Density Review

What two things must you know about a substance to calculate its density?

• mass and volume

• mass and weight

• volume and weight

• mass and gravity

Will an object that has a density of 3.4 g/cm3 float or sink in water? The density of water is 1.0 g/mL.

• sink

• float

• neither

The mass of a mystery liquid is 30g and its volume is 5mL. Calculate its density.

• 6 g/mL

• 150 g/mL

• 25 g/mL

• 35 g/mL

Which one of the following statements is correct?

• Object A is more dense than Liquid 1.

• Object B is more dense than Liquid 2.

• Object C is more dense than Liquid 2.

• Object C is less dense than Object B.

If you were told that Liquid 2 (the middle layer) was water, what would that tell you about the densities of Object B, Liquid 1 and Object A?

• The density of densities of Object B, Liquid 1 and Object A are more than 1.0 g/mL.

• You cannot predict density using the information given.

• The density of densities of Object B, Liquid 1 and Object A are less than 1.0 g/mL.

Which solid(s) from the Data Table would float on water?

• Solid A

• Solid B

• Solid C

• Solid B and C

Which solid(s) from the Data Table would sink in water?

• Solid A

• Solid B

• Solid C

• Solid B and C

Which solid from the table is the least dense?

• Solid A

• Solid B

• Solid C

Which solid from the table is the most dense?

• Solid A

• Solid B

• Solid C

The diagram below shows a tall beaker with four different liquids and their densities. If a ball that has a density of 1.73 g/cm3 is placed in the beaker, where will the ball come to rest?

• on top of liquid A

• between liquids B and C

• between liquids C and D

• on the bottom of the beaker