Density

The formula for density:

density = ________/volume

Density is defined as the mass per unit _____________.

The SI unit for density is ____________.

• cm³/g

• g/cm³

• m³/kg

• kg/m³

Find the density of an dumbbell that has a mass of 4 kg and a volume of 0.0025 m³.

Answer: ________ kg/m³

4000 kg of metal A has a density of 6200 kg/m³. Calculate its volume. (Give your answer in 3 s.f.)

Ans: __________ m³

What is the volume of Object X?

• 65.0 cm³

• 90.0 cm³

• 20.0 cm³

• 25.0 cm³

Three balls of different densities were placed into the liquids shown above. Which is the densest liquid?

• A

• B

• C

• D

Which box has a higher density?  

• Box A
• Box B
• cannot be determined
• they are the same

Why do ice cubes float in a glass of water?

• the ice cubes are more dense than the water

• the water is more dense than the ice cubes

• the ice cubes have the same density as water

• the ice cubes contract the water touching it

What is the density of the rock if it has a mass 75 g?

• 0.133 g/cm³

• 7.5 g/cm³

• 75.0 g/cm³

• 750 g/cm³