Student Exploration Stoichiometry

Student Exploration: Unlocking the Secrets of Stoichiometry

Stoichiometry. The word itself can send shivers down the spines of many students. But it doesn't have to be a monster lurking in the chemistry textbook. This comprehensive guide will demystify stoichiometry, providing you with the tools and understanding to master this crucial concept. We'll explore the fundamentals, offer practical examples, and provide strategies for tackling even the most challenging stoichiometry problems. Get ready to unlock the secrets of stoichiometry and transform your chemistry grades!

What is Stoichiometry? Understanding the Basics

Stoichiometry, at its core, is the study of the quantitative relationships between reactants and products in a chemical reaction. It's essentially the language chemists use to describe how much of each substance is involved in a reaction. This involves understanding and applying concepts like:

Moles: The fundamental unit in stoichiometry, representing a specific number of particles (6.022 x 10²³, Avogadro's number).
Molar Mass: The mass of one mole of a substance, found by adding up the atomic masses of its constituent elements.
Balanced Chemical Equations: Equations that show the correct ratios of reactants and products involved in a reaction, ensuring conservation of mass.
Mole Ratios: The ratios between the coefficients of reactants and products in a balanced chemical equation, which are crucial for stoichiometric calculations.

Understanding these core concepts is the key to unlocking the power of stoichiometry.

Mastering Mole Conversions: The Foundation of Stoichiometry

Before tackling complex stoichiometry problems, mastering mole conversions is paramount. This involves converting between grams, moles, and the number of particles. Here's a breakdown:

Grams to Moles: Divide the mass (in grams) by the molar mass (g/mol).
Moles to Grams: Multiply the number of moles by the molar mass (g/mol).
Moles to Particles: Multiply the number of moles by Avogadro's number (6.022 x 10²³).
Particles to Moles: Divide the number of particles by Avogadro's number.

Practice these conversions diligently; they form the bedrock of all stoichiometric calculations.

Solving Stoichiometry Problems: A Step-by-Step Guide

Let's tackle a typical stoichiometry problem. Imagine we want to determine how many grams of water (H₂O) are produced when 10 grams of hydrogen (H₂) react completely with oxygen (O₂).

1. Write and balance the chemical equation: 2H₂ + O₂ → 2H₂O

2. Convert grams of reactant to moles: Using the molar mass of H₂ (2 g/mol), we find 10g H₂ / 2 g/mol = 5 moles H₂.

3. Use mole ratios from the balanced equation: The mole ratio of H₂ to H₂O is 2:2 (or 1:1). Therefore, we have 5 moles H₂O produced.

4. Convert moles of product to grams: Using the molar mass of H₂O (18 g/mol), we find 5 moles H₂O x 18 g/mol = 90 grams H₂O.

Therefore, 90 grams of water are produced.

Beyond the Basics: Limiting Reactants and Percent Yield

Stoichiometry extends beyond simple calculations. Understanding limiting reactants and percent yield is crucial for real-world applications.

#### Limiting Reactants: In many reactions, one reactant is completely consumed before others. This is the limiting reactant, which dictates the maximum amount of product that can be formed.

#### Percent Yield: The actual yield of a reaction is often less than the theoretical yield (calculated stoichiometrically). Percent yield accounts for this discrepancy: (Actual Yield / Theoretical Yield) x 100%.

Tips and Tricks for Stoichiometry Success

Practice, Practice, Practice: The more problems you solve, the more confident you'll become.
Organize your work: Use a clear and systematic approach to avoid errors.
Check your units: Ensure your units are consistent throughout your calculations.
Use dimensional analysis: This method helps track units and ensures correct conversions.

Conclusion

Stoichiometry, while initially daunting, is a powerful tool for understanding chemical reactions. By mastering the fundamental concepts, practicing diligently, and utilizing the strategies outlined in this guide, you can conquer stoichiometry and unlock a deeper appreciation for the quantitative nature of chemistry.

FAQs

1. What is the difference between a mole and a molecule? A mole is a unit of measurement representing a specific number of particles (Avogadro's number), while a molecule is a group of atoms bonded together. A mole can contain many molecules.

2. How do I identify the limiting reactant in a problem? Calculate the moles of product that can be formed from each reactant. The reactant that produces the least amount of product is the limiting reactant.

3. Why is percent yield often less than 100%? Several factors contribute to lower-than-expected yields, including incomplete reactions, side reactions, and loss of product during purification.

4. Can stoichiometry be used in other areas besides chemistry? While primarily used in chemistry, stoichiometric principles find applications in other fields, such as materials science and engineering, where precise ratios of components are crucial.

5. Where can I find more practice problems? Numerous online resources and textbooks offer a wealth of stoichiometry practice problems. Look for resources tailored to your specific chemistry curriculum.

Student Exploration: Stoichiometry – Mastering the Mole Ratios

Stoichiometry. The word itself might sound intimidating, conjuring images of complex equations and confusing calculations. But the truth is, stoichiometry is a fundamental concept in chemistry that, once understood, unlocks a world of problem-solving capabilities. This comprehensive guide offers a student-friendly exploration of stoichiometry, breaking down the key principles, providing practical examples, and empowering you to conquer this essential aspect of chemistry. We'll move beyond rote memorization and delve into the practical application of stoichiometric calculations, leaving you confident in tackling even the most challenging problems.

What is Stoichiometry?

Stoichiometry, at its core, is the study of the quantitative relationships between reactants and products in a chemical reaction. It’s all about the ratios – specifically, the mole ratios – involved in chemical transformations. Understanding these ratios allows us to predict the amount of product formed from a given amount of reactant, or conversely, the amount of reactant needed to produce a specific amount of product. Think of it as a recipe for chemical reactions, where the mole ratios are the precise measurements needed for success.

Understanding Moles and Molar Mass:

Before diving into the intricacies of stoichiometric calculations, it's crucial to solidify your understanding of two fundamental concepts: moles and molar mass.

Moles: A mole (mol) is simply a unit of measurement representing a specific number of particles (atoms, molecules, ions). This number, known as Avogadro's number, is approximately 6.022 x 10²³. Think of it like a dozen (12) but on a much larger scale, appropriate for the vast quantities of atoms and molecules involved in chemical reactions.

Molar Mass: The molar mass of a substance is the mass of one mole of that substance, expressed in grams per mole (g/mol). You can find the molar mass of an element on the periodic table, and for compounds, you calculate it by adding up the molar masses of all the constituent atoms.

Balancing Chemical Equations: The Foundation of Stoichiometry

Before performing any stoichiometric calculations, you must have a correctly balanced chemical equation. This equation represents the reactants and products involved in a chemical reaction and ensures that the number of atoms of each element is conserved. Balancing equations is a crucial skill that requires practice and careful attention to detail. For example:

2H₂ + O₂ → 2H₂O

This equation shows that two molecules of hydrogen (H₂) react with one molecule of oxygen (O₂) to produce two molecules of water (H₂O).

Mole Ratios and Stoichiometric Calculations:

The coefficients in a balanced chemical equation provide the mole ratios between reactants and products. These ratios are the key to solving stoichiometry problems. For instance, in the above equation, the mole ratio of H₂ to H₂O is 2:2 (or simplified, 1:1), and the mole ratio of O₂ to H₂O is 1:2.

These ratios are used as conversion factors in stoichiometric calculations. For example, if we want to determine how many moles of water are produced from 3 moles of hydrogen, we would use the mole ratio:

(3 moles H₂) x (2 moles H₂O / 2 moles H₂) = 3 moles H₂O

Types of Stoichiometry Problems:

Several types of stoichiometry problems exist, including:

Mass-mass stoichiometry: Converting the mass of one substance to the mass of another substance in a reaction.

Mass-mole stoichiometry: Converting the mass of one substance to the moles of another substance.

Mole-mole stoichiometry: Converting the moles of one substance to the moles of another substance.

Limiting Reactant Problems: Identifying the reactant that limits the amount of product formed.

Percent Yield Calculations: Determining the efficiency of a chemical reaction.

Limiting Reactants:

In many real-world scenarios, one reactant is completely consumed before others. This reactant is known as the limiting reactant, as it limits the amount of product that can be formed. Identifying the limiting reactant requires comparing the mole ratios of reactants to the actual amounts present.

Percent Yield:

The percent yield compares the actual yield (the amount of product obtained in a lab experiment) to the theoretical yield (the amount of product predicted by stoichiometric calculations). It provides a measure of the reaction's efficiency.

Conclusion:

Mastering stoichiometry is a significant step in developing a strong foundation in chemistry. By understanding moles, molar mass, balanced chemical equations, and mole ratios, you can confidently tackle a wide range of stoichiometric calculations and delve deeper into the quantitative relationships within chemical reactions. Practice is key – the more problems you solve, the more comfortable and proficient you'll become.

FAQs:

1. What are some common mistakes students make in stoichiometry? Common errors include forgetting to balance equations, incorrectly using mole ratios, and failing to identify the limiting reactant.

2. How can I improve my skills in balancing chemical equations? Practice regularly with various examples, and utilize online resources and tutorials for extra help.

3. Are there any online tools or calculators to help with stoichiometry problems? Yes, many online stoichiometry calculators and interactive tutorials are available.

4. How does stoichiometry relate to real-world applications? Stoichiometry is essential in various fields, including industrial chemistry, pharmaceuticals, and environmental science, for optimizing reaction yields, controlling pollution, and designing new materials.

5. What are some advanced topics related to stoichiometry? Advanced topics include solution stoichiometry (dealing with concentrations), gas stoichiometry (considering gas laws), and thermochemistry (connecting stoichiometry with energy changes).

student exploration stoichiometry: Chemistry Education Javier García-Martínez, Elena Serrano-Torregrosa, 2015-02-17 Winner of the CHOICE Outstanding Academic Title 2017 Award This comprehensive collection of top-level contributions provides a thorough review of the vibrant field of chemistry education. Highly-experienced chemistry professors and education experts cover the latest developments in chemistry learning and teaching, as well as the pivotal role of chemistry for shaping a more sustainable future. Adopting a practice-oriented approach, the current challenges and opportunities posed by chemistry education are critically discussed, highlighting the pitfalls that can occur in teaching chemistry and how to circumvent them. The main topics discussed include best practices, project-based education, blended learning and the role of technology, including e-learning, and science visualization. Hands-on recommendations on how to optimally implement innovative strategies of teaching chemistry at university and high-school levels make this book an essential resource for anybody interested in either teaching or learning chemistry more effectively, from experience chemistry professors to secondary school teachers, from educators with no formal training in didactics to frustrated chemistry students.
student exploration stoichiometry: Optimizing STEM Education With Advanced ICTs and Simulations Levin, Ilya, Tsybulsky, Dina, 2017-06-05 The role of technology in educational settings has become increasingly prominent in recent years. When utilized effectively, these tools provide a higher quality of learning for students. Optimizing STEM Education With Advanced ICTs and Simulations is an innovative reference source for the latest scholarly research on the integration of digital tools for enhanced STEM-based learning environments. Highlighting a range of pivotal topics such as mobile games, virtual labs, and participatory simulations, this publication is ideally designed for educators, professionals, academics, and students seeking material on emerging educational technologies.
student exploration stoichiometry: Integrating Digital Technology in Education R. Martin Reardon, Jack Leonard, 2019-05-01 This fourth volume in the Current Perspectives on School/University/Community Research series brings together the perspectives of authors who are deeply committed to the integration of digital technology with teaching and learning. Authors were invited to discuss either a completed project, a work-in-progress, or a theoretical approach which aligned with one of the trends highlighted by the New Media Consortium’s NMC/CoSN Horizon Report: 2017 K-12 Edition, or to consider how the confluence of interest and action (Thompson, Martinez, Clinton, & Díaz, 2017) among school-university-community collaborative partners in the digital technology in education space resulted in improved outcomes for all—where “all” is broadly conceived and consists of the primary beneficiaries (the students) as well as the providers of the educational opportunities and various subsets of the community in which the integrative endeavors are enacted. The chapters in this volume are grouped into four sections: Section 1 includes two chapters that focus on computational thinking/coding in the arts (music and visual arts); Section 2 includes three chapters that focus on the instructor in the classroom, preservice teacher preparation, and pedagogy; Section 3 includes four chapters that focus on building the academic proficiency of students; and Section 4 includes two chapters that focus on the design and benefits of school-university-community collaboration.
student exploration stoichiometry: Problems and Problem Solving in Chemistry Education Georgios Tsaparlis, 2021-05-17 Problem solving is central to the teaching and learning of chemistry at secondary, tertiary and post-tertiary levels of education, opening to students and professional chemists alike a whole new world for analysing data, looking for patterns and making deductions. As an important higher-order thinking skill, problem solving also constitutes a major research field in science education. Relevant education research is an ongoing process, with recent developments occurring not only in the area of quantitative/computational problems, but also in qualitative problem solving. The following situations are considered, some general, others with a focus on specific areas of chemistry: quantitative problems, qualitative reasoning, metacognition and resource activation, deconstructing the problem-solving process, an overview of the working memory hypothesis, reasoning with the electron-pushing formalism, scaffolding organic synthesis skills, spectroscopy for structural characterization in organic chemistry, enzyme kinetics, problem solving in the academic chemistry laboratory, chemistry problem-solving in context, team-based/active learning, technology for molecular representations, IR spectra simulation, and computational quantum chemistry tools. The book concludes with methodological and epistemological issues in problem solving research and other perspectives in problem solving in chemistry. With a foreword by George Bodner.
student exploration stoichiometry: Formulation and Stoichiometry Emil J. Margolis, 2012-12-06 The purpose of this book is to interpret more sensitively some of the offerings of the standard text book of general chemistry. As a supplement thereto, it covers various aspects of formulation and stoichiometry that are frequently treated far too perfunctorily or, in many instances, are not considered at all. The inadequate attention often accorded by the comprehensive text to many topics within its proper purview arises, understandably enough, from the numerous broad and highly varied objectives set for the first year of the curriculum for modern chemistry in colleges and universities. For the serious student this means, more often than not, the frustrations of questions unanswered. The amplification that this book proffers in the immediate area of its subject covers the equations representing internal redox reactions, not only of the simple but, also, of the multiple disproportionations of which the complexities often discourage an undertaking despite the challenge they offer: distinctions to be observed in the balancing of equations in con trasting alkali-basic and ammonia-basic reaction media; quantitative contributions made by the ionization or dissociation effects of electrolytes to the colligative properties of their solutions; intensive application of the universal reaction principle of chemical equivalence to the stoichiometry of oxidation and reduction.
student exploration stoichiometry: Teaching Chemistry in Higher Education Michael Seery, Claire Mc Donnell, 2019-07-01 Teaching Chemistry in Higher Education celebrates the contributions of Professor Tina Overton to the scholarship and practice of teaching and learning in chemistry education. Leading educators in United Kingdom, Ireland, and Australia—three countries where Tina has had enormous impact and influence—have contributed chapters on innovative approaches that are well-established in their own practice. Each chapter introduces the key education literature underpinning the approach being described. Rationales are discussed in the context of attributes and learning outcomes desirable in modern chemistry curricula. True to Tina’s personal philosophy, chapters offer pragmatic and useful guidance on the implementation of innovative teaching approaches, drawing from the authors’ experience of their own practice and evaluations of their implementation. Each chapter also offers key guidance points for implementation in readers’ own settings so as to maximise their adaptability. Chapters are supplemented with further reading and supplementary materials on the book’s website (overtonfestschrift.wordpress.com). Chapter topics include innovative approaches in facilitating group work, problem solving, context- and problem-based learning, embedding transferable skills, and laboratory education—all themes relating to the scholarly interests of Professor Tina Overton. About the Editors: Michael Seery is Professor of Chemistry Education at the University of Edinburgh, and is Editor of Chemistry Education Research and Practice. Claire Mc Donnell is Assistant Head of School of Chemical and Pharmaceutical Sciences at Technological University Dublin. Cover Art: Christopher Armstrong, University of Hull
student exploration stoichiometry: Chemistry Education Javier García-Martínez, Elena Serrano-Torregrosa, 2015-05-04 Winner of the CHOICE Outstanding Academic Title 2017 Award This comprehensive collection of top-level contributions provides a thorough review of the vibrant field of chemistry education. Highly-experienced chemistry professors and education experts cover the latest developments in chemistry learning and teaching, as well as the pivotal role of chemistry for shaping a more sustainable future. Adopting a practice-oriented approach, the current challenges and opportunities posed by chemistry education are critically discussed, highlighting the pitfalls that can occur in teaching chemistry and how to circumvent them. The main topics discussed include best practices, project-based education, blended learning and the role of technology, including e-learning, and science visualization. Hands-on recommendations on how to optimally implement innovative strategies of teaching chemistry at university and high-school levels make this book an essential resource for anybody interested in either teaching or learning chemistry more effectively, from experience chemistry professors to secondary school teachers, from educators with no formal training in didactics to frustrated chemistry students.
student exploration stoichiometry: Chemistry 2e Paul Flowers, Richard Langely, William R. Robinson, Klaus Hellmut Theopold, 2019-02-14 Chemistry 2e is designed to meet the scope and sequence requirements of the two-semester general chemistry course. The textbook provides an important opportunity for students to learn the core concepts of chemistry and understand how those concepts apply to their lives and the world around them. The book also includes a number of innovative features, including interactive exercises and real-world applications, designed to enhance student learning. The second edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Substantial improvements have been made in the figures, illustrations, and example exercises that support the text narrative. Changes made in Chemistry 2e are described in the preface to help instructors transition to the second edition.
student exploration stoichiometry: Writing and Learning in the Science Classroom Carolyn S. Wallace, Brian B. Hand, Vaughan Prain, 2004-03-31 This volume is of interest to science educators, graduate students, and classroom teachers. The book will also be an important addition to any scholarly library focusing on science education, science literacy, and writing. This book is unique in that it synthesizes the research of the three leading researchers in the field of writing to learn science: Carolyn S. Wallace, Brian Hand, and Vaughan Prain. It includes a comprehensive review of salient literature in the field, detailed reports of the authors' own research studies, and current and future issues on writing in science. The book is the first to definitely answer the question, Does writing improve science learning?. Further, it provides evidence for some of the mechanisms through which learning occurs. It combines both theory and practice in a unique way. Although primarily a tool for research, classroom teachers will also find many practical suggestions for using writing in the science classroom.
student exploration stoichiometry: Study Guide 1 DCCCD Staff, Dcccd, 1995-11
student exploration stoichiometry: Directory of Distance Learning Opportunities Modoc Press, Inc., 2003-02-28 This book provides an overview of current K-12 courses and programs offered in the United States as correspondence study, or via such electronic delivery systems as satellite, cable, or the Internet. The Directory includes over 6,000 courses offered by 154 institutions or distance learning consortium members. Following an introduction that describes existing practices and delivery methods, the Directory offers three indexes: • Subject Index of Courses Offered, by Level • Course Level Index • Geographic Index All information was supplied by the institutions. Entries include current contact information, a description of the institution and the courses offered, grade level and admission information, tuition and fee information, enrollment periods, delivery information, equipment requirements, credit and grading information, library services, and accreditation.
student exploration stoichiometry: It's Just Math Marcy H. Towns, Kinsey Bain, Jon-Marc G. Rodriguez, 2020-06 At the interface between chemistry and mathematics, this book brings together research on the use mathematics in the context of undergraduate chemistry courses. These university-level studies also support national efforts expressed in the Next Generation Science Standards regarding the importance of skills, such as quantitative reasoning and interpreting data. Curated by award-winning leaders in the field, this book is useful for instructors in chemistry, mathematics, and physics at the secondary and university levels.
student exploration stoichiometry: The Case of the Frozen Addicts J.W. Langston, J. Palfreman, 2013-12-02 In the summer of 1982, hospital emergency rooms in the San Francisco Bay Area were suddenly confronted with mysteriously “frozen” patients – young men and women who, though conscious, could neither move nor speak. Doctors were baffled, until neurologist J. William Langston, recognizing the symptoms of advanced Parkinson’s disease, administered L-dopa – the only known effective treatment – and “unfroze” his patient. Dr. Langston determined that this patient and five others had all used the same tainted batch of synthetic heroin, inadvertently laced with a toxin that had destroyed an area of their brains essential to normal movement. This same area, the substantia nigra, slowly deteriorates in Parkinson’s disease. As scientists raced to capitalize on this breakthrough, Dr. Langston struggled to salvage the lives of his frozen patients, for whom L-dopa provided only short-term relief. The solution he found lay in the most daring area of research: fetal-tissue transplants. The astonishing recovery of two of his patients garnered worldwide press coverage, helped overturn federal restrictions on fetal-tissue research, and offered hope to millions suffering from Parkinson’s, Alzheimer’s, and other degenerative brain disorders. This is the story behind the headline – a spellbinding account that brings to life the intellectual excitement, ethical dilemmas, and fierce competitiveness of medical research. This new updated edition of the classic neurological mystery tale, “The Case of the Frozen Addicts,” illuminates how the solution to a baffling mystery of the brain’s chemistry opened a new frontier in medicine and restored life to people without hope. “It begins with a series of quixotic discoveries, escalates to providing possible solutions for one of humanity’s most intractable medical problems, and then catapults the reader into the center of America’s hottest political arena – abortion and fetal sanctity. Bravo! A brilliant read.” – Laurie Garrett, author of The Coming Plague “[Langston and Palfreman] weave a highly readable and spellbinding medical detective tale... It is as absorbing as a good mystery, as entertaining as an exciting novel, and as enlightening as a good biography.” – Stanley Fahn, New England Journal of Medicine “I could not put it down... it is the lives of the ‘frozen addicts’ themselves – and the fullness with which this is presented – which makes the whole thing overwhelming.” – Oliver Sacks
student exploration stoichiometry: The Software Encyclopedia 2000 Bowker Editorial Staff, 2000-05
student exploration stoichiometry: Resources in Education , 1998
student exploration stoichiometry: Geochemistry William M. White, 2013-01-22 This book provides a comprehensive introduction to the field of geochemistry. The book first lays out the ‘geochemical toolbox’: the basic principles and techniques of modern geochemistry, beginning with a review of thermodynamics and kinetics as they apply to the Earth and its environs. These basic concepts are then applied to understanding processes in aqueous systems and the behavior of trace elements in magmatic systems. Subsequent chapters introduce radiogenic and stable isotope geochemistry and illustrate their application to such diverse topics as determining geologic time, ancient climates, and the diets of prehistoric peoples. The focus then broadens to the formation of the solar system, the Earth, and the elements themselves. Then the composition of the Earth itself becomes the topic, examining the composition of the core, the mantle, and the crust and exploring how this structure originated. A final chapter covers organic chemistry, including the origin of fossil fuels and the carbon cycle’s role in controlling Earth’s climate, both in the geologic past and the rapidly changing present. Geochemistry is essential reading for all earth science students, as well as for researchers and applied scientists who require an introduction to the essential theory of geochemistry, and a survey of its applications in the earth and environmental sciences. Additional resources can be found at: www.wiley.com/go/white/geochemistry
student exploration stoichiometry: Secrets to Success for Science Teachers Ellen Kottler, Victoria Brookhart Costa, 2015-10-27 This easy-to-read guide provides new and seasoned teachers with practical ideas, strategies, and insights to help address essential topics in effective science teaching, including emphasizing inquiry, building literacy, implementing technology, using a wide variety of science resources, and maintaining student safety.
student exploration stoichiometry: Digital Learning and Teaching in Chemistry Yehudit Dori, Courtney Ngai, Gabriela Szteinberg, 2023-07-12 Education is always evolving, and most recently has shifted to increased online or remote learning. Digital Learning and Teaching in Chemistry compiles the established and emerging trends in this field, specifically within the context of learning and teaching in chemistry. This book shares insights about five major themes: best practices for teaching and learning digitally, digital learning platforms, virtual visualisation and laboratory to promote learning in science, digital assessment, and building communities of learners and educators. The authors are chemistry instructors and researchers from nine countries, contributing an international perspective on digital learning and teaching in chemistry. While the chapters in this book span a wide variety of topics, as a whole, they focus on using technology and digital platforms as a method for supporting inclusive and meaningful learning. The best practices and recommendations shared by the authors are highly relevant for modern chemistry education, as teaching and learning through digital methods is likely to persist. Furthermore, teaching chemistry digitally has the potential to bring greater equity to the field of chemistry education in terms of who has access to quality learning, and this book will contribute to that goal. This book will be essential reading for those working in chemical education and teaching. Yehudit Judy Dori is internationally recognised, formerly Dean of the Faculty of Education of Science and Technology at the Technion Israel Institute of Technology and won the 2020 NARST Distinguished Contributions to Science Education through Research Award–DCRA for her exceptional research contributions. Courtney Ngai and Gabriela Szteinberg are passionate researchers and practitioners in the education field. Courtney Ngai is the Associate Director of the Office of Undergraduate Research and Artistry at Colorado State University. Gabriela Szteinberg serves as Assistant Dean and Academic Coordinator for the College of Arts and Sciences at Washington University in St. Louis.
student exploration stoichiometry: Teaching Chemistry – A Studybook Ingo Eilks, Avi Hofstein, 2013-04-20 This book focuses on developing and updating prospective and practicing chemistry teachers’ pedagogical content knowledge. The 11 chapters of the book discuss the most essential theories from general and science education, and in the second part of each of the chapters apply the theory to examples from the chemistry classroom. Key sentences, tasks for self-assessment, and suggestions for further reading are also included. The book is focused on many different issues a teacher of chemistry is concerned with. The chapters provide contemporary discussions of the chemistry curriculum, objectives and assessment, motivation, learning difficulties, linguistic issues, practical work, student active pedagogies, ICT, informal learning, continuous professional development, and teaching chemistry in developing environments. This book, with contributions from many of the world’s top experts in chemistry education, is a major publication offering something that has not previously been available. Within this single volume, chemistry teachers, teacher educators, and prospective teachers will find information and advice relating to key issues in teaching (such as the curriculum, assessment and so forth), but contextualised in terms of the specifics of teaching and learning of chemistry, and drawing upon the extensive research in the field. Moreover, the book is written in a scholarly style with extensive citations to the literature, thus providing an excellent starting point for teachers and research students undertaking scholarly studies in chemistry education; whilst, at the same time, offering insight and practical advice to support the planning of effective chemistry teaching. This book should be considered essential reading for those preparing for chemistry teaching, and will be an important addition to the libraries of all concerned with chemical education. Dr Keith S. Taber (University of Cambridge; Editor: Chemistry Education Research and Practice) The highly regarded collection of authors in this book fills a critical void by providing an essential resource for teachers of chemistry to enhance pedagogical content knowledge for teaching modern chemistry. Through clever orchestration of examples and theory, and with carefully framed guiding questions, the book equips teachers to act on the relevance of essential chemistry knowledge to navigate such challenges as context, motivation to learn, thinking, activity, language, assessment, and maintaining professional expertise. If you are a secondary or post-secondary teacher of chemistry, this book will quickly become a favorite well-thumbed resource! Professor Hannah Sevian (University of Massachusetts Boston)
student exploration stoichiometry: Learning With Artificial Worlds Harvey Mellar, Joan Bliss, Richard Boohan, Jon Ogborn, Chris Tompsett, 2014-06-03 First Published in 1994. This book is about modelling in education. It is about providing children with computer tools to enable them to create their own worlds, to express their own representations of their world, and also to explore other people's representations - learning with artificial worlds. This title is best suited for the classroom teacher who has used some modelling, and now wishes to seriously consider the role of modelling within their curriculum.
student exploration stoichiometry: Misconceptions in Chemistry Hans-Dieter Barke, Al Hazari, Sileshi Yitbarek, 2008-11-18 Over the last decades several researchers discovered that children, pupils and even young adults develop their own understanding of how nature really works. These pre-concepts concerning combustion, gases or conservation of mass are brought into lectures and teachers have to diagnose and to reflect on them for better instruction. In addition, there are ‘school-made misconceptions’ concerning equilibrium, acid-base or redox reactions which originate from inappropriate curriculum and instruction materials. The primary goal of this monograph is to help teachers at universities, colleges and schools to diagnose and ‘cure’ the pre-concepts. In case of the school-made misconceptions it will help to prevent them from the very beginning through reflective teaching. The volume includes detailed descriptions of class-room experiments and structural models to cure and to prevent these misconceptions.
student exploration stoichiometry: Principles and Applications of Hydrochemistry Erik Eriksson, 2012-12-06 The International Hydrological Decade (which ended in 1975) led to a revival of hydrological sciences to a degree which, seen in retrospect, is quite spectacular. This research programme had strong government support, no doubt due to an increased awareness of the role of water for prosperous development. Since water quality is an essential ingredient in almost all water use, there was also a considerable interest in hydrochemistry during the Decade. As many concepts in classical hydrology had to be revised during and after the Decade there was also a need for revising hydrochemistry to align it with modern hydrology. A considerable input of fresh knowledge was also made in the recent past by chemists, particularly geochemists, invaluable for understanding the processes of mineralization of natural waters. With all this in mind it seems natural to try to assemble all the present knowledge of hydrochemistry into a book and integrate it with modern hydrology as far as possible, emphasizing the dynamic features of dissolved substances in natural waters. Considering the role of water in nature for transfer of substances, this integration is essential for proper understanding of processes in all related earth sciences. The arrangement of subjects in the book is as follows. After a short introductory chapter comes a chapter on elementary chemical principles of particular use in hydrochemistry.
student exploration stoichiometry: Teaching Science for Understanding James J. Gallagher, James Joseph Gallagher, 2007 Offers middle and high school science teachers practical advice on how they can teach their students key concepts while building their understanding of the subject through various levels of learning activities.
student exploration stoichiometry: Oxidizing and Reducing Agents Steven D. Burke, Rick L. Danheiser, 1999-07-09 Oxidizing and Reducing Agents S. D. Burke University of Wisconsin at Madison, USA R. L. Danheiser Massachusetts Institute of Technology, Cambridge, USA Recognising the critical need for bringing a handy reference work that deals with the most popular reagents in synthesis to the laboratory of practising organic chemists, the Editors of the acclaimed Encyclopedia of Reagents for Organic Synthesis (EROS) have selected the most important and useful reagents employed in contemporary organic synthesis. Handbook of Reagents for Organic Synthesis: Oxidizing and Reducing Agents, provides the synthetic chemist with a convenient compendium of information concentrating on the most important and frequently employed reagents for the oxidation and reduction of organic compounds, extracted and updated from EROS. The inclusion of a bibliography of reviews and monographs, a compilation of Organic Syntheses procedures with tested experimental details and references to oxidizing and reducing agents will ensure that this handbook is both comprehensive and convenient.
student exploration stoichiometry: What Successful Science Teachers Do Neal A. Glasgow, Michele Cheyne, Randy K. Yerrick, 2010-09-20 This easy-to-use guide features 75 research-based strategies for teachers of students in Grades K–12. Engage your students' creativity and build their science literacy.
student exploration stoichiometry: Handbook of Research Design in Mathematics and Science Education Anthony Edward Kelly, Richard A. Lesh, 2012-10-12 The Handbook of Research Design in Mathematics and Science Education is based on results from an NSF-supported project (REC 9450510) aimed at clarifying the nature of principles that govern the effective use of emerging new research designs in mathematics and science education. A primary goal is to describe several of the most important types of research designs that: * have been pioneered recently by mathematics and science educators; * have distinctive characteristics when they are used in projects that focus on mathematics and science education; and * have proven to be especially productive for investigating the kinds of complex, interacting, and adapting systems that underlie the development of mathematics or science students and teachers, or for the development, dissemination, and implementation of innovative programs of mathematics or science instruction. The volume emphasizes research designs that are intended to radically increase the relevance of research to practice, often by involving practitioners in the identification and formulation of the problems to be addressed or in other key roles in the research process. Examples of such research designs include teaching experiments, clinical interviews, analyses of videotapes, action research studies, ethnographic observations, software development studies (or curricula development studies, more generally), and computer modeling studies. This book's second goal is to begin discussions about the nature of appropriate and productive criteria for assessing (and increasing) the quality of research proposals, projects, or publications that are based on the preceding kind of research designs. A final objective is to describe such guidelines in forms that will be useful to graduate students and others who are novices to the fields of mathematics or science education research. The NSF-supported project from which this book developed involved a series of mini conferences in which leading researchers in mathematics and science education developed detailed specifications for the book, and planned and revised chapters to be included. Chapters were also field tested and revised during a series of doctoral research seminars that were sponsored by the University of Wisconsin's OERI-supported National Center for Improving Student Learning and Achievement in Mathematics and Science. In these seminars, computer-based videoconferencing and www-based discussion groups were used to create interactions in which authors of potential chapters served as guest discussion leaders responding to questions and comments from doctoral students and faculty members representing more than a dozen leading research universities throughout the USA and abroad. A Web site with additional resource materials related to this book can be found at http://www.soe.purdue.edu/smsc/lesh/ This internet site includes directions for enrolling in seminars, participating in ongoing discussion groups, and submitting or downloading resources which range from videotapes and transcripts, to assessment instruments or theory-based software, to publications or data samples related to the research designs being discussed.
student exploration stoichiometry: Science for Secondary Schools Indiana. Department of Public Instruction, 1963
student exploration stoichiometry: Monthly Catalog of United States Government Publications , 2000-02
student exploration stoichiometry: Monthly Catalog, United States Public Documents United States. Superintendent of Documents, 1973 February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
student exploration stoichiometry: Fundamentals of Rocket Propulsion DP Mishra, 2017-07-20 The book follows a unified approach to present the basic principles of rocket propulsion in concise and lucid form. This textbook comprises of ten chapters ranging from brief introduction and elements of rocket propulsion, aerothermodynamics to solid, liquid and hybrid propellant rocket engines with chapter on electrical propulsion. Worked out examples are also provided at the end of chapter for understanding uncertainty analysis. This book is designed and developed as an introductory text on the fundamental aspects of rocket propulsion for both undergraduate and graduate students. It is also aimed towards practicing engineers in the field of space engineering. This comprehensive guide also provides adequate problems for audience to understand intricate aspects of rocket propulsion enabling them to design and develop rocket engines for peaceful purposes.
student exploration stoichiometry: Chemistry 2e Paul Flowers, Klaus Theopold, Richard Langley, Edward J. Neth, WIlliam R. Robinson, 2019-02-14 Chemistry 2e is designed to meet the scope and sequence requirements of the two-semester general chemistry course. The textbook provides an important opportunity for students to learn the core concepts of chemistry and understand how those concepts apply to their lives and the world around them. The book also includes a number of innovative features, including interactive exercises and real-world applications, designed to enhance student learning. The second edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Substantial improvements have been made in the figures, illustrations, and example exercises that support the text narrative. Changes made in Chemistry 2e are described in the preface to help instructors transition to the second edition.
student exploration stoichiometry: Chemical Engineering Design Gavin Towler, Ray Sinnott, 2012-01-25 Chemical Engineering Design, Second Edition, deals with the application of chemical engineering principles to the design of chemical processes and equipment. Revised throughout, this edition has been specifically developed for the U.S. market. It provides the latest US codes and standards, including API, ASME and ISA design codes and ANSI standards. It contains new discussions of conceptual plant design, flowsheet development, and revamp design; extended coverage of capital cost estimation, process costing, and economics; and new chapters on equipment selection, reactor design, and solids handling processes. A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data, and Excel spreadsheet calculations, plus over 150 Patent References for downloading from the companion website. Extensive instructor resources, including 1170 lecture slides and a fully worked solutions manual are available to adopting instructors. This text is designed for chemical and biochemical engineering students (senior undergraduate year, plus appropriate for capstone design courses where taken, plus graduates) and lecturers/tutors, and professionals in industry (chemical process, biochemical, pharmaceutical, petrochemical sectors). New to this edition: - Revised organization into Part I: Process Design, and Part II: Plant Design. The broad themes of Part I are flowsheet development, economic analysis, safety and environmental impact and optimization. Part II contains chapters on equipment design and selection that can be used as supplements to a lecture course or as essential references for students or practicing engineers working on design projects. - New discussion of conceptual plant design, flowsheet development and revamp design - Significantly increased coverage of capital cost estimation, process costing and economics - New chapters on equipment selection, reactor design and solids handling processes - New sections on fermentation, adsorption, membrane separations, ion exchange and chromatography - Increased coverage of batch processing, food, pharmaceutical and biological processes - All equipment chapters in Part II revised and updated with current information - Updated throughout for latest US codes and standards, including API, ASME and ISA design codes and ANSI standards - Additional worked examples and homework problems - The most complete and up to date coverage of equipment selection - 108 realistic commercial design projects from diverse industries - A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data and Excel spreadsheet calculations plus over 150 Patent References, for downloading from the companion website - Extensive instructor resources: 1170 lecture slides plus fully worked solutions manual available to adopting instructors
student exploration stoichiometry: Middle East Technical University, Ankara, Turkey Unesco, 1967
student exploration stoichiometry: The Selected Papers of Sir John Meurig Thomas John Meurig Thomas, 2017-07-07 John Meurig Thomas is a former Director of the Royal Institution of Great Britain, a former head of the Department of Physical Chemistry and former Master of Peterhouse, University of Cambridge. A world-renowned solid-state, materials and surface chemist, he has been an educator, researcher, academic administrator, author of university texts, government advisor, industrial consultant and trustee of national museums in a career spanning over 50 years. Recipient of many international awards, including the Linus Pauling, Willard–Gibbs, Kapitza, Natta, Stokes, Davy and Faraday medals, he is also a fellow of the Royal Society (1977), of the American Philosophical Society (1993) and of ten other national academies. He is best known for his fundamental work in heterogeneous catalysis, chemical electron microscopy and in the popularisation of science, for which, in conjunction with his services to chemistry, he was knighted (1991). He is also founding editor of three scientific journals and editor or co-editor of some 30 monographs. A new mineral, meurigite, was named in his honour (1995). Most recently in 2016, Sir John was awarded the Royal Medal for Physical Sciences by the Royal Society. Drawn from over 1200 publications, this volume contains a summarised account of Sir John's work, with a selection of the new techniques pioneered and discovered by him and his colleagues. Also included are popular science articles, and various illustrations of techniques which have enhanced our knowledge of many facets of condensed matter science. Contributions from 80 peers, colleagues, former co-workers, students and friends worldwide who have interacted with or been influenced by him are a tribute to the professional and personal life of Sir John, making this book a unique reflective summary of the work of one of the greatest achievers in modern British physical science.
student exploration stoichiometry: Essentials of Introductory Chemistry Russo Steve Silver Michael, Steve Russo, 2001-12 Introductory Chemistry, Third Edition helps readers master the quantitative skills and conceptual understanding they need to gain a deep understanding of chemistry. Unlike other books on the market that emphasize rote memory of problem-solving algorithms, Introductory Chemistry takes a conceptual approach with the idea that focusing on the concepts behind chemical equations helps readers become more proficient problem solvers. What Is Chemistry?, The Numerical Side of Chemistry, The Evolution of Atomic Theory, The Modern Model of the Atom 1, Chemical Bonding and Nomenclature, The Shape of Molecules, Chemical Reactions, Stoichiometry and the Mole, The Transfer of Electrons from One Atom to Another in a Chemical Reaction Intermolecular Forces and the Phases of Matter, What If There Were No Intermolecular Forces?, The Ideal Gas Solutions, When Reactants Turn into Products, Chemical Equilibrium, Electrolytes, Acids, and Bases. For all readers interested in introductory chemistry.
student exploration stoichiometry: The Sourcebook for Teaching Science, Grades 6-12 Norman Herr, 2008-08-11 The Sourcebook for Teaching Science is a unique, comprehensive resource designed to give middle and high school science teachers a wealth of information that will enhance any science curriculum. Filled with innovative tools, dynamic activities, and practical lesson plans that are grounded in theory, research, and national standards, the book offers both new and experienced science teachers powerful strategies and original ideas that will enhance the teaching of physics, chemistry, biology, and the earth and space sciences.
student exploration stoichiometry: Index Medicus , 2001-06 Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
student exploration stoichiometry: American Doctoral Dissertations , 1999
student exploration stoichiometry: Chemical Engineering Education , 1969
student exploration stoichiometry: Forty Studies that Changed Psychology Roger R. Hock, 2005 1. Biology and Human Behavior. One Brain or Two, Gazzaniga, M.S. (1967). The split brain in man. More Experience = Bigger Brain? Rosenzweig, M.R., Bennett, E.L. & Diamond M.C. (1972). Brain changes in response to experience. Are You a Natural? Bouchard, T., Lykken, D., McGue, M., Segal N., & Tellegen, A. (1990). Sources of human psychological difference: The Minnesota study of twins raised apart. Watch Out for the Visual Cliff! Gibson, E.J., & Walk, R.D. (1960). The visual cliff. 2. Perception and Consciousness. What You See Is What You've Learned. Turnbull C.M. (1961). Some observations regarding the experience and behavior of the BaMuti Pygmies. To Sleep, No Doubt to Dream... Aserinsky, E. & Kleitman, N. (1953). Regularly occurring periods of eye mobility and concomitant phenomena during sleep. Dement W. (1960). The effect of dream deprivation. Unromancing the Dream... Hobson, J.A. & McCarley, R.W. (1977). The brain as a dream-state generator: An activation-synthesis hypothesis of the dream process. Acting as if You Are Hypnotized Spanos, N.P. (1982). Hypnotic behavior: A cognitive, social, psychological perspective. 3. Learning and Conditioning. It's Not Just about Salivating Dogs! Pavlov, I.P.(1927). Conditioned reflexes. Little Emotional Albert. Watson J.B. & Rayner, R. (1920). Conditioned emotional responses. Knock Wood. Skinner, B.F. (1948). Superstition in the pigeon. See Aggression...Do Aggression! Bandura, A., Ross, D. & Ross, S.A. (1961). Transmission of aggression through imitation of aggressive models. 4. Intelligence, Cognition, and Memory. What You Expect Is What You Get. Rosenthal, R. & Jacobson, L. (1966). Teacher's expectancies: Determinates of pupils' IQ gains. Just How are You Intelligent? H. Gardner, H. (1983). Frames of mind: The theory of multiple intelligences. Maps in Your Mind. Tolman, E.C. (1948). Cognitive maps in rats and men. Thanks for the Memories. Loftus, E.F. (1975). Leading questions and the eyewitness report. 5. Human Development. Discovering Love. Harlow, H.F.(1958). The nature of love. Out of Sight, but Not Out of Mind. Piaget, J. (1954). The construction of reality in the child: The development of object concept. How Moral are You? Kohlberg, L.., (1963). The development of children's orientations toward a moral order: Sequence in the development of moral thought. In Control and Glad of It! Langer, E.J. & Rodin, J. (1976). The effects of choice and enhanced responsibility for the aged: A field experiment in an institutional setting. 6. Emotion and Motivation. A Sexual Motivation... Masters, W.H. & Johnson, V.E. (1966). Human sexual response. I Can See It All Over Your Face! Ekman, P. & Friesen, V.W. (1971). Constants across cultures in the face and emotion. Life, Change, and Stress. Holmes, T.H. & Rahe, R.H. (1967). The Social Readjustment Rating Scale. Thoughts Out of Tune. Festinger, L. & Carlsmith, J.M. (1959). Cognitive consequences of forced compliance. 7. Personality. Are You the Master of Your Fate? Rotter, J.B. (1966). Generalized expectancies for internal versus external control of reinforcement. Masculine or Feminine or Both? Bem, S.L. (1974). The measurement of psychological androgyny. Racing Against Your Heart. Friedman, M. & Rosenman, R.H. (1959). Association of specific overt behavior pattern with blood and cardiovascular findings. The One; The Many..., Triandis, H., Bontempo, R., Villareal, M., Asai, M. & Lucca, N. (1988). Individualism and collectivism: Cross-cultural perspectives on self-ingroup relationships. 8. Psychopathology. Who's Crazy Here, Anyway? Rosenhan, D.L. (1973). On Being sane in insane places. Learning to Be Depressed. Seligman, M.E.P., & Maier, S.F. (1967). Failure to escape traumatic shock. You're Getting Defensive Again! Freud, A. (1946). The ego and mechanisms of defense. Crowding into the Behavioral Sink. Calhoun, J.B. (1962). Population density and social pathology. 9. Psychotherapy. Choosing Your Psychotherapist. Smith, M.L. & Glass, G.V. (1977). Meta-analysis of psychotherapy outcome studies. Relaxing Your Fears Away. Wolpe, J. (1961). The systematic desensitization of neuroses. Projections of Who You Are. Rorschach, H. (1942). Psychodiagnostics: A diagnostic test based on perception. Picture This! Murray, H.A. (1938). Explorations in personality. 10. Social Psychology. Not Practicing What You Preach. LaPiere, R.T. (1934). Attitudes and actions. The Power of Conformity. Asch, S.E. (1955). Opinions and social pressure. To Help or Not to Help. Darley, J.M. & Latané, B. (1968). Bystander intervention in emergencies: Diffusion of responsibility. Obey at Any Cost. Milgram, S. (1963). Behavioral study of obedience.
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