Density and Thermal Expansion Quiz

What is the formula to calculate the density of a solid?

• density = mass x volume

• density = mass / volume

• density = mass + volume

• density = mass - volume

What is the formula to calculate the density of a substance?

• density = mass x volume

• density = mass / volume

• density = mass + volume

• density = mass - volume

Which property determines how closely packed the particles are in a substance?

• density

• volume

• temperature

• pressure

• mass

Which are possible units for density? (g=grams; m=meter; s=seconds; ml=milliliter)

• g/cm³

• m/g

• m/s²

• g/ml

• ml/g

A substance has a density of 15 g/cm³. If you have 45 grams of the substance, what volume does it occupy?

What happens to the density of a gas when its volume increases? Assume mass remains constant.

• The density of the gas decreases.

• The density of the gas becomes zero.

• The density of the gas increases.

• The density of the gas remains the same.

Copper pennies are mostly made of zinc (97%) with a thin outside layer of copper (3%). The density of zinc is 7.13 g/cm³. The density of copper is 9.0 g/cm³. The density of a penny should be ___.

• somewhere in the middle - about 8.0 g/cm³.

• close to 9.0 g/cm³.

• close to 7.13 g/cm³.

What is the density (g/ml) of the substance represented by the graph?

• 2

• 10

• 5

• 0.5

If you have a 20 ml sample of the substance represented by the graph what would be the mass of the sample (in grams)?

If you have a 30 g sample of the substance represented by the graph what would be the volume of the sample (in grams)?