Density Question• If I have a wooden block that
has a mass of 20g and a volume of 26cm3. What is its density? What happens to the density of that block of wood if you cut it in half?
1
WOODBLOCK
WOOD BLOCK
Mass = 20gVolume 26cm3
Density = 0.77g/cm3
WOODBLOCK
TWO WOOD BLOCKS
WOODBLOCK
Cut in half
2
WOODBLOCK
WOOD BLOCK
Mass = 20gVolume 26cm3
Density = 0.77g/cm3
WOODBLOCK
TWO WOOD BLOCKS
WOODBLOCK
Mass = ???Volume ?????
Mass = ???Volume ?????
Cut in half
3
WOODBLOCK
WOOD BLOCK
Mass = 20gVolume 26cm3
Density = 0.77g/cm3
WOODBLOCK
TWO WOOD BLOCKS
WOODBLOCK
Mass = 10gVolume 13cm3
Mass = 10gVolume 13cm3
Cut in half
4
WOODBLOCK
WOOD BLOCK
Mass = 20gVolume 26cm3
Density = 0.77g/cm3
WOODBLOCK
TWO WOOD BLOCKS
WOODBLOCK
Mass = 10gVolume 13cm3
Mass = 10gVolume 13cm3
Cut in half
Density = 0.77g/cm3 Density = 0.77g/cm3
5
WOODBLOCK
WOOD BLOCK
Mass = 20gVolume 26cm3
Density = 0.77g/cm3
WOODBLOCK
TWO WOOD BLOCKS
WOODBLOCK
Mass = 10gVolume 13cm3
Mass = 10gVolume 13cm3
Cut in half
Density = 0.77g/cm3 Density = 0.77g/cm3
What Happens if I cut one of the small wooden blocks in half again?
6
WOODBLOCK
WOOD BLOCK
Mass = 20gVolume 26cm3
Density = 0.77g/cm3
WOODBLOCK
TWO WOOD BLOCKS
WOODBLOCK
Mass = 10gVolume 13cm3
Mass = 10gVolume 13cm3
Cut in half
Density = 0.77g/cm3 Density = 0.77g/cm3
What Happens if I cut one of the small wooden blocks in half again?
WOODBLOCK
WOODBLOCK
Mass = ???Volume = ???Density = ???
7
• 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/cm3
