Density Unit 2 Review

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

• mass and volume

• volume and weight

• mass 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.

• float

• sink

• neither

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

• 150 g/mL

• 25 g/mL

• 6 g/mL

• 35 g/mL

Which one of the following statements is correct?

• Object A is more dense than Liquid 1.

• Object C is more dense than Liquid 2.

• Object B is more dense than Liquid 2.

• Object C is less dense than Object B.

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

• Solid A

• Solid B

• Solid C

• Solid B and C

The table provides identifies of substances based on density. A sample of an unknown substance has a mass of 28.8 grams and a volume of 4 cm3. Based on its density, it could be which of the following substances?

• gold

• lead

• iron

• tin

In a density column, the most dense liquids go where?

• Middle

• Top

• Bottom

All of the following are physical properties (EXCEPT)

• solubility

• melting point

• reactivity with acid

• density

Mystery metal #5 has a density of 7.31 g/cm^3. Where would it fall in the density column?

• Right below gold.

• Above brass, lead and gold but below tin.

• Between lead and gold

• Above tin

You measure the mass and volume of a sample. Then you decide to take that sample and double its mass. (Assuming density is the same) how will this affect the volume?

• The new volume would be half as much as the original volume. 

• The new volume would be the same as the original volume. 

• The new volume would be twice as much as the original volume. 

• The new volume would be 1/4 of the original volume.