1. Section 3.4 Density

2. Density is the ratio of mass to its volume
D = mass
volume

3. Look at Table 3.6 on page 68.
How does the density change as the volume decrease?
Density is characteristic physical property.

4. Look at Table 3.7 page 69.
What do you think will happen if glycerine and corn oil are poured into a beaker?
Why does a helium balloon fly away outside and my kids bawl?
What would a CO2 balloon do?

5. Specific Gravity
Comparison of the density of a substance with density of water.
Specific Gravity = density of sub (g/cm3)
density of water (g/cm3)