1. Density of Pennies

2. How to Start your Lab Report
Chemistry Name________________ Experiment Number #3 Section_____Date_____ Density of Pennies Name(s) of Lab Partner(s)

3. Objective:
To find the density of pennies minted before 1982 and after 1983 to determine the metal in the cores of pennies minted after 1983

4. Procedure
1. Work with one set of pennies- either pre or post-1983
2. Find the mass of 5 pennies
3. Find the mass of 10, 15, 20 and 25 pennies
4. Fill a 50 mL graduated cylinder to the 20 mL mark with water

5. 5. Add 5 pennies and record the volume
6. Continue to find the volume 10, 15, 20, and 25 pennies.
7. Repeat using the other set of pennies.

6. Data Mass (g) 5 10 15 20 25 _______Pennies # of pennies
Total volume in cylinder (mL)
Volume of pennies (mL) 5 10 15 20 25

7. Conclusion
We found that the US Mint changed what pennies were made of in Before 1982, pennies had a density of about _________ and they were made of ________. After 1983, pennies had a density of about ______ and they were made of _______. The US Mint changed what pennies were made of because ___________________________.
(1 more sentence- accuracy)