Density

1
Density

• Where Mass meets Volume

2

• What to Know
• How do I convert units in Density Problems?

Conversion Examples
1000 g 1 kg 1500 g ______ kg b. 0.045 kg ______ g
1000 mg 1 g 1740 mg ______ g b. 0.115 g ______ mg
mL 1 L a. 150 mL ______ L b. 4 L ______ m
1 cm3 1 mL 10 cm3 ______ mL b. 45 mL ______ cm3
3

• BRAINSTORM
• Where have you heard the word density before?

4
The Official Definition

• The amount of mass in a certain unit of volume of
  a substance

So density is quite simple to figure out the
density all we need is the mass of an object and
its volume
5
Density Problems

• If we want to calculate the density of an object
  all we need is the mass and the volume
• Our Formula is
• d
• Units for Density
• solids (g/cm3) liquids (g/mL)

6
Density Problems

• A box has a mass of 170 g and a volume of 20 cm3.
  Calculate the density of the box.

7
Density Problems

• The mass of water in a glass is 355 g and has a
  volume of 355 mL. Calculate the density of the
  water.

8
Density Problems

• The mass of a softball is 12 g and the softball
  has a density of 2 g/cm3. What is the volume of
  the softball?

9
Density Problems

• An aquarium has the dimensions of 10cm by 20cm by
  5cm. The density of water is 1.00 g/mL.
  Calculate the mass of water in the aquarium.