1. Density is the ratio of the mass of an object to its volume.
3.4
Determining Density
Density is the ratio of the mass of an object to its volume.

2. 3.4
Determining Density
Each of these 10-g samples has a different volume because the densities vary.
A 10-g sample of pure water has less volume than 10 g of lithium, but more volume than 10 g of lead. The faces of the cubes are shown actual size. Inferring Which substance has the highest ratio of mass to volume?

3. 3.4
Determining Density
Density is an intensive property that depends only on the composition of a substance, not on the size of the sample.

4. Intensive property is a property that depends on
Intensive property is a property that depends on the type of matter in a sample, not the amount of matter.

5. Rank materials according to their densities.
Determining Density
Simulation 1
Rank materials according to their densities.

6. Density and Temperature
3.4
Density and Temperature
Experiments show that the volume of most substances increases as the temperature increases. Meanwhile, the mass remains the same. Thus, the density must change.
The density of a substance generally decreases as its temperature increases.

7. 3.10

8. 3.10

9. 3.10

10. for Sample Problem 3.10

11. 3.11

12. 3.11

13. 3.11

14. for Sample Problem 3.11