1. Measuring Mass and Volume
WCHS Chemistry

2. Ways to Measure Mass Units = grams Measure to the .01 place!
Electronic Balance
ALWAYS:
Use the SAME balance for the WHOLE experiment!
“Tare” the balance before use!
Rules:
Do not press down on the balance
Chemicals DO NOT go directly on the pan
No hot objects on the pan of the balance
Leave the balance on
Do not use anything but your finger to push the buttons

3. Ways to Measure Mass Total Mass - Mass of Container = Mass of “Stuff”
Mass by Difference (example: salty beaker)
Total Mass - Mass of Container = Mass of “Stuff”

4. Ways to Measure Volume Liquids Use graduated cylinder (units = mL)
Read BOTTOM of meniscus
Measure to .01 place

5. Ways to Measure Volume KNOW: 1 mL = 1 cm3 Solids V = m/d
V Block = l*w*h
Irregular Solids
Volume by displacement
Final volume - Starting volume = Volume of object
KNOW: 1 mL = 1 cm3