1. Mass, Weight, and Density Density is mass per unit of volume. M D = ------- V

2. Volume For a rectangular solid: V = LWH For a cylinder: V = πr 2 h For an irregular solid: ???

3. Volume How are we going to find the volume of an irregular solid?

4. Volume

6. Lab # 2 Using Density to Find the Thickness of a Wire

7. Lab # 2 Part 1: Find the density of copper. M D = ------- V

8. Lab # 2 Part 2: Using the density, find the volume of a sample of copper wire. M V = ------- D

9. Homework Read ChemLab 2 (pp 46-47) Answer the Pre-Lab questions

10. Today: Collect raw data Graph mass vs. volume Tomorrow: Do the math Answer discussion questions 3 and 6