# Penny density lab graph

## Penny density lab graph Collaboration = ALWAYS. You should use this in conjunction with the formal lab report packet because this does not include all parts that should be in each section! Procedures: #2 1. It was determined that solids are the most compact (meaning they have the greatest amount of mass in a certain volume), gases are the least compact, and liquids are less compact than solids but more compact than gases. Share your data with 3 to 4 other groups then make a graph showing the change in the density of pennies over the years. Measure the mass (grams) of pennies using the 1 decimal electronic scale for the following numbers of pennies: 1 penny, 2 pennies, 4, 8, 15 & 20 pennies. DENSITY OF PENNIES LAB. The units for volume are either cubic centimeters (cm3) or milliliters (mL), so the units for density can either be g/cm3 or g/mL. You must weigh each penny on an analytical balance. That value can be determined from measurements of the density of the zinc and copper in the penny and their percentages. 8098 Cyclohexanol 0. 2) Calculate the density of each metal by DENSITY = MASS / VOLUME. Remove the penny from the balance with tweezers and place in the beaker . Then calculate the actual density based on the actual makeup of the pennies. The identity of the composition of these pennies will be determined. Materials: 25 pre-1982 pennies 50 mL graduated cylinder 25 post-1982 pennies Balance Procedure: Work with one set of pennies at a time!!! 1. 77 {g\over cm^3}$$Compare this value to the density of pure zinc at 7. Density. 748 and when using the water displacement the volume was of 6. 0001 g). Examining the linear relationship by learning to use the best-fit straight line. 14 g/cm 3 and we see we have a problem. 3. Now fill the gradulated cylinder with water until it reaches the number "10". (95% copper, 97. ” Choose one of your unknown metals to graph. Background: Density is mass per unit volume (D = M / V). The density of zinc is 7. 1 grams. or responding variable. Density of Pennies Lab Introduction: Paragraph form Summarize background in own words Include purpose - The purpose of this lab is to measure volume and mass for pre and post 1983 pennies, graph this data, and determine the two densities by graphing methods. The post-1982 pennies are made of lead. or manipulated variable. Calculate the averages of your two trials and record them in the 4th column of the data table below (these are the numbers you will graph). Oct 28, 2009 · The density of copper is 8. Notes: Density is a derived unit, the formula is; Density = mass/ volume. , the same. b) Calculate the density of each metal using the graph. 15 minutes offering answers to CAUTION: Never put lab supplies into your mouth. Clean Up. A forensics technician claims she can determine if the coin was minted before 1982 without altering the coin in any way. Paper towel . Since then, they have been made with an outside coating of copper and an inner core of a different metal. Record your individual lab station data on the “Class Data Table. 2. Equipment. Experts have found that large numbers of predator fish like tuna and billfish (large fish such as swordfish and marlins, that are characterized by long sword-like bills) are commonly found in biodiversity hotspots. 0 mL of material. 1g/ml. ) From the graph, determine the densities for the pre- and post-1982 pennies. Describe how the concept of density relates to an object's mass and volume. extensive properties Homework: Week 2/3 Homework p. ANALYSIS is all about… Graphs = 2, one using . n. 3 Quarters, 1 Dime, If the mass is 21. The density of a post-1982 penny is about 7. Copper and zinc are different elements and therefore have different density values. Aug 29, 2019 · Then compare the calculate density to the actual density of the metals and reward the closest group. Year. 19 g/mL . Y-axis = dependent. Use the proper units and sig. Record this. Sep 30, 2014 · at first, you have to find the density of the penny. 89 Post 1982 pennies. doc), PDF File (. Penny Analysis Worksheet Answers (docs) For example, students might attribute their observations to the different densities of the liquids. 0 g/cm3 Calculate the volume of a rock with mass 100. 9624 DENSITY OF AN UKNOWN LIQUID AND PENNIES. Post-Lab Calculations and Analysis 1. The average height of one penny: pre-1982 and post-1982 The average diameter of one penny: pre-1982 and post-1982 The average volume of one penny: pre-1982 and post-1982 The experimental density of pre-1982 pennies and post-1982 pennies Analyze and Application Answer these questions in complete sentences on a separate sheet of paper. Audible resonance a. At first, I trid to get the density of each of the three pennies, but I dont know the volume of the pennies to get their densitythe only information about volume my teacher gives me in this lab was that there were 15mL of sodium hydroxide solution The pre-1982 pennies had a density of 7. You might think that you can't fit many drops of water on the surface of a penny. 15 g/cc for a new penny versus 9. Observe your pennies at 1, 2, 3 and 8 hours. Mint changed the composition of pennies. The density of a solution depends on the concentration of solute. In this experiment, you will use a graph to determine the density of post-1983 pennies. According to the US Mint (www. 6 grams and you can Naturally there is no easy way for us to perform such an experiment but, This lab teaches skills in measuring the density of a liquid, and the liquids used are solutions of It is based on creating a graph the shows mass versus volume. 6 percent zinc and 2. 002 Objective/Key Understanding: I ca n measure volume and mass for pre and post 1983 pennies, graph this data, and determine the two densities by graphing methods. They are possibly made from zinc because the density of zinc is 7. Place 5 pennies in the cup or on the platform and find their mass. Purpose: The purpose of this lab is to accurately determine the densities of pre-1982 and post-1982 pennies. Data analysis, graphing and drawing conclusions Intensive vs. In the graph you plotted, rise/run is equal to mass/volume, which is the formula for density. 4. 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. Fill in your prediction/hypothesis. Remember, density = slope = (y2-y1) (x2-x1) Compare the density you obtained for the post-1982 pennies to the density chart on page 1. you expect to be higher? 5. 6081 g 30. You have been given a penny produced in each of the past 6 decades. Draw a “best fit” straight line through each set of data. c) Which sample is more dense? 2. 96 grams/cm 3. H Lab. minted penny based on the mass of the pennies. On the same graph (but in a different color), plot the data for the pennies minted Density of Pennies Lab . The equation that describes density is: d= m v (Equation 1) where “d” stands for the density of an object, “m” stands for it's mass, and “v” stands for the volume occupied by that object. Once the water has reached the edge, you begin to see a bubble or dome of water forming on top of the penny. 1793 to 1837. Density is an important property of matter. 0mL, and 0. **The*penny*must*be*minted* • Density is defined by the ratio of the mass of a substance to its volume. 5. DENSITY OF PENNIES LAB Before 1982, pennies were made of a copper alloy. The mass measurements had 4 significant figures. Post-1982 pennies contain a different metal coated with a very thin layer of copper. Compare the density of different liquids, change water's density, and do 4 liquid density Earth & Space Projects · The Rock Cycle · Star Chart Worksheet Will a raisin, paperclip, penny, small cork, ball of paper, and other small objects Based on your results from experiment #1, predict which liquid you think is the most Laboratory Experiment 2. Include purpose - The purpose of this lab is to measure volume and mass for pre and post 1983 pennies, graph this data, and determine the two densities by graphing methods. 5 14. The year the coin was minted is important to the case. GenChem - lab #1 (Pennies) # of Physical Science Course Descriptions : Physical science is a study of the relationship between matter and energy. Balance Pennies. The slope that was showed on the graph was 0. Based on these results, I Nov 29, 2016 · GRAPH 1: Make a graph in Excel or Google Sheets using the data above. Mint produced more than 130 billion pennies all of pure copper with a density of 8. Drop water on the HEADS side of the penny and COUNT the number of drops. 0 g, volume = 20. Before 1982, pennies were made of a copper alloy. In this lab, you will determine and compare the density of two sets of pennies by graphing mass vs. Slope = Density = 3. Hypothesis: The pre-1982 pennies are made out of zinc. All matter takes up space (volume) and has mass. Part 1- Density of a Liquid: Mass of cylinder: 89. In 1982, the U. 5 38. Analyze your graphs. 4 percent copper with a density of 7. A penny is made of copper and zinc. Carefully follow the procedure and collect data in an organized table. You can do this by using the [TRACE] function on the calculator. write about your collaboration data as well as your own data!! Jan 23, 2012 · Part of North Carolina School of Science and Mathematics Online collection: This video deals with the measurement of pre 1982 and post 1983 pennies, demonstr The mass of one cubic centimeter of copper is 8. Purpose: To determine density of older (before 1982) and newer (after 1983) pennies . • Next, determine the linear mass density of the string using the relationship of tension, length, number of segments, and frequency for standing waves on the string. 18 g/cm On ONE sheet of graph paper, plot mass (y-axis) vs volume (x-axis) data for both sets of pennies. 5998 g 7. Density Lab. Data Table #1 – Pre-1982 (older) Pennies (Copy into your lab notebook before lab day. 52 2 14. Day 2 7. Obtain 10 dry pennies from the front of the room. Step 4: Record the number of drops for that trial in the table. This graph interprets the results of the experiment. 00 mL We hope we can explain the difference between mass, weight and density so clearly (It turns out that the average penny has a mass of about 2. Explain how objects of similar mass can have differing volume, and how objects of similar volume can have differing mass. surface tension can be measured and observed by dropping water (drop drop) onto a penny. of density. Copy down all class data pertaining to that metal. You will measure and compare the masses of the pennies. The NaOH dissolved the zinc. In this lab, experimental value of pre- 1982 penny is 10g/ml and post-1983 penny is 8. This lab illustrates scientific method tension. Liquid Density (g/mL) Methanol 0. The post-1982 pennies had a density of 8. 0 cm3 and density of 2. the cylinder with pennies Volume occupied by pennies Penny Density (g/mL = g/cm3) Density Uncertainty Average Density (g/mL = g/cm3) Standard Deviation Density (g/mL = g/cm3) Show the calculation of the density uncertainty in this space: Be sure to append and discuss a computer generated plot of mass of pennies as a function 1. 7914 Octane 0. Introduction: Paragraph form. 21 5. 3 Concentration, created in Graph 1, what was the relationship between the place ( 0. 11 3 26. txt) or read online for free. Density formula: Fill in the triangle to the right using the density formula. Drop an old penny on a lab bench. These principles will be demonstrated by adding drops of different liquids to pennies to determine the strength of molecular attraction. Salt Water Density Experiment: Here's a brightly colored science experiment that not only looks cool, but allows students to develop their own understanding of density! I used this experiment for a freshman Physical Science class, but it could be adapted for many ages and si Density of Pennies Lab Objectives: To determine density. The Liquid Volume There are many different instruments you can use to measure liquid volume such as kitchen measuring cups, beakers, graduated cylinders and volumetric pipettes. You will need a millimeter ruler (read it in centimeters), your 50 mL graduated cylinder, a 10. Cut an old penny and a new penny in half with a pair of tin snips. 5 47. 1 Determination*of*the*Mass*Percentage** ofCopperinaPenny* * Introduction* * This*experiment*will*cost*you*one*penny*(0. 0 mL volume of water ÷ 3. 96 g/cm 3) while pennies minted after 1982 should have a density almost the same as pure zinc (7. 0 mL 10. doc General Chemistry Lab 1025C Comparing the Density of Pennies-SL Introduction: Occasionally the US Department of Treasury changes the composition of pennies, which changes the overall mass and density of each coin. to better off explore the results of the data its easier to see that the density of the post 1982 penny is of 6. 0g/ml and the hypothesis was if the density of a post 1982 penny was determined than it Density Lab Report Abstract For the indirect determination of density of a pre-1985 penny, Archimedes’ displacement principle was utilized. penny. S. Pass the pieces around so students can see the zinc core in new pennies. Procedure. Then, you will use known density values to identify the metal used in the core of these pennies. Determine the slope of each line. 16 Class Handouts. 5. penny/dime/nickel Part D: Using a ruler to measure the volume of a regular solid 1. 5 g cm-3 0 50 100 150 200 250 300 350 400 450 0 20 40 60 80 100 120 Volume (cm 3) Mass (g) Graph 1: Determination of Density of Substance A . Explain why changing an object's mass or volume does not affect its density (ie, understand density as an intensive property). This is shown by the increase in density from gas (0. Add one or two drops of soap to the cup of water and see how this affects the number of paperclips it will hold. 7025 Chloroform 1. If you have a question regarding the lab, you have two options. 14 g/mL, pennies nowadays have a lower density than they did before 1982. Set Up. Show all four % error calculations under the data table in your lab report. Plenty of Fish in the Sea? Part C: Interpreting Species Density Graphs. 42 g 2 123. 0mL, 0. Mass, the amount of matter in a substance, is determined by comparing the mass of the object to a standard mass. The Penny From 1959 through to 1981, the U. Step 3: Use an eye dropper to place drops of WATER on the penny (one at a time) until ANY amount of water runs over the edge of the penny. 93 g/mL and that of zinc is 7. Use Density to Date A Coin A penny that has had its date scratched off is found at a crime scene. Copper has a density of 8. Post-1982 Pennies. Penny Set A was minted before 1982. Step 2: Place the penny on paper towel. By itself, or in conjunction with other properties, density can be used to identify substances. • Density affects the workings of hot air balloons. You will record the masses of pennies, perform statistical analysis on the raw data, and draw conclusions based on those analyses. The necessary materials per lab table (2 groups) are: 8 pennies; Paper towels The property called density describes this relationship. Hypothesis: Which . Science help is available from 8:30-5:00 Eastern Standard Time, Monday through Friday. Penny Density Lab Purpose: The purpose of this lab is to obtain the mass and volume of two different metal samples, to graph data, to obtain the slope of graphed data and to display a best fit curve of experimental data in order to graphically determine the density of each metal. Take the data and make a plot of mass vs. (that was what made the water murky) And small pieces of zinc adhered to the penny (coated) It was a physical change because no NEW color was created. 2 Quarters, 3 Dimes. All of these pennies range in year from 1983 to 2010. During 1982 the penny fluctuated between 3. Plot both sets of penny mass (y-axis) and penny volume (x-axis) data on the same graph (attach). 5% zinc and only 2. 97 4. Graduated cylinder & water mass- Volume of Pennies (mL) Density of Pennies Concluding Questions 1. You will make a hypothesis and perform an experiment to see how many drops of water can fit on a penny. The density of pure copper is 8. 5% copper, and since the density of copper is 8. 13 3 20. The units for mass are grams (g). When Label the following on your graph: title, label each axis, units on each axis, appropriate/logical number scales on each axis, and key. volume. (Not a “connect the dots” line. GRAPHING DENSITY FUNDAMENTALS : MASS vs. 14 How could you improve your accuracy and/or precision in this experiment? 15 May 2008 Pennies Lab - Free download as Word Doc (. Below is a picture of a scratched penny before and after it had been submerged in lemon juice. 1363 g 15. Average your results. In this experiment, you will determine the average density of two groups of pennies made at different times. Objective of pennies. 5 mL volume of pennies 6. 92 g/ cm3 as the densities are not close Part B: Determination of the Density of a Penny using Archimedes’ Principle 1. Be sure to title it. 5 mL volume of pennies 3. Penny Density Lab Report overview. after 1982, pennies were made with a zinc core and a light copper coating on the outside. Even if penny, cork, nail, rock, wood, golf ball, ping pong ball, pencil Calculate density when given a means to determine a substance's mass and volume. Penny Density Lab Date:_____Hour:_____ General Chemistry Page 2 Materials 25 pre-1982 pennies 25 post-1983 pennies Balance 50-mL graduated cylinder Paper towels Procedure 1. California Science Content Standards: • 2. Repeat the experiment after telling students to listen very Getting the Data. Don’t forget units! Data table 4 object length width height volume metal cube (1 or 2) metal slab (green/silver) large cube (gold/silver/bronze) Water domes on the penny because of surface tension #4. In a scale from one to ten based on the reactions and changes that pennies had, I gave it a score of 8 to pennies inserted in vinegar and salt and a 1 to If the penny or pennies are not removed, organ failure and death can occur. . e) Divide the mass of a penny by its volume to determine its density. Materials List: Graduated Cylinder Water. Show all calculations for slope in your report and attach your graph. #mathclass @srossteach Made five calculator explorations using @desmos for my kids to explore transformations. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The mass per unit volume of a substance under specified conditions of pressure and temperature. As known as Kernel Density Plots, Density Trace Graph. 5 grams. Calculate the density, d, of your block, and determine the uncertainty associated with this single measurement of the density, ∆ d , using Eqn. 9 Sep 2014 Density is defined as the ratio of a substance's mass to the volume it In this experiment, you will measure the mass and volume of several materials. Instructor: J. Newer pennies are actually almost entirely composed of zinc, but the thin coating of copper on the outside makes new pennies look very much like they are made of copper. figs. 0 g and density 5. Record the mass and year of each penny in your lab notebook. 9754g/mL for 30. 905cm)^2} = 5. 6. 82 4 37. Penny Lab a. 1-2 Density of Pennies Lab Density A physical property of matter The mass per volume of a substance. Wash hands after completing the lab. X-axis = independent. A penny manufactured after 1982 is made from 2. Mar 31, 2011 · PLEASE HELP ME ANSWER THIS. Each of them should be similar or same to one another. Units: g/mL or g/cm3 1 mL = 1 cm3 Calculate Density Mass = 10. Drop a new penny on a lab bench. Step1: Determine the density of water based on the laboratory temperature using. Each student will obtain 15 pennies from the instructor. 0 g, 5 cm3 Calculate the mass of a sample of matter with a volume of 10. Thus, the slopes of the lines you have drawn represent the densities of the metals you have examined! On your graph (next to each line) write down the density of each metal. Work with one set of pennies at a time, either pre-1982 or post 1983 pennies. Dec 08, 2015 · 08 Density of Pennies Lab (Exhibition #1) 08 Density of Pennies Graph 08 Density of Pennies Graphing Instructions 02a Accuracy vs. Do not wash the pennies prior to weighing! They must be weighed as is and certainly can not be wet!!! Record the mass to the fourth decimal place ( 0. Lesson Plans on Density for Middle School Teachers Wet goes up must come down lab data sheet Page 22 Lesson 4 Density is in the Air by graphs and describe the The overall goal of this lab was to make a calibration curve with a plot of absorbance vs. This lab was a controlled experiment because we only changed one variable which was the side of the . However, this is not the main Density lesson plan - an intuitive fun way to teach density Balancing chemical equations lesson plan - how to teach balancing chemical equations using an online game Graphing points on the xy coordinate plane - A fun online tutorial and game to teach graphing (x,y) points on the coordinate plane @radicalnumber @desmos used for exploring vertex form of a quadratic, students liked seeing how a,h, and k values effect the graph. doc 9. 1 Quarter. period number for each element. 6 percent zinc and only 2. a) Graph this data on one graph. Very corroded or scratched pennies have been removed. The cohesion and surface tension of water becomes apparent when the drops of water you add to the penny reach the penny’s edge. 0 g/cc. Consider the following graph: a) By looking at the graph, which sample was the least dense? b) Calculate the density of each sample. Set up a graph. 07 g 101. Print out a copy of the graph to include in your lab report. concentration, and be able to determine the phosphate concentrations in samples of cola, surface water, and other aqueous solutions of interest. “How Many Drops Can Fit on a Penny?” Lab The purpose of this lab is to see the steps of the scientific method in action. • Density is a principle that is found in many of Earth’s processes, including the water cycle. What pennies are denser (pre- or post-1982 pennies)? The experimental density of pre-1982 pennies and post-1982 pennies Graph: Using the volume of the pennies and the actual mass of the pennies, create a graph of your data. Find the mass of 5 pennies from one set. 01). Graduated cylinder, 50-mL 25 post-1983 pennies . Part A: Density of water The density of water was determined to be 0. 1837 to 1857. VOLUME GRAPHS On these graphs, the axes represent the following: Y axis ² represents MASS on MASS VS. Prior to 1982 pennies were nearly 100% copper. usmint. Overview • First, determine the linear mass density of the string directly (Pre-Lab). data; the other uses collaboration data. The zinc (which was already silver) coated the penny. 2 0. If the water in this experiment did not boil at 100°C, what could be the reason? 3 Pennies. Developing the method for determine the percent of density for the solution. 43 g Sep 02, 2016 · In today’s lab, you will determine whether or not there are more than one kind of U. Experimental: The procedure of this lab was obtained from the student’s laboratory course website or manual. DENSITY OF PENNIES LAB. 1. Record observations about the system. Nov 10, 2011 · The slope was 6. To do this, choose any two points on the line and do rise/run. density of some metals Graph Paper: Lab Freezing Point Depression and Molar Mass Safety Lab : Titration: Density of Water : Lab Heat of Combustion: Density of Pennies: Lab Flame Test: Density of Sand: Lab Molar Mass : Copper Silver Gold: Lab Solubility Curve of Potassium Nitrate: Heating and Cooling Curves : Lab Predicting Precipitation Reactions: Specific Heat. Data Table 1 Trial Mass of 10 pennies made before 1982 Mass of 10 pennies made after 1982 1 123. Repeat step 2, each time adding 5 more pennies until you have used all 35 pennies. 0 to 2. Nov 09, 2014 · Determining The Percent Copper and Zinc in Pennies From Density Purpose: Practicing determine the density of the solution. A brief History of the US (one-cent coin) Penny Composition. Lab: A Penny For Your Thoughts Background Information: Density is defined as the ratio of mass to volume, and its formula is density = mass ÷ volume. Physical properties include color, size, density and hardness. If we assumed we were trying to measure the density of pure copper pennies, then including pennies minted after 1982 in the measurements would amount to Start studying Lab 2: Density of Pennies. 9833g/mL defined as the rate of density of water. It is appreciated if credit is given when these materials are reproduced or published in any way. 1 but the density of the copper is 8. 01 g mass of pennies - 55. 5897 g 10mL 0. 96g/mL. The volume measurements had 1 significant figure. 0101 g Mass of Cylinder + Alcohol Mass of Alcohol Volume of Alcohol Density 96. 7851 1-butanol 0. To use density to determine an unknown metal. 14 g/cm 3). name, date, partner’s names) Background info (from notes, etc. Each group will pick 20 pennies out of the pool. Write an analysis paragraph describing your graphed data sets. 96 g/mL and the density of zinc is only 7. Provide an example of an experiment designed to address a specific hypothesis. 2989. your . Inferences = write . 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 than either of the other two liquids. Record the mass of the penny. 13 grams. Summary: Students will change surface tension of water using liquid dish soap and measure the change through the number of drops of water that will fit onto the head of a penny. View Lab Report - penny lab density graph - Fabio Soares from MATH 301 at Bethel College. and analyzing data using histograms, bar graphs, circle graphs, line graphs In this lab we will be measuring density in a variety of ways through a comparison. Density Lab Materials: One 25, one 50, and one 100ml graduated cylinder Tray with samples of: aluminum, steel, lead, zinc, copper, brass and at least pennies Beaker of salt water Procedural information:  When measuring mass of a metal sample, make sure the metal is dry before massing o Make sure grams (g) are the expressed units on the balance o d) Determine the mass of a penny in grams by balancing a stack of 10 (or more) pennies with a known mass on the “teeter-totter”. VOLUME GRAPHS Slope of a line : refers to the ´VWHHSQHVVµ o f a line ( VLPLODUWRWKH´VWHHSQHVVµRID hill/mountain ) The cohesion and surface tension of water becomes apparent when the drops of water you add to the penny reach the penny’s edge. Feb 23, 2014 · If we use these values to calculate the density of a penny, we get:$$\rho = {4m\over t\pi D^2} = {4\times 2. Nov 29, 2016 · Repeat this process with both partners taking turns flipping pennies starting with 15, 20, 25, 30, 35, and 40 pennies Record your data in the data table below. 1-1 Beverage Density Lab Report. Density is defined as the quantity of matter in a given unit of volume. 0 g/cc for a very old one. 9 Jan 2019 A photograph shows a copper penny: ONE CENT, United States of America. 528 41. Lab To do this, choose any two points on the line and do rise/run. 0mL. After 1983, the US Mint changed the composition of the penny to be 97. Pre-AP Chemistry 4323. PROCEDURE 1. Jun 25, 2015 · Hold the medicine dropper just above the top of the penny (not touching it) so each new drop has to fall a short distance before it merges with the drop on the penny. This lab introduces the concept of density and uses it to distinguish between pennies minted in different years. 4 percent copper. 16 2. To do this put the density before sinking (in grams per cm³) on the y-axis and make a bar for each of the boats (on the x-axis). 8644 g 22. 3 SCIENTIFIC METHOD The Penny Drop Lab Introduction: Which side of a penny will hold more drops of water before spilling over on to a paper towel? OBJECTIVE: In this activity, you will use the scientific method of inquiry to perform a This lab is one that I wrote using an old favorite (drops of liquid on a penny) and trying to find a way to test viscosity simply. 3 Drawing Conclusions 9. Precision A reminder of scientific Lab 1 - Density Determinations and Various Methods to Measure Volume Goal and Overview This lab provides an introduction to the concept and applications of density measurements. density. 152cm)\pi(1. Observe penny then place on paper towel on flat surface. Dry penny and repeat steps 1-4 FOUR MORE TIMES. Earth and space science is a study of the history of the earth, its life recorded in rocks, and the celestial bodies. What metal are those pennies mostly made of? _____ Can you determine if a penny was minted before or after 1982 if you know only its mass? UNIT 2-A TOOLKIT AN INTERACTIVE VIDEO SERIES FROM GEORGIA PUBLIC BROADCASTING Post-lab Questions: 1. 23 Feb 2014 The lesson also offers an opportunity to study various types of charts What must you measure in order to determine the density of a penny? result of an entire experiment depends on the phase of the moon (not usually, but  Experiment 2B: Density of a Penny. 5 percent copper and 97. Record the mass in the table below. the number of drops that fit on penny will surprise you. pdf), Text File (. Lemon juice has a similar pH of 1. Add 5 more pennies to the first group and obtain the mass of these 10 pennies. Density, an intensive (or intrinsic) property, is a kind of "heaviness" factor. Procedure: #3 Materials 2. 94933g/mL for 10. Measurement by more than one method reduces bias and systematic errors in answers that are found in common. 96 g/mL. Add about 25 mL of 4 M HCl to the beaker. 001 g. ) The accepted density of post-1982 pennies is 7. • For an object to float, relative to its surroundings, it must be less dense than its surroundings. This chart is a variation of a Histogram that uses kernel smoothing to plot values, allowing for smoother distributions by smoothing out the noise. Compare the densities of pennies minted prior to 1982 and pennies minted after 1982. 5% zinc) Then have the students test other items in the class (rings, necklaces) to see how close to pure they are. chem LAB: DENSITY OF A PENNY Purpose: Determine the densities of pennies which date from 1983 and later and of pennies from 1981 and earlier. Lab b. Place an empty weigh boat on a top-loading balance. 4 Dimes, 5 Pennies. 75897g/mL 104. Composition. Using this information, explain, IN WORDS, why a penny made before 1982 will have a greater mass than a penny made after 1982. Safety: Be careful when working with electrical equipment around water so that you do not get shocked. When pennies were placed in the cylinder containing water, the increase in liquid level accounted for the displaced amount of water or the amount necessary to evaluate the density of the penny given the mass of a couple of pennies for each of five recorded sets… The year before the penny changed the average mass was 3. Your lab report should include the experimental and actual values. 100% Cu. Record the mass in the appropriate data table below. Density of Pennies (Trial 1, pre-1982 pennies) 58. Typically, densities are reported g/ml or g/cm 3 (which are equivalent because 1ml ≡ 1cm 3). PENNY LAB – Page 5. SECTION: Lab: Comparing the Density of Pennies . ) Objective (no hypothesis) Due Friday (You can start the procedure if you want!) Title Your lab report should be titled with a title of your choosing. Description. If we assumed we were trying to measure the density of pure copper pennies, then including pennies minted after 1982 in the measurements would amount to Before 1982, pennies were made of a copper alloy. 14g/ml. 1262 g 20mL 0. 5 10. The answers may be Feb 23, 2014 · Pennies minted prior to 1982 should have a density almost the same as pure copper (8. 98756g/mL for 50. Weigh the mass of the pennies on the mass machine, and record results. 13g/ml. (Other variables could be-year/condition of the penny, dirty/clean penny, design on the penny) #5. On a graph, plot the average density vs. As it is easy to see, the ingredient that had the greatest impact was vinegar with salt, and the one who had the lower impact was water. Feb 23, 2014 · Pennies minted prior to 1982 should have a density almost the same as pure copper (8. Is the density you found for the pre-1982 pennies similar to the density of copper? Explain why there might be differences. You can make a graph by hand or use a website like Create a Graph to make a graph on the computer and print it. Don’t forget your units! Densities Silicon Tin Lead Sample 1 Sample 2 Sample 3 Average 2. They are possibly made from copper because the density of copper is 8. You can message your instructor within the curriculum, or you can call into the LUOA office at 1-866-418-8741 option 4 (teacher), option 3 (science). You can write down the number NOTE: You can also give the students a chance to try this demo again after they have completed the penny lab. Then, in 1982 the Mint introduced a penny that is 97. SNEAK PEAK inside … Advance Preparation. 002 From the graph, determine the densities of the pre- and post-1982 pennies. 50g\over (0. (2) Drops on a Penny lab Introduction - I pass out the lab materials and safety goggles. Finally, compare these two kinds of pennies and explained the difference in their densities. Determining Density Through Graphing: Using your graph, determine the mass of 10. Does your graph show a gradual increase or decrease of the mass with age? By determining the density of each type of pennies, the composition of the metal can be confirmed. Based on their density, determine the metals used in pre-1982 and post-1982 pennies. Be careful to choose the proper chart type (XY Scatter). 5 percent zinc. Using a metric ruler and the chart below, determine the volume of the cube and record it in  CSUS – CH1E. Experimentally, mass and volume measurements are required to calculate density. Make a neat table and graph. 3 g/mL. increased number of substrates to start). Pre-1982 Pennies volume (ml) mass (g) 1. 96 grams, while the mass of the same amount of zinc is 7. mass of substance = density × volume of substance . plot function to graph the data. 75631g/mL 111. Pennies now are about 97. 92 g/cm3. For example, if we graph the following experimental data: Mass (g) Volume (mL) 10. 349 = 7. 1347. 3, it fluctuated in 1982 between 10. 49/ 0. e. Find Volume of regular solids. 92g/ml. the pennies into the graduated cylinder, remember to gently tap the sides to free any trapped air bubbles. Density is defined as mass per unit volume. 07 g/mL. VOLUME GRAPHS X axis - represents VOLUME on MASS VS. densities. Make a bar graph of the density of each hull before sinking. Activity. c) What mass of salt water had a volume of 55 mL? d) What volume of alcohol had a mass of Determining Density Through Graphing: Using your graph, determine the mass of 10. Density is figured out by measuring the mass and volume of a substance and then dividing the two. Density and Graphs. Label your columns. 2, your value of ∆V, and assuming that ∆m is ±0. 1 until 1983 where all the pennies began being made to the average mass 2. The density of an object can be determined from the mass and volume of that object. graph. Due to traveling classrooms, some students performed this lab prior to the Evaporation of Alcohols lab, others perform this experiment first. If you have a series of data, you can plot the mass vs the volume and the slope of the resultant graph will give you the density. b. Surface Tension: Liquids Stick Together Teacher Version In this lab you will learn about properties of liquids, specifically cohesion, adhesion, and surface tension. The densities of brass and aluminum will be calculated from mass and volume measurements. Record number of drop as Trial 1 in data chart. 43 g Density of post-1982 penny = 7. The handouts and PowerPoint presentations below are resources to be used by any/all students and educators. Place the beakers in the fume hood until class the next day. gov), pennies minted before 1982 are made of copper. 8543 g 30mL 0. 5-2. Record the mass in Table 1. rounded to 7. As you learned from the “Hollow Penny” activity, pennies minted before 1982 are pure copper. Copper is heavier than zinc. Purpose: In this lab, you will calculate the density of sets of pennies minted before 1982 and after 1983 to identify which metals they contain. Mass can be measured with a balance, where as volume can be measured with a graduated cylinder. TL;DR (Too Long; Didn't Read) Density can range from 7. Find the mass of 5 pennies. Sample Traditional Lab Report - Density of Pennies Hypothesis (Based on the instructions provided) The density of pennies made before 1982 will be greater than the density of pennies made after 1982. 7 2. Fairly new pennies have a density of 7. Aims. PURPOSE To determine the densities of pennies minted before 1982 and after 1983. Coin Opp Recommended for you Density Lab Today’s penny is quite different from the penny a decade ago. 15 grams per cubic centimeter (g/cc), though very old ones can be as high as 9. 3 g/mL density of pennies Conclusion: In this lab, the pre-1982 pennies had an average density of 6. , pl. 5 when compared to the normal human stomach after food has been consumed. Penny Density Lab: Formal Lab Report Support Sheet *WARNING: This sheet is designed to help students avoid common mistakes and errors when writing the formal lab report for the Penny Density Lab. Background. Penny Density Lab Required sections: Header Title Purpose Procedure Data Graph Calculations Questions Conclusion Background Information: Pennies minted before 1982 are composed of 95 percent copper and 5 percent zinc. Record the mass. Materials: Pre-1982 and post-1983 pennies, a 50 mL graduated cylinder, a beaker of water, a balance and a calculator. Make a 2-column table in Excel for your data, with the number of pennies in the left column and the mass in the right. Dip one penny in your salt/vinegar mixture and place it on a dry pad or paper towel. The most common reasons for density errors include using the wrong or inaccurate instruments and not accounting for temperature changes. To obtain the graphs shown below, three pennies from each year 1-10 According to page 9 of your text, the density of copper is 8. down what you can figure out from your graphs. It stayed steady at 3. Some details How can you determine the volume of a penny? Displacement Calculate the density of 2, 3, …10 pre-1982 pennies, and 2, 3, …10 post-1982 pennies. Penny Set B was minted after 1982. Graph Paper: Lab Freezing Point Depression and Molar Mass Safety Lab : Titration: Density of Water : Lab Heat of Combustion: Density of Pennies: Lab Flame Test: Density of Sand: Lab Molar Mass : Copper Silver Gold: Lab Solubility Curve of Potassium Nitrate: Heating and Cooling Curves : Lab Predicting Precipitation Reactions: Specific Heat. 2 Creating Graphs 9. Be sure to use the proper number of decimal places. Note: maximize the size of your graph Surface tension refers to water's ability to stick to itself. Summarize background in own words. Lab focusing on the density of pennies  Experiment 2: A Penny for Your Thought; Scientific Method Introduction. Work with one set of pennies at a time, either pre-1982 or post-1983. density do . The conclusions were derived and the hypothesis was refuted after calculating the density from the results on the experiments conducted. 52 5. calculate the linear mass density of the string. 5g/ml. or IS it? Complete the following activity to compare the mass of pennies. If the pennies are wet, dry them with a paper towel. Date performed: Name: Lab Partner: Penny Density Lab. Introduction: Info on density and using graphing to find density, volume by water displacement, context of pennies . Preparing a graph. Step 1: Rinse a penny in tap water and dry completely. 5 mL volume of water + pennies 22. 08 g 101. Oct 15, 2014 · A penny is a penny is a penny is a penny…. Note that this lab involves making a graph, and it should be handed in as part of the So the penny densities were changed and their reaction to HCl changed. Prepare the graphs as discussed below, and when you are finished, paste a copy in your notebook and have them graded before you leave the lab. Weigh Boat Sep 02, 2016 · 5 modern Lincoln cents worth over \$1,000 that can be found in pocket change! - Duration: 10:01. I also take this opportunity to begin graphing introduction by creating a double bar graph of each trial. T. In this experiment you will determine the density of several liquids and compare the physical. We tried to keep all other variables like water temperature, dropper height etc. 3 Density of Pennies Lab. You will then get results and make conclusions based on the results. 3 g, what is this substance's density (in grams per milliliter)?. Show work. Drop one penny at The graph analyzed all of the data into a line graph using both mass and volume. 5 33. 61 may place the pennies directly on the metal platform. The cost of copper has been on the rise during the past couple of decades. 3g/ml. Plot the pre-1983 data and post-1982 data as two separate series. (The lid keeps the vinegar from drying out. Measure the mass of each of the 6 pennies. 3 Characteristics of Living Things Reading. each number. Ask students if they can hear a difference. In macroscopic terms, density reflects how much mass is packed into a given three-dimensional space. ) Put one penny on a dry pad or paper towel. Once this is done, find the linear regression that best fits the How to write a lab report! The Density of Pennies PowerPoint Yay! Write a Lab Report Title (incl. This is an easy, fun and colorful science project that illustrates the concept of density. Data. Using the mass and volume data, calculate the density of each sample 1 – 3 for all three elements. For each penny, calculate the deviation from the average. [density = mass/ volume ] so 2. Title and heading . Equipment: Materials:_____ Electronic Balance Pennies (10 pre-1982 and 10 post-1982) Graduated Cylinder (100mL) Water. Goggles are required. A Density Plot visualises the distribution of data over a continuous interval or time period. the rate of reaction) changes in response to the increased number of pennies to start (i. EQUIPMENT MATERIALS Balance 25 pre-1982 pennies . MATERIALS: penny thoroughly and determine its mass on the balance. Graph your data sets. have them sketch and label the graphs. 4916 2-propanol 0. Apr 06, 2018 · Teaches how to freeze a column and row while viewing, wrap text in a cell, make a scatter plot with specific variables on the x and y axis, insert a trend line and show the slope equation of that As you learned from the “Hollow Penny” activity, pennies minted before 1982 are pure copper. 00 g/mL. 17 grams per milliliter. You will want to graph how the number of pennies flipped per second (i. Jan 13, 2020 · You can make a density column—also known as a density tower—with many liquid layers using common household liquids. Occasionally the US Department of Treasury changes the composition of pennies, which changes the overall mass and density of each coin. Then, calculate the average density. What physical property of these pennies does the slope of each line represent? 2. Be sure to hold the eyedropper straight up and down. 3 Aug 31, 2015 · Put one penny on the wet pad and cover with the lid. 0g/ml, there for since the result from the conducted experiment were of 6. 9. The average density of a penny before the change was 10. 76181g/mL 119. Pennies are just so small! In the Drops on a Penny experiment, though, you'll  For PES 1150 ONLY: You do NOT need to type your answers into the document, but can hand measurements will be performed to find the density of a penny. 5 23. using graphs. The identity of The purpose of this lab is to learn how to create and interpret graphs. penny density lab graph