1. If I have a wooden block that has a mass of 20g and a volume of 26cm 3. What is its density? What happens to the density of that block of wood if you cut it in half? 1

2. WOOD BLOCK WOOD BLOCK Mass = 20g Volume 26cm 3 Density = 0.77g/cm 3 WOOD BLOCK TWO WOOD BLOCKS WOOD BLOCK Cut in half 2

3. WOOD BLOCK WOOD BLOCK Mass = 20g Volume 26cm 3 Density = 0.77g/cm 3 WOOD BLOCK TWO WOOD BLOCKS WOOD BLOCK Mass = ??? Volume ????? Mass = ??? Volume ????? Cut in half 3

4. WOOD BLOCK WOOD BLOCK Mass = 20g Volume 26cm 3 Density = 0.77g/cm 3 WOOD BLOCK TWO WOOD BLOCKS WOOD BLOCK Mass = 10g Volume 13cm 3 Mass = 10g Volume 13cm 3 Cut in half 4

5. WOOD BLOCK WOOD BLOCK Mass = 20g Volume 26cm 3 Density = 0.77g/cm 3 WOOD BLOCK TWO WOOD BLOCKS WOOD BLOCK Mass = 10g Volume 13cm 3 Mass = 10g Volume 13cm 3 Cut in half Density = 0.77g/cm 3 5

6. WOOD BLOCK WOOD BLOCK Mass = 20g Volume 26cm 3 Density = 0.77g/cm 3 WOOD BLOCK TWO WOOD BLOCKS WOOD BLOCK Mass = 10g Volume 13cm 3 Mass = 10g Volume 13cm 3 Cut in half Density = 0.77g/cm 3 What Happens if I cut one of the small wooden blocks in half again? 6

7. WOOD BLOCK WOOD BLOCK Mass = 20g Volume 26cm 3 Density = 0.77g/cm 3 WOOD BLOCK TWO WOOD BLOCKS WOOD BLOCK Mass = 10g Volume 13cm 3 Mass = 10g Volume 13cm 3 Cut in half Density = 0.77g/cm 3 What Happens if I cut one of the small wooden blocks in half again? WOOD BLOCK WOOD BLOCK Mass = ??? Volume = ??? Density = ??? 7

8. Density does NOT depend on the amount of the substance you have. Regardless of whether you have a small piece of gold or a giant truck full of it, the density of gold will be 19.3g/cm 3