Penny drop lab answer key

What question are we trying to answer or discover? To see if a penny will hold more drops of water if it is dipped in soap. How many drops of water can you get onto a coin? This experiment is a fabulous way to investigate surface tension and the molecular attraction of water. How many drops of each liquid can be placed on a penny? Explain the reasons for any differences you observe for the four liquids. You might think that you can't fit many drops of water on the surface of a penny. Answer Key. Vol of cyl. Drop in drops, sit on penny. The control group in  GSlO6 Key Lab 1. Liquids tested: Waitedm and Hexane( C6 H/fl ) 11/1; H l \;1 ”I l)?. Part C Answer Key -. A variabie that 15 | : 4K Cbhdflct a Contmllfid EXPerlmtht-thahge i changed to find how that change affects : y i one variable for the experimental group but | other  Step 3: Use an eye dropper to place drops of WATER on the penny (one at a time) until ANY amount of water . Viscosity, Surface Tension, Capi'ilmyAcrion, etc! 4} N7 H \ fH C,“ /7. Dissolve in  In this lesson and its associated activity, students conduct a simple test to determine how many drops of each of three liquids can be placed on a penny before spilling over. Compare your Key Questions: How many drops of water they think a 5c coin can hold? Were your predictions correct? Will syrup/oil hold more or less drops than water? Why? How is it possible to get so  Turn in the Penny Lab write-up to your teacher after completing it. #1. How many drops of water can you fit? There's only one way to find out… by adding one drop at a time! In this lesson and its associated activity, students conduct a simple test to determine how many drops of each of three liquids can be placed on a penny before spilling over. 30 minutes. Step 2. This experiment demonstrates the intermolecular forces (or cohesive forces) between molecules of a substance. ANSWERS WILL VARY. B. Predict in the lab sheet: how far can you stretch the drop of water? Find the difference between the prediction and the actual length. Answer the lab questions. Come Fly With Us. In this experiment, you will visualize the surface tension of water by dropping water onto a penny with an eyedropper. Answers will vary; however, students should attempt to use the terms and/or definitions in  drops of water. The modern With sticks, remove the penny from the chemical and drop the penny into a second 50 mL beaker with 20 mL of water. 11 Feb 2015 Use the Motion Lab Reports and Video on the Analysis of Motion page to complete the assignments. There is no additional. Question: How does soap affect the wa. ACTIVITY 2 - PAPER CLIP FLOAT. #3-6: Half-Life of a Penny. Background Info: We used a Count the number of drops the penny will hold before it releases the water onto the table. Sick Science! 109,046 views · 1:05 · percent Cu in penny - Duration: 4:42. Use this information to help you answer the questions on the lab sheet after you have completed the experiment! 4. OR… Water domes on  Name: ____KEY The more drops that fit onto the penny means a greater surface tension, the fewer drops means a lower surface tension. • Check for students' understanding by asking the provided key questions while. Materials. Develop a hypothesis that answers the experimental question. Use the eye dropper to drop water on the penny, one drop at a time. ter's surface tension? 2. Explain your results from both parts of the experiment in terms of cohesion and surface tension. To complete this lab, you will need to turn in 2 paragraphs. Pose a question that has arisen from your investigation of the pennies. Procedure: Put the penny on a flat surface. *** These materials are given to the students, they then get time to “ play” with the materials to see what they will do together. Procedure: G0 to a balance and find a glass specimen dish. Data:  A two page FREEBIE over the classic experiment -->How many drops of water can a penny hold? The kids always enjoy this lab and they are always surprised at the surface tension of water! Enjoy! Total Pages. Prediction The prediction given today is that the clean penny (the penny that isn't affected by ant  The law of inertia, Isaac Newton's First Law of Motion, states that an object tends to stay at rest or in straight line motion if no outside force acts upon that object. . Initial vol 15 ml 15 ml. Record your data. This will be done by observing how many drops (mL) of water can be added to the surface of a penny before it spills it over. The reaction is illustrated by the following equation: 2CuO + C6H8O7 → Cu2C6H4O7 + 2H2O. i . Since soapy drops are smaller, more soap drops will fit on a penny than plain water drops. What do I need? 20 dull, dirty pennies; 1/4 cup white vinegar; 1 teaspoon salt; A clear, shallow bowl (not metal); 2 clean steel nails; A clean steel screw or bolt; Paper towels. “Gold” Penny Lab. 2 pages. With sticks  Step 3: Use an eye dropper to place drops of WATER on the penny (one at a time ) until ANY amount of water . f-z. *** These materials are given to the students, they then get time to “play” with the materials to see what they will do together. How many drops of water were you able to add before the water ran over the penny's sides? Mix a small amount of dish soap with your tap water. These are the only materials that can be used for the experiment. 25 Jun 2015 Once the drop spills over the penny's edge, use a towel to completely dry off the penny and surrounding surface. 1  Scientific Method ~ Coin LabHow many drops of water can a coin hold?You are a Scientist! Apply the Scientific Method as you work throu Because of surface tension, the water will rise above the rim of the glass before it spills (just like the initial experiment). Tourists often come to Seville to see the beauty of Spain. Number of Drops I I. Reactions and Solution to Problem. In this lab, you will determine and compare the density of two sets of pennies by graphing mass vs. . #3. The Drops . Target(s). 5 drops  Gather remaining materials and take to lab station. Variables. 2 Eyedroppers. Explain your results in terms of cohesion and surface tension. Develop a hypothesis that answers the experimental question' Write your What are the constants in'this lab (list at leastihree)?. 31 Jan 2017 - 35 sec - Uploaded by Donald Everly2:43 · #THE SCIENCE IS OURS (01) - Drops on a penny - Duration: 2:42. Time how long it takes to move the drop through the maze. Soap (a surfactant) will then be added to the water to test if this changes how many drops can be held on the penny. Spin, flip, roll, hold water. The content of each paragraph should be: Conduct a search to determine the cause of the pattern you observed in your mass measurements. The number of water drops that can fit on a penny will surprise you. Nuclear Chemistry. Materials: Penny, Eyedropper, Water. 1. #2. and collect it before you continue. ak Conduct a Laboratory Experiment. A coin dropped from a Explain your answer in physics terms (including, but not limited to gravity, acceleration, free fall, etc). How much is a penny worth? “One cent” is certainly correct, but then again maybe it's not. Now, we all know  Gloves. Test your hypothesis (EXPERIMENT) by comparing the number of drops of tap water that can fit on a penny to the number of  The purpose of this lab is to investigate the property of cohesion and adhesion of water. In doing so, you are following a tradition that goes back to the earliest days of chemistry. Water Look for differences as well as similarities – patterns are key! . Using inertia, we can drop a penny into a cup without touching it. 7th Grade Environmental Science. The independent variable in this experiment was the side of the penny. Teaching Duration. 5 ml 21. Drops On A  Soap reduces the cohesive force, and breaks the surface tension. What is the dependent variable? (What are we checking to see?) How many drops of water the penny will hold. Research the answer and explain what information  experiment, students can observe the different physical and chemical the penny. C' C“ ' mtion 1: Drops of Liquid on a Penny f/ C/ \C/ \ / fl? '“ C. Materials: Penny. Count the number of drops until the water spills over the edge of the penny. 3. The oranges that grow here are sometimes called Bitter Oranges, because they are sharp to the taste. Pre-AP Activity. For full  Aug 20, 2012 Students use the penny drop lab as a refresher of the scientific method. Penny Lab Purpose To observe the surface tension of water is affected by the addition of dish soap. Q3 Capstone Lab. Repeat steps 1 -4 for a total of 5 trials. Drops On A  Penny Lab Purpose To observe the surface tension of water is affected by the addition of dish soap. N/A. between two water molecules. What is the independent variable? (What are we testing?) The soap. Pick up water, hold water, drop water in drops. Penny Lab Drop the helicopter and note whether it spins clockwise or counterclockwise. Background and Key Concepts. 3. Soapy water makes smaller drops than plain water. The three liquids are water, rubbing alcohol, and vegetable oil; because of their different surface tensions, more water can be piled on top of a penny  Surface tension refers to water's ability to stick to itself. The polarity of water molecules can help explain why water has a strong surface tension. The attraction of molecules at the surface of a liquid is called surface tension. Now, repeat the experiment using soapy water. It all depends! Confused? Read on. SciTeachMrJ 611 Surface tension can be measured and observed by dropping water (drop by drop) onto a penny. • Guide students through their experiment to determine how many drops of distilled water will fit on a penny and how many drops of soapy water will fit on a penny. A PENNY As in the case of pennies, chemists are often asked to find way to substitute less costly, more plentiful resources for scarce and expensive ones, without sacrificing key  IV. Put a dry piece  18 Nov 2010 Test your hypothesis by comparing the number of drops of tap water to the Drops On A Penny Lab Cohesion Water molecules are attracted to other water molecules. Experiment #1: Visualizing Surface Tension on a Penny. D. David Terrell Ph. 4. AP Chem Liquid Mini—Lab Nome: Sag/£0 Seat it. Wiping off the . They Educators only. The penny. e. Pennies are just so small! In the Drops on a Penny experiment, though, you'll experience surface tension and cohesion at their finest. The purpose of this lab was to determine the effect soap has on waters ability to stick to itself. They will compare the way water behaves  Allow students to practice using a pipette before beginning their experiment. Problem: How does trial number of drops ______. Submit the 2 assignments in Penny Drop Discussion. ANSWER KEY Below are suggested answers. Students will place drops of water in an already-filled test tube and on the surface of a penny. These forces are responsible  (this is the question you are trying to answer by conducting this lab today!!) 2. a pea-sized sample of starch + 10 drops distilled water + 1 drop iodine solution e. The dependent variable in this experiment was the number of drops on a penny. After they have discussed a way (procedure) to find out (experiment), hand out the worksheets. The idea behind surface tension is  You might think that you can't fit many drops of water on the surface of a penny. Girl mixing solution  If the drop separates, go back. Mass 57. (Lab-IMF Report can be found on the Content page or under 3 pennies with paper towel or Kleenex to dry them in between trials. Place penny onto a paper towel on a vertical, solid surface. Nf9'g. Ask students to fill in their names, and then read the worksheet as a  Plastic Cup. HLC. 5 ml. 25 Feb 2016 Minyan Gao Properties of Water Lab Introduction Part 3: Solvency Part 2: Adhesion Part 1: Cohesion MATERIALS The most defining characteristic of Earth viewed from space is its beautiful blue colour. Comments & Ratings; Product  tension. Be sure to do all steps and answer all questions. About 75% of Earth and roughly 50-95% of an organism's mass is made up of water. Although it was number of drops that can fit on the “Lincoln” side of a penny. She lives in Seville, Spain. Fill empty 100-mL beaker with 30-mL water. Find and post a website  7 Jan 2014 KEY CONCEPTS AND DEFINITIONS OF TERMS: NOTE: Before beginning any demo or activity, ask that students that have previously seen the experiment not answer pre-lab questions. Dissolve in  Nov 18, 2010 Test your hypothesis by comparing the number of drops of tap water to the Drops On A Penny Lab Cohesion Water molecules are attracted to other water molecules. the Write a paragraph below (using complete sentences) that explains how soap affects the surface tension of water, using your data to help you answer the question. Paola is 12 years old. When water is gently dropped onto a flat surface like a penny, it stays together, forming a small drop, questions and collect, organize, and represent data to answer those questions. Pre-Lab Question: Ask students to predict how many drops of water will fit on the penny before it spills off. Repeat steps 7-9 for a We averaged them all together to get the most common answer. Before beginning lab, develop a hypothesis that answers the problem statement above. Prediction The prediction given today is that the clean penny (the penny that isn't affected by ant  30 Apr 2013 before leaving. The streets of her city are lined with beautiful orange trees. Purpose: To design and test a hypothesis. Grade 3 Benchmarks for Math: Benchmark MA. 10. Gloves. These forces are responsible  Jan 28, 2016 Drops on a Penny - Sick Science! #152 - Duration: 1:05. Surface tension is what makes water dome on the penny. Your teacher will review the correct answers. Mrs. paste the answers to each question in the appropriate space. d. Another student-centered activity which has been included is the Penny Lab. In addition, the citric acid interacts with the copper oxide, dissolving the oxide. 9. Because of cohesion, water and other liquids form thin films and drops. Metal Cylinder #1 gold in color Metal Cylinder #2 silver in color. Comments & Ratings; Product  But how can we observe water's surface tension? Surface tension can be measured and observed by dropping water (drop by drop) onto a penny. in Scientific Method Practice 2 to your teacher at the beginning of class. Report this Resource. How many drops of water can you fit? There's only one way to find out… by adding one drop at a time! How many drops of water will fit on a penny? Show students the materials they have, and ask them how they would use these things to answer the question. Drop Box. Write your hypothesis below…THIS IS YOUR “CLAIM”. Fill in the table below with the number of drops you added to the penny of each substance before the liquid spilled  7 Oct 2010 The key to answering the riddle is to understand the relationship and object's mass and the volume it occupies. Penny Genetics Lab Answer Key - Duration: 0:35. I. Surface Tension and Cohesion. Task. • Check for students' understanding by asking the provided key questions while. As the lab is designed,  Key Concepts. The three liquids are water, rubbing alcohol, and vegetable oil; because of their different surface tensions, more water can be piled on top of a penny  Plastic Cup. 100 drops. am 63 ml Activig 3: Surface tension is also responsible for the number of water drops you can put on a penny. volume. Distribute Scientific Method Practice 1, and have students read and answer the questions for homework. 11. Report Requirement: Answer all of the questions/do all the computations requested in italics. surface tension can be measured and observed by dropping water (drop drop) onto a penny. It can also be described as the resistance of any object to change in its motion. k Independent Variable (X). Research the answer and explain what information  Allow students to practice using a pipette before beginning their experiment. Data:  A two page FREEBIE over the classic experiment -->How many drops of water can a penny hold? The kids always enjoy this lab and they are always surprised at the surface tension of water! Enjoy! Total Pages. Drops of Water. Q4: Chemistry & Society. Answers will vary; however, students should attempt to use the terms and/or definitions in  drops of water. After adding the drop that Conclusion: I have accepted my hypothesis because of the results of the data from this lab. These principles will be demonstrated by adding drops of different liquids to pennies to Key Concepts: • Cohesion is the attraction of molecules among its own kind; i. Diagrams should show that molecules in the interior of the pile have attractive forces  I filled the pipette with the soapy water solution and began to start adding drops of the solution to the same penny, from the distance of ½ centimeter, at a rate of one drop per second. In this lab, you will be converting a regular penny into a “gold” penny. Final vol 21. 2,727 views · 4:42. Answer the questions about this experiment on your lab sheet. Gianne Albertoni 85 views · 0:35 · Readworks Answer Key The Penny Experiment  Penny salt lemon bowl. Experiment results: Students should be able to put about 40 drops of water, 24 drops of rubbing alcohol, and 14 drops of detergent solution on the penny before they spill over. In my hypothesis I  The Gold Penny Lab. Lab Station A: Surface Tension Lab. Pennies are just so small! In the Drops on a Penny experiment, though, you'll experience surface tension and cohesion at their finest. Penny. Penny Plop: An Exploration of Surface Tension. We will make some observations and then use the scientific method to answer a question about surface. Krempa. Scientific Method Practice 1. #3-7: Measuring the Energy Content of Food. Penny Set A was lab report. Answer each question related to the experiment. Properties of Water. Fill the second pipette with plain water from the small beaker, hold pipette vertically and drop liquid in the pipette slowly onto the penny while counting the number of  45 minutes. This . Change one : thth that can vary! or Change' l l r variable to see its effect on another variable. Penny Lab Answer Key - A