ch2 balance lab m

BALANCE LAB M NAME____________________PD_____

PURPOSE: learn to use the balance and graduated cylinders, and find the pattern in the pennies.

PROCEDURE:

1. watch balance demo

2. mass flask, beaker, old penny, new penny on the mechanical balance

3. mass objects on the electronic balance

4. read the volume of water in a small and in a large graduated cylinder

5. record class data

6. answer conclusion questions

TEAM DATA: year mechanical electronic volume

Flask X X

Beaker X X

Old penny X

New penny X

Small graduate X X X

Large graduate X X X

CLASS DATA: old penny new penny

Team year mass year mass

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CONCLUSION:

1. Using the class data, describe the pattern in the mass of the pennies. When did the pennies change?

2. How are mass and weight alike? How are they different?