1. 1-3 Density “Think About It” Which is heavier? Which is denser? Explain density in your own words. 1 pound

2. 1-3 Density 1.What is density? 2.How do you measure density? 3.How is accuracy & precision related to your measuring device & measurements? 4.How do you calculate density from measured data? 5.Is density an intensive or extensive property?

3. 1. What is density? Definition: Equation: Units:

4. Density: Will it sink OR will it float? SINKFLOAT

5. 2. How do you measure density? SOLIDLIQUID MASS VOLUME

6. 3. How is accuracy and precision related to your measuring device and measurements? Precision: Accuracy: –% Error

7. 4. How do you calculate density from measured data? What is the volume of a metal piece that has a mass of 3.25 g and a density of 1.82 g/mL? Round to 3 significant figures.

8. [Significant Figures] Captive zeros are significant. 2.004508 Leading zeros are NOT significant. 0.002210.000205 Trailing zeros are NOT significant unless there is a decimal in the number. 500500.0.20

9. Calculating Density

10. You have the same volume of A & B, but A’s density is larger. What do you know about their masses? You have the same mass of A & B, but A’s density is larger. What do you know about their volumes?

11. 5. Is density an intensive or extensive property? INTENSIVEEXTENSIVE