Penny Lab Answers

Penny Lab Answers: A Comprehensive Guide to Understanding the Results

Are you staring at your tarnished pennies after completing a science experiment, utterly bewildered by the results? Or perhaps you're frantically searching for "penny lab answers" online because a deadline looms? Don't worry, you've come to the right place! This comprehensive guide will not only provide you with answers to common penny lab experiments but will also explain the underlying scientific principles involved, helping you truly understand the process rather than just memorizing results. We'll delve into various methods, interpreting observations, and troubleshooting common issues – ensuring you master your penny lab experiment.

Understanding Common Penny Lab Experiments

Penny lab experiments are popular science demonstrations that typically focus on chemical reactions or physical changes observed on copper pennies. The most common experiments involve cleaning or tarnishing pennies, revealing interesting properties of copper and its reactions with various substances. Let's examine the most frequent types:

#### 1. Cleaning Tarnished Pennies: The Vinegar and Salt Method

This classic experiment uses the acidic nature of vinegar (acetic acid) and the oxidizing power of salt (sodium chloride) to remove the copper oxide layer (tarnish) from pennies. The chemical reaction involves the acid dissolving the tarnish, leaving behind shiny copper. This demonstrates oxidation and reduction reactions.

Expected Results: Tarnished pennies should become significantly brighter and shinier. Some discoloration may remain, depending on the degree of tarnish and reaction time.

Possible Errors: Insufficient cleaning may indicate insufficient reaction time or insufficient quantities of vinegar and salt. Over-cleaning can potentially damage the penny's surface.

#### 2. The Penny and Baking Soda Experiment

This experiment often explores the reaction between a base (baking soda – sodium bicarbonate) and an acid (vinegar or other acidic solutions) to remove tarnish. The base neutralizes the acid, helping to lift the tarnish. This provides a contrasting approach to the vinegar and salt method, highlighting different chemical interactions.

Expected Results: Similar to the vinegar and salt method, tarnished pennies should become cleaner, though the outcome might differ slightly in terms of shine and potential residue.

Possible Errors: Incomplete cleaning might be due to insufficient reaction time or concentration of the base.


#### 3. Penny Oxidation and Reduction: Creating a "Rainbow" of Colors

Some experiments aim to create a variety of colors on the penny's surface by cycling it through different chemical solutions, demonstrating oxidation and reduction processes repeatedly. This visually striking experiment helps to understand how different chemical environments alter the copper's surface.


Expected Results: A sequence of color changes, from dull copper to various shades of brown, green, and even blue or purple, may be observed depending on the specific chemicals used.

Possible Errors: Inconsistent color changes may result from variations in chemical concentrations, temperature, or reaction times.

Interpreting Your Penny Lab Results

Accurate interpretation relies on careful observation and recording. Note the initial condition of the pennies (level of tarnish), the time spent in each solution, and any changes in color, texture, or shine. Taking photographs before and after each step can prove invaluable. If the results deviate from expectations, revisit your procedure to identify possible errors.

Troubleshooting Common Problems in Penny Lab Experiments

Pennies don't clean effectively: Ensure sufficient reaction time, correct concentrations of chemicals, and thoroughly rinse the pennies. Extremely tarnished pennies might require longer reaction times or more aggressive cleaning techniques.

Unexpected color changes: Variations in the color changes may be due to impurities in the chemicals, inconsistencies in temperature, or the presence of contaminants on the pennies' surface. Repeat the experiment with fresh materials for more reliable results.

Conclusion

Penny lab experiments offer a hands-on and engaging way to understand fundamental chemistry principles like oxidation, reduction, and chemical reactions. By carefully following procedures, accurately recording observations, and understanding the underlying science, you can successfully complete your experiment and gain valuable insights into the fascinating world of chemistry. Remember, even seemingly simple experiments can provide enriching learning experiences, and understanding the "penny lab answers" isn't just about the end result—it's about the journey of scientific discovery.

Frequently Asked Questions (FAQs)

1. Can I use any type of vinegar for the penny lab? While white vinegar (acetic acid) is commonly used, other types of vinegar may work, but the reaction rate and effectiveness might vary due to differing acid concentrations.

2. Are the chemicals used in penny labs harmful? The chemicals used (vinegar, salt, baking soda) are generally safe when handled responsibly. Always wear appropriate safety glasses and gloves, and conduct the experiment in a well-ventilated area.

3. What if my pennies don't become completely shiny? This is common. The degree of cleaning depends on the initial tarnish level and the reaction time. Repeat the experiment with longer immersion times or a stronger chemical solution (with caution).

4. Can I reuse the solutions from my penny lab experiment? It is not recommended. The solutions may be contaminated and could affect the results of subsequent experiments. Always use fresh chemicals for optimal results.

5. Where can I find more information on penny lab experiments? Numerous websites, educational resources, and science textbooks offer detailed instructions and explanations of various penny lab experiments. Consult reliable sources for additional information and variations.


  penny lab answers: 1500 Science Test Questions/Answers Dennis A. Hooker, 1500 Science Test Questions w/ Keys, Answers, Statistical Analysis For Science Teachers - Upper Elementary to College - Dr. Hooker researched and developed a book of 1500 Science Test Questions - together with the Bloom's Taxonomy, Discrimination Index, the Key, etc. The book was funded through the National Science Foundation for teachers of Upper Middle School through College Science Programs. 1500 Science Test Questions is an excellent tool for teachers to develop their own tests - and for students to study for High School and College proficiency exams.
  penny lab answers: Instructor's Guide for Introductory Chemistry in the Laboratory James F. Hall, 1996
  penny lab answers: Integrated Science Laboratory Manual Michael J. Padilla, 2000 Includes 74 investigations, pre-lab discussions and critical thinking questions, safety manual and student safety test, teaching support.
  penny lab answers: Inexpensive Science Experiments Pam Walker, Elaine Wood, 2000 Not all science teachers have ready access to the equipment and materials they need to perform many of the experiments they would like to assign. If you are one of those teachers, you can stretch those science budget dollars with the labs included in Inexpensive Science Experiments. Gathering needed materials is quick, easy, and inexpensive, and many of the experiments are even cost free! Instructions are clear and concise with each lab accompanied by a teacher information page highlighting the objectives, the approximate time required for completion, teaching strategies, and an evaluation rubric. Each student lab includes a background page, pre-lab questions, a procedure page, and a set of post-lab questions.
  penny lab answers: 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.
  penny lab answers: Maneuvers with Nickels and Numbers, Grades 5-9 David A. Page, Kathryn Chval, Philip Wagreich, 1993 Supplementary math instruction with computer-based, problem-solving material.
  penny lab answers: Te HS&T 2007 Shrt Crs M Holt Rinehart & Winston, 2007
  penny lab answers: Challenging Units for Gifted Learners Kenneth J. Smith, 2021-09-03 Gifted students have the potential to learn material earlier and faster, to handle more abstraction, and to solve complex problems better. This potential, however, needs stimulating experiences from home and school or it will not unfold. These books are designed to help teachers provide the engaging curricula that will nurture this potential in school. The Science book includes a medical simulation in which teams of students work as doctors to diagnose patients' cases, a food science project in which students use a variety of information-gathering techniques to learn how nutrition impacts performance, a hands-on study of human memory and expertise, and a study of the physics of sports. Grades 6-8
  penny lab answers: Objective Proficiency Workbook with Answers with Audio CD Peter Sunderland, Erica Whettem, 2013-02-28 Objective Proficiency Second edition provides Official Exam Preparation for Cambridge C2 Proficiency. Everything you need to be confident for exam day. A variety of challenging, lively topics provide thorough training in exam skills and high-level language development. Each unit contains three double-page lessons ensuring flexibility, even pacing and progress. This motivating material is also suitable for high-level students keen to improve their general English. The Workbook with answers provides opportunities for further practice of new language and exam skills either at home or in the classroom. The CD contains the audio material for the Workbook listening tasks.
  penny lab answers: Take-Home Chemistry Michael Horton, 2011 For high school science teachers, homeschoolers, science coordinators, and informal science educators, this collection of 50 inquiry-based labs provides hands-on ways for students to learn science at home safely. Author Michael Horton promises that students who conduct the labs in Take-Home Chemistry as supplements to classroom instruction will enhance higher-level thinking, improve process skills, and raise high-stakes test scores.
  penny lab answers: Essential Laboratory Mathematics Catherine W. Johnson, Daniel L. Timmons, Pamela E. Hall, 2009-12-03 This hands-on manual, with pedagogical features that draw the learner into the content, offers clear and complete coverage of the mathematical topics most often used in today’s clinical and medical laboratories. Furthermore, it provides a solid foundation for subsequent courses in the laboratory sciences. The first two chapters present a review of basic mathematical concepts. The remainder of the book provides students with a realistic means to build on previously learned concepts— both mathematical and scientific—to refine their mathematical skills, and to gauge their mastery of those skills. Outstanding features . . . • Each chapter opens with an outline, objectives, and key terms. • Key terms, highlighted within the text, are listed and defined in the glossary. • “Margin problems” and practice problem sets provide the chance to gain immediate proficiency. • Laboratory exercises and review problems allow students to apply what they’ve learned and assess their understanding and progress. • A special calculator icon signals explanations of calculator use for a particular mathematical function. • Study hints—“Keys to Success”—offer practical suggestions and guidance for maximizing achievement. • The workbook design enables users to solve problems and take notes directly on the pages.
  penny lab answers: Prentice Hall Exploring Life Science Anthea Maton, 1997
  penny lab answers: Practical Physics Labs Peter Goodwin, 1990 Get students into the swing of physics - without busting your budget! 45 step-by-step, real-world investigations use affordable alternatives to specialized equipment. Topics range from mass of air and bicycle acceleration to radioactive decay and retrograde motion. Complete with reproducible student handouts, teacher notes, and quizzes.
  penny lab answers: Proceedings of the Section on Statistical Education American Statistical Association. Section on Statistical Education, 1993 Papers presented at the annual meeting of the American Statistical Association.
  penny lab answers: California Science , 2008 Science stimulates curiosity and student inquiry, integrates powerful support for reading and science literacy, reaches all learners through numerous components and strategies for differentiated instruction, reinforces learning through exciting visuals and electronic components, and makes teaching science easy with a variety of teacher resources.
  penny lab answers: Great Source Test Achiever 편집부, 2005-05-09 - Test-taking practice with a complete Pretest and Posttest and 30 Practice Tests in reading, language arts, and mathematics- Questions similar in content and format to those found on standardized test- Instructional guidelines for teachers based on grade-level curricula in reading, language arts, and mathematics- Tips for a variety of test-taking situations to help students prepare for tests on their own- A cost-effective option for preparing your students to succeed on standardized tests
  penny lab answers: Hounds of the Underworld Dan Rabarts, Lee Murray, 2017-07-26 On the verge of losing her laboratory, her savings, and all respect for herself, Pandora (Penny) Yee lands her first contract as scientific consult to the police department. And with seventeen murder cases on the go, the surly inspector is happy to leave her to it. Only she’s going to need to get around, and that means her slightly unhinged adopted brother, Matiu, will be doing the driving. But something about the case spooks Matiu, something other than the lack of a body in the congealing pool of blood in the locked room or that odd little bowl. Matiu doesn’t like anything about this case, from the voices that screamed at him when he touched that bowl, to the way his hateful imaginary friend Makere has come back to torment him, to the fact that the victim seems to be tied up with a man from Matiu’s past, a man who takes pleasure in watching dogs tear each other to pieces for profit and entertainment. Hounds of the Underworld blends mystery, near-future noir and horror. Set in New Zealand it’s the product of a collaboration by two Kiwi authors, one with Chinese heritage and the other Māori. This debut book in The Path of Ra series offers compelling new voices and an exotic perspective on the detective drama.
  penny lab answers: INNOCENT WITNESS Leona Karr, 2014-10-15 A child's only hope Little Penny Drake had witnessed a murder and would no longer speak. Only Dr. Steve Sherman could help bring the child out her shell. Seeing her daughter respond to the psychologist brought tears to Deanna Drake's eyes—and warmth to a place in her heart that had been cold for a long, long time. Steve never mixed business with pleasure, but the beautiful, elusive Deanna breached his defenses and roused the man behind the professional mask. Somewhere out there, a killer watched mother and child—and Steve vowed that to get to them, the killer would have to go through him first!
  penny lab answers: Phy. Lab and Pocket Lab Wk/Sheets Phy:P&P Zitzewitz, 1998-07
  penny lab answers: Different Minds Karen LaMantia, 2008-08-08 Union is not the biggest planet in the galaxy and is pretty much empty before the arrival of Project Noah on the Arc. What’s a planet to do, with all the new species vying for time and space? Find out what’s up on the new world as: War between microorganisms and humans seems eminent until the real origin of our species is revealed. Problems we face require the input of the different minds of many species to find live-giving solutions. People recall how to play the Game of Life to populate the new planet. Humans learn from their dolphin cousins and consult the planetary bio-computer for information and advice. The Four Directions pay a visit to give guidance to all. The new world order is Have Fun and Be Kind!
  penny lab answers: Benny's Pennies Pat Brisson, 1995-07 Benny sets off in the morning with five shiny new pennies to spend and eventually buys something for his mother, brother, sister, dog, and cat.
  penny lab answers: Popular Science , 1965-08 Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.
  penny lab answers: Addison-Wesley Introduction to Physical Science Michael B. Leyden, 1988
  penny lab answers: Even More Brain-powered Science Thomas O'Brien, 2011 The third of Thomas OOCOBrienOCOs books designed for 5OCo12 grade science teachers, Even More Brain-Powered Science uses questions and inquiry-oriented discrepant eventsOCoexperiments or demonstrations in which the outcomes are not what students expectOCoto dispute misconceptions and challenge students to think about, discuss, and examine the real outcomes of the experiments. OOCOBrien has developed interactive activitiesOComany of which use inexpensive materialsOCoto engage the natural curiosity of both teachers and students and create new levels of scientific understanding.
  penny lab answers: Black Carbon - Vol 2 A.J. Scudiere, 2024-05-13 The apocalypse is now! Stay quiet. Don’t leave tracks. Don’t ask the wrong questions… The Mazur twins have built a new family from the wreckage of a rapidly changing world. For all that they’ve survived, no one can predict how things will come at them next. THE SWARM – When their tour guide slaps at a bug then drops dead, Cage and Joule will have to figure out why… before they are next. THE TAKEN – Cage and Joule are back in the fray when their best friend is reported missing. Is Sarah even still alive? Humans may be the worst disaster yet. THE NIGHT - When Joule saw the shadows, she knew: the Night Hunters were back. But you can’t escape the enemy you can’t identify. This box set contains 3 full novels from USA Today Bestselling Author A.J. Scudiere. Stay quiet. Follow the tracks. Fight back. Dive into the battle with the twins and the new family they’ve built. Will you survive?
  penny lab answers: Teaching Science in Diverse Classrooms Douglas B. Larkin, 2019-08-29 As a distinctive voice in science education writing, Douglas Larkin provides a fresh perspective for science teachers who work to make real science accessible to all K-12 students. Through compelling anecdotes and vignettes, this book draws deeply on research to present a vision of successful and inspiring science teaching that builds upon the prior knowledge, experiences, and interests of students. With empathy for the challenges faced by contemporary science teachers, Teaching Science in Diverse Classrooms encourages teachers to embrace the intellectual task of engaging their students in learning science, and offers an abundance of examples of what high-quality science teaching for all students looks like. Divided into three sections, this book is a connected set of chapters around the central idea that the decisions made by good science teachers help light the way for their students along both familiar and unfamiliar pathways to understanding. The book addresses topics and issues that occur in the daily lives and career arcs of science teachers such as: • Aiming for culturally relevant science teaching • Eliciting and working with students’ ideas • Introducing discussion and debate • Reshaping school science with scientific practices • Viewing science teachers as science learners Grounded in the Next Generation Science Standards (NGSS), this is a perfect supplementary resource for both preservice and inservice teachers and teacher educators that addresses the intellectual challenges of teaching science in contemporary classrooms and models how to enact effective, reform
  penny lab answers: Only Until I Need Glasses: The Extraordinary Life and Adventures of Jimmy DeAngelo James T. Scarnati, 2018-03-08 Somewhere in every person’s life is a little Jimmy DeAngelo. Only Until I Need Glasses is a coming-of-age novel that transcends generations. It’s the story of Jimmy DeAngelo, a typical boy growing up in the 1950s whose basic human nature is often at odds with the expectations of family and church. But boys will be boys, and Jimmy’s inner conflict makes his life a continuous and hilarious adventure. He struggles with challenges on his road to adulthood and tests the accepted boundaries, providing a plethora of belly laughs in a society where rules, regulations, and morality are everything. In the years between WWII and Vietnam, follow Jimmy and his friends as they navigate first grade and first kisses, college pranks and career choices. Laugh with our hero as he attempts to reconcile the inner discord created by embedded church and family values, and take a refreshing look into the minds of boys. Only Until I Need Glasses is an entertaining and uplifting book about love, friendship, and the process of finding one’s place in a rapidly changing world.
  penny lab answers: Zombie World Dennis Sayan, 2015-12-22 The hilarious yet chilling account of the recent Zombie invasion of the United States and Mexico. Unable to guard itself the U.S. watches helplessly as its citizens are eaten, power plants, oil refineries and water supplies destroyed. In a moment of sobriety the President of the U.S. pleads with Laserman for his help. Fortunately Laserman accepts the challenge and proposes a devious yet ingenious plan to save planet earth, Zombie World. Terrifying deserted cities where captured Zombies prowl darkened buildings and lurk in wretched alleyways as heavily armed humans stalk them. The spectacular hunts are a rage and telecast live across the U.S. Then something goes terribly wrong.
  penny lab answers: The Continent of St. Louis J. L. Reynolds, 2009-07-15 The Search For Answers is the second novel and continuingstory in 'The Continent Of St. Louis' series, where a startled and confused, Vince Davis finds himself back in 2005, confined to a mental institution for telling his story and experiences of the worlds destruction in 2009. In a hostile world where no one believes him, he will have to face new challenges and adversaries in an effort to prove his sanity and sort out how he came to be, back in 2005.
  penny lab answers: Penny from Heaven Jennifer L. Holm, 2007-12-26 Newbery Honor–winning, New York Times–bestselling, and as full of fun and adventure as it is of deeper family issues. School’s out for summer, and Penny and her cousin Frankie have big plans to eat lots of butter pecan ice cream, swim at the local pool, and cheer on their favorite baseball team—the Brooklyn Dodgers! But sometimes things don’t go according to plan. Penny’s mom doesn’t want her to swim because she’s afraid Penny will get polio. Frankie is constantly getting into trouble, and Penny feels caught between the two sides of her family. But even if the summer doesn’t exactly start as planned . . . things can work out in the most unexpected ways! Set just after World War II, this thought-provoking novel also highlights the prejudice Penny’s Italian American family must confront because people of Italian descent were “the enemy” not long ago. Inspired by three-time Newbery Honor winner Jennifer Holm’s own Italian American family, Penny from Heaven is a story about families—about the things that tear them apart and the things that bring them back together. Includes an author’s note with photographs and background on World War II, internment camps, and 1950s America, as well as additional resources and websites. Booklist: “Holm impressively wraps pathos with comedy in this coming-of-age story, populated by a cast of vivid characters.”
  penny lab answers: Duncan and Prasse's Veterinary Laboratory Medicine Kenneth S. Latimer, 2011-07-26 Now in full color throughout, Duncan and Prasse’s Veterinary Laboratory Medicine: Clinical Pathology, Fifth Edition offers a comprehensive overview of hematology, hemostasis, clinical chemistry, urinalysis, cytology, and reference intervals in a highly accessible outline format. With information on all major domestic species, the text is designed for the reader to quickly find answers to clinical questions. Taking a problem-solving approach to the interpretation of laboratory data, this book includes clinical cases to illustrate the concepts of laboratory data interpretation, with tables and key words to aid readers in locating and applying information. The fifth edition has been fully revised to reflect the latest knowledge, diagnostic methods, and practices in veterinary laboratory medicine. A companion website provides the images in PowerPoint and references linked to PubMed at www.wiley.com/go/latimer. Duncan and Prasse’s Veterinary Laboratory Medicine is an excellent quick reference for practicing veterinarians, veterinary students, clinical interns and residents, and pathology residents.
  penny lab answers: Trial of Miss Madeleine H. Smith ... for the alleged poisoning of M. Pierre Émile L'Angelier, at Glasgow. Special verbatim report, with portraits and plans, etc Madeleine Hamilton SMITH, 1857
  penny lab answers: Quests John M. Brewer, 2016-11-04 Joe Stallings has woman trouble. Stacey, his pathologically controlling, unfaithful ex-wife, is stalking him. She wants revenge and is hurling threats. At the same time, hes trying to finish his PhD in applied genetics by analyzing an ancient skull, one of forty or fifty gleaned from a cave near Lovelock, Nevada. Joe is determined to find out where the giant man came from and when he lived by researching the DNA. He joins forces with Penny Echeverria, assistant director of the Winnemucca Museum, to determine the ethnicity. As they work together, they fall in love. However, Penny harbors a terrible secret from her past that threatens their bond. With just two goals in mindearning his PhD and settling down and starting his own familyJoe journeys through lifes challenges and joys. He gets involved with his boss, Hope, at his day job; shes in a bad relationship with her boyfriend. In addition, Joe must fend off an attacker intent on killing him.
  penny lab answers: Deadly Woods Ii David Close, 2018-07-06 It all began with a dead body, naked and hanging from a tree in the woods, and continues with unprovoked animal attacks in a nearby golf course. What follows has the town residents living in fear of a deadly terror.
  penny lab answers: Australian National Bibliography , 1978
  penny lab answers: Holt Science and Technology Holt Rinehart & Winston, 2004
  penny lab answers: The Literary World , 1885
  penny lab answers: Pearson Chemistry 12 New South Wales Skills and Assessment Book Penny Commons, 2018-10-15 The write-in Skills and Assessment Activity Books focus on working scientifically skills and assessment. They are designed to consolidate concepts learnt in class. Students are also provided with regular opportunities for reflection and self-evaluation throughout the book.
  penny lab answers: Bridges to Algebra and Geometry , 2004
  penny lab answers: Government Employee Relations Report , 1998
Surface Tension: Liquids Stick Together - Stanford University
In this lab you will learn about properties of liquids, specifically cohesion, adhesion, and surface tension. These principles will be demonstrated by adding drops of different liquids to pennies …

PENNY DROP LAB - Licking Heights Local School District
PENNY DROP LAB EXPERIMENTAL QUESTION: Which side of a penny will hold more water? MATERIALS: Penny, dropper bottle with water, paper towel PROCEDURE: 1. Observe penny …

Penny Lab Answers - netsec.csuci.edu
Don't worry, you've come to the right place! This comprehensive guide will not only provide you with answers to common penny lab experiments but will also explain the underlying scientific …

Nuclear Chemistry - Stockton Unified School District
Feb 1, 2018 · Reasoning including answers to sufficient scientific principles. Half-Life of a Penny Activity One characteristic of radioactive material is that radioactive isotopes spontaneously …

Water Drops on a Penny - Flinn Sci
Why do water droplets bead when dropped on a waxy surface? Why can some insects walk on water? These observations can be attributed to the high surface tension of water. Surface …

Drops on a Penny Lab - mrtorresgeneralscience.weebly.com


Lab- Penny Lever


Penny-Ante Equilibrium Lab Activity - Mrs. Nielsen Science


Penny Density Lab - Mrs. Dieker's Chemistry Class


Half-Life of a Penny Lab Activity - smithchem.weebly.com


The Need for Speed—A Look at Enzyme Activity - Chino …
1. Spread 30 pennies on one side of your lab table. The pennies represent the substrate and your hand will represent the enzyme. 2. One team member will attempt to pick up as many pennies …

The Scientific Method - Edward M. Kennedy Academy for …
Apr 30, 2013 · 1. After collecting the students’ papers, review the correct answers with the class. 2. Pass out the student activity pages for the Penny Lab. Students should read the instructions …

Turning Copper Pennies into “Silver” and “Gold”! SCIENTIFIC
In this reaction, a penny is placed in a boiling solution of 1 M zinc chloride containing granular zinc. The penny develops a zinc “silver-colored” coating. When removed from the solution and …

Intermolecular Forces Lab Worksheet - Answer Key
Since the hydrogen and oxygen atoms in the water molecule carry opposite (partial) charges, nearby water molecules are attracted to each other. The attraction between the δ+ hydrogen …

Half-Life of a Penny LAB - Mr. Macha's Class Website


The Hollow Penny - Flinn Sci
Instead of making hollow pennies, copper foils with penny imprints are the result. • This activity works well as an open-ended, inquiry-based activity. Do not tell students before the lab what to …

SECTION: Lab: Comparing the Density of Pennies
SECTION: Lab: Comparing the Density of Pennies . Occasionally the US Department of Treasury changes the composition of pennies, which changes the overall mass and density of each …

Finding the Atomic Mass of the Pennium Isotope Lab #5
Finding the Atomic Mass of the Pennium Isotope Lab #5 Pre-Lab discussion: One result of the Mass of US Pennies lab is the discovery that pennies are an isotope with two nuclides. This …

8.87 g/mL 7.19 g/mL EQUIPMENT and MATERIALS: PRE
PURPOSE: The purpose of this lab is to determine the densities of pre-1982 and post-1982 pennies. EQUIPMENT and MATERIALS: Electronic Balance, Pennies (10 pre-1982 and 10 …

Gold Penny Lab - PC\|MAC
6. Remove the penny from the dish with tongs and drop into water. When cool, wipe the penny clean with a cloth to remove excess zinc. 7. Using tongs, hold the penny in the flame of a Bunsen burner and gently heat. The penny should turn "gold" (brass). (Do not overheat the penny.) Do not heat for too long or your gold penny will bend and deform. 8.

DENSITY OF PENNIES LAB REPORT GUIDE - Hazleton Area …
DENSITY OF PENNIES LAB REPORT GUIDE: WEDS. OCT. 3rd General Reminders: Use complete sentences. Avoid scribbles and sloppiness. Spelling and grammar count! (5pts) Cover page: Must include title of lab, your name, date, and class period. (6pts) Purpose: The purpose of this lab can be found at the end of the Introduction paragraph on your lab handout.

Chemical Reactions of Copper and Percent Yield
CHEMISTRY - NCHS Lab: Reactions of Copper and Percent Yield Page 1 of 8 . The objective in this experiment is to recover all of the copper you begin with in analytically pure form. This is the test of your laboratory skills. The percent yield of the copper can be expressed as the ratio of the recovered weight to initial weight, ...

The Scientific Method
3. Turn in the Penny Lab write-up to your teacher after completing it. 4. Do the Scientific Method Practice 2 activity for homework. Be ready to turn in the write-up at the beginning of the next period. Day 3 1. Turn in Scientific Method Practice 2 to your teacher at the beginning of class. Your teacher will review the correct answers.

Bring a penny to class for this lab! The Preparation of “Gold”
7. Have your teacher use tongs to remove the penny. CAUTION: the penny will be very hot. Carefully dip the penny into a beaker of distilled water. Shine with towel. The penny should now appear silver. 8. Using tongs, heat the penny directly on the hot plate until the penny turns gold. Immediately dip the penny into a fresh beaker of distilled ...

Laboratory: Intermolecular Forces (IMF) - Parkland
NOT have to write a formal lab report. You should write your answers into a word processing program and save the file. Go into the Lab-IMF Report and cut and ... With a dropper, penny and cup of water, count how many drops of water can fit on the penny. Remember to aim for even drops, close to the penny but don’t let

Alchemy: Can you turn a penny into gold? - Mr. Tremblay's …
In this lab, you will be converting a regular penny into a “gold” penny! In doing so, you are following a tradition that dates back to the earliest days of chemistry. Before people knew much about atomic structure and bonding, there was a group of pseudo-scientists called Alchemists. They mixed chemicals in an attempt to create new substances.

Electroplating Lab - UC Davis
Electroplating Lab CHEM 401 . 1 . Electroplating Lab . Objective . In this lab you will be electroplating zinc onto a penny, copper onto a nickel, and calculating the number of moles of each metal deposited onto the coins. Background . Electroplating . Electroplating involves the deposition of a metal onto an object composed of a different metal.

“Polygenics Penny Lab” - Grosse Pointe Public Schools
“Polygenics Penny Lab” Experimental Questions: Why do some traits appear in nearly endless varieties? Introduction: Polygenic traits are traits that are controlled by more than one gene, i.e. height, weight, hair color, skin color. If these traits were controlled by Mendelian Inheritance humans would only show two heights, a tall

Penny Lab Chemistry Answers (PDF) - netsec.csuci.edu
"penny lab chemistry answers." Understanding the Composition of a Penny Before we delve into the chemistry of the penny lab, let's establish a foundation by understanding what a penny is actually made of. Pre-1982 pennies were composed primarily of 95% copper. However, due to fluctuating copper prices, the composition changed.

How Much Water Can Fit on a Penny - Bowling Green State …
2. Examine the penny and consider how many water drops you think will fit on the penny. Write down your guess. 3. Place the penny on a flat surface that can get wet, such as a kitchen counter. 4. Fill a small glass or bowl with water. 5. Use a pipette to draw water and carefully put individual drops of water onto the penny.

Tracy Trimpe - Science Spot
Drops on a Penny Lab – Students conduct tests to see how many drops of water can fit onto a penny. Discussion Questions: 1 – What variables were involved? Size of drops Soap vs. No Soap Heads vs. Tails New Penny vs. Old Penny 2 – What was the control group? 3 – What were the independent and dependent variables? 4 - Were your results ...

Penny Density Lab 2014 - Mrs. Nielsen Science
Penny Density Lab An Inquiry Lab PURPOSE • Students will use the density formula (D= m/v) to determine the density of different metals. ... in the Data Processing section of your lab notebook. 3. Design a procedure to determine the density of pre-1982 and post-1983 pennies using the graphing method.

Lab - Percent Composition
Using the tin-snips, cut 3 evenly spaced notches on the edge of the penny exposing the zinc wafer inside. 3) Find the mass of the penny to the nearest 0.01 g. 4) Place the penny in a clean 100 mL beaker. If more than one person is doing the lab, be sure to mark your beaker

13 - Penny Genetics - Chandler Unified School District
have two pennies. On one side of each penny is the letter T. On the other side is the letter t. Each penny represents a parent that has the genotype Tt. One partner is going to play the role of the female, and the other will play the role of the male. When the coin is flipped, you are determining what sperm or what egg is being donated to the ...

“Polygenics Penny Lab” - Grosse Pointe Public Schools
“Polygenics Penny Lab” Experimental Questions: Why do some traits appear in nearly endless varieties? Introduction: Polygenic traits are traits that are controlled by more than one gene, i.e. height, weight, hair color, skin color. If these traits were controlled by Mendelian Inheritance humans would only show two heights, a tall

Radioactivity and Half-lives Lab - Kwanga.net
1) Flip a penny 100 times. 2) Record in your data table the total number of heads that result. 3) In trial 2, flip the penny the same number of times that you had heads in trial 1. 4) Record the resulting number of heads. 5) In trial 3, flip the penny the same number of times as you had heads in trial 2. 6) Continue until you obtain no more heads.

Penny Buoyancy Lab (Discovery) AP Physics 2 Fluids - NJCTL
Penny Buoyancy Lab (Discovery) AP Physics 2 – Fluids Name_____ Date_____ Period_____ All answers and data must follow the PSI Lab Report Format. Objective Identify which of three different liquids is water by identifying the liquid’s density. …

Properties of Water Lab: AP Biology Lab 1 ʼ - Ms. Ryman's …
this portion of the lab, you will test these three properties and apply them to the concept of capillary action. Procedure: Obtain two pennies, 2 pipettes, and a beaker of tap water and some paper towel. You will also need your solution of salt water made in part one. Use your pipette to drop tap water onto a penny, one drop at a time. Count ...

Lab Half life of Pennium - Martin High School
Part D Concept overview: Fill in the missing radioactive particle and place the proper decay symbol over the arrow. 1. 31 69Ga o 31 69Ga + 2. 31 69Ga o 29 65Cu + 3. 31

HASPI Medical Chemistry Lab 1a Discovering Isotopes of …
Lab 1a, Page 4 HASPI Medical Chemistry Unit 1: Atoms Be careful to ensure students don’t open up the baggies and change the number of pennies in each one. This will change all of their data as well as data for future groups using that sample. Feel free to staple the top shut if you think students will peek… but add the mass of the staple to ...

Radiometric Dating Lab - Rutgers University
1. Start with 100 pennies. Each penny represents an atom in the radioactive element Carbon-14. 2. Dump out all of the pennies and spread them out on the table. 3. Remove all the coins that show tails to the side. These are atoms that have “decayed” and are no longer radioactive. 4. Record the number of pennies with heads in the table below.

Lab # 1
2. Use ruler to measure diameter of penny. Divide diameter in ½ to find radius of penny. 3. Plug values from steps 1 & 2 into the formula for volume of a cylinder. 4. Use scale to measure the mass of your pennies. 5. Use values from steps 3 & 4 to calculate the density of a penny. PROCEDURE II (Displacement): 1.

Polarity-Hydrogen Bonding Lab - Weebly
In this lab we will investigate the number of water droplets that can stick together on the surface of a penny. Please read all materials and procedures before creating your hypothesis and running your experiment. Materials per group: -1 penny -1 pipette -1 beaker -water -paper towel Procedures: 1. Place the penny on top of the paper towel.

Penny Lab Answer Key - netsec.csuci.edu
break down the different variations of the penny lab, explaining the science behind the changes you observe and providing tips for analyzing your findings effectively. Understanding the Penny Lab Experiment The "penny lab" isn't a single, standardized experiment; it encompasses a variety of activities that investigate chemical

Experiment: Investigating the Physical Properties of US Penny …
Transfer the wet pennies onto a folded paper towel on your lab bench and dry each penny completely. Use extra paper towel. 7. Now sort the pennies by their mint year. Older pennies tend to look darker and more reddish brown. Newer pennies should look shinny and less reddish. Place your old and new pennies into separate dry

Turning Copper into Silver into Gold
Lab Time 1. Clean any dirty-looking pennies a. Put some salt in a small jar. Add enough distilled white vinegar to dissolve the salt. b. Drop in pennies. It is best if they do not touch each other, so that the entire surface of the penny is free to contact the salt solution. c. Let sit for a few minutes while you prepare the next step. 2. Make ...

Lab: A Penny’s Worth of Zinc - drgchemistry.weebly.com
4. Lay penny on a paper towel to get the majority of water off of the penny. 5. Put your name on the paper towel and place it in the lab somewhere that you can find it the next day. DAY 3 1. Find your penny and measure the mass of the penny using the balance (in grams), record the mass in your data table. AP Chemistry Unit 4: Chemical Reactions

Density of Pennies Lab Report - Hazleton Area High School
Sep 13, 2011 · Conclusion: In this lab, the pre-1982 pennies had an average density of 6.3 g/mL. Based on these results, I Based on these results, I believe the pennies were made from the element tellurium, which has a density of 6.232 g/mL.

Penny Drops Lab - Weebly
Penny Drops Lab Question: How many drops of water will a penny hold? Hypothesis: I think a penny will hold _____ drops of water. Materials: Penny, Eyedropper, Water Procedure: 1. Put the penny on a flat surface. 2. Use the eye dropper to drop water on the penny, one drop at a time. 3.

Formation of a Brass Penny and X-Ray Analysis
Feb 2, 2021 · Brass Penny Lab 1. Students will read handout for homework and do Pre-Lab questions and #8. 2. The next day they will conduct the lab Assessment: The assessment for this activity is the lab handout attached. Extensions: The extension activity for this lab is using the XRD data to determine which phase or phases of brass are present in the penny ...

Experiment 2 Statistical Analysis of Pennies
place ( 0.0001 g). Record the mass and year of each penny in your lab notebook. When you are finished, enter the mass and year data set into the Excel spreadsheet on the laptop computer in lab. We will plot the class data, constantly updating the plot as it is added. Toward the end of lab we will save the class data.

AP Chemistry Lab Handout 01 Per Cent Copper in a Penny …
sections of the edge of the penny, 180° apart. You should be able to see the shiny zinc interior. 4. Find the mass of the penny to the nearest 0.001 g and record. 5. Place the penny in your beaker and add 40 mL of 6 M HCl. 6. Place the beaker in a safe location for 24 to 48 hours. 7. Leaving the penny in the beaker, pour the HCl into the sink with

Chemistry: Isotopes
In this lab, you will investigate isotopes. As you recall, isotopes of an element are atoms that have the same number of protons, but have different numbers of neutrons. You will find the number of isotopes of several elements: pennium, orangeM&Mium, blackM&Mium, and flaskium. You will also find the percent abundance of each of the isotopes.

Isotopes of Pennium
2. Find the mass of each penny separately. In the Data Table, record the year the penny was minted and it’s mass to the nearest 0.01 g. 3. Place the 20 pennies in the resealable bag and return the pennies and the laboratory balance to the area designated by your teacher. PART 2 1. Record the code number of your sealed bag. 2.

Claims, Evidence, & Reasoning - Deer Valley Unified School …
that answers the problem/question. ... evidence from the penny lab. EXAMPLE: WATER IN SPACE Water in space will form into a sphere shape. The water in space video of the astronaut confirms this claim. As seen, the water particles, when released from the container stuck together. This reaction formed

Honors Chemistry Lab 17: Transition Metals , Alloys, and …
During this lab we will specifically explore the concept of metal alloys and magnetism. Remember to always read before you proceed. Part 1: Penny Alloy- Read through entire procedure before starting the this section and create a data table suitable for the qualitative data that you will assimilate during this section of the lab.

Composition of US Pennies
Be sure to measure carefully. Careless measurement may require repeating the lab. Record the following data: appearance of the sample pennies, mass of each 10 penny sample, their volume, and the range of dates on the pennies. Determine the density of the pre-1982 penny and the post-1983 penny sample. Conclusion 1.

INVESTIGATIVE STUDY: HALF-LIFE OF PENNIES - Weebly
penny will represent the parent nuclide, HEADSIUM. The tails-up penny will represent the daughter nuclide, TAILSIUM. Shaking the pennies for 5 seconds will represent one half-life period. During this period, some headsium nuclides will decay to form tailsium nuclides. PROCEDURE 1. Each group will need a cup containing 100 pennies, and a ...

Name Date Class mini LAB 4 Model Isotopes - Deer Valley …
the penny “isotope” data, the mass of each penny isotope and the average mass of a penny can be determined. Materials bag of pre- and post-1982 pennies, balance Procedure 1. Read and complete the lab safety form. 2. Get a bag of pennies from your teacher, and sort the pennies by date into two groups: pre-1982 pennies and post-1982 pennies.

Chemistry Name Period Isotopic Pennies Lab
Isotopic Pennies Lab Introduction: Because they have different compositions, pennies made in 1982 and earlier and ... Calculate the mass contribution of each penny isotope by multiplying the percent abundance by the mass of one penny. Write your answers in the data table. 𝑖 𝑖 …

Experiment 1 – Density - California State University, East Bay
lab (for example using 1, 2, 5, 10, 25 mL volumetric pipet) it is a good bet that the precision will be to ±0.02 mL. So the reported volume using a 10 mL volumetric pipet would be 10.00 ±0.02 mL, giving four significant digits in the value. The pipet should be rinsed three times with the sample

Penny Lab /20 Name: - theschaub.ca
lab. We tried to make sure everyone felt involved and understood the concepts. For the most part my team and I worked together on the lab and we all understood most of the concepts. For the most part my group members and I worked together on the lab and I understood all of the concepts. I did well on the lab and I understand the concepts ...

Finding the Atomic Mass of the Pennium Isotope Lab #5
This lab uses pennies to demonstrate how weighted average masses are calculated. Research Question: ... pennies minted in 1982.) Record the number of each type of penny (pre-1982 and post-1982) in the data table. 2. Mass the entire stack of pre-1982 pennies and record the mass. ... Explain why group answers for the weighted atomic mass of ...

The Scientific Method
1. After collecting the students’ papers, review the correct answers with the class. 2. Pass out the student activity pages for the Penny Lab. Students should read the instructions and perform the lab during class. 3. After completing the lab, students should turn in a laboratory report before the end of the period. 4.

Penny Density Lab: Formal Lab Report Support Sheet
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Properties of Water Lab - PBworks
Obtain a DRY penny and place it on a DRY paper towel. 2. Using a clean straw or pipette, add water to the penny drop by drop until it overflows. Be sure to count the drops! Record the number of drops for Trial 1 in Data Table 1 below. 3. Repeat steps 1-2 for a total of five trials. Part 2 4. Obtain a DRY penny and place it on a DRY paper towel. 5.

Penny density lab answer key - seranogi.weebly.com
pennies separate. Really emphasize how they all did not get the right answer, rather, that the range of answers is what we were looking at. Assessment Assess the quality of the data tables and include questions about the lab on a later test. During the lab, identify the groups having trouble and orally quiz as many students as possible.

THE SPECTROPHOTOMETRIC DETERMINATION - Purdue …
1. Obtain a penny minted after 1982. Weigh the penny on the analytical balance to the nearest 0.0001 g and record the data in TABLE 1. 2.With a ruler, carefully measure the thickness and the diameter of the penny to the nearest 0.1 mm. Record your data in TABLE 1. Note that we will assume that the penny is perfectly

Buoyancy Lab: Aluminum Foil Boat and Pennies - Weebly
4. Place boat in water container 1 at a time. Add one penny to the boat at a time until the boat starts to sink. Record your number of pennies (minus the one that sank it) in the data section. Be sure to dry all pennies between trials! 5. Clean up any spilled water and your work area. Dry off the pennies and return them to the penny bucket. 6.