Density

Front

What is density?

Back

Density is the mass of an object divided by its volume, usually expressed in grams per cubic centimeter (g/cm³) or grams per milliliter (g/mL).

Front

Why do ice cubes float in water?

Back

Ice cubes float in water because they are less dense than water.

Front

What are the units of measurement for density?

Back

The correct units for density are grams per cubic centimeter (g/cm³) or grams per milliliter (g/mL).

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

If an object has a mass of 10g and a volume of 2cm³, what is its density?

Back

Density = 10g / 2cm³ = 5 g/cm³.

Front

What is the density of water?

Back

The density of water is 1 g/cm³.

Front

Which will float on water: an object with a density of 0.5 g/cm³ or 1.5 g/cm³?

Back

An object with a density of 0.5 g/cm³ will float on water.

Front

What happens to the density of a substance when it is heated?

Back

Generally, the density of a substance decreases when it is heated because its volume increases.

Front

What is the density of a liquid with a mass of 27g and a volume of 30mL?

Back

Density = 27g / 30mL = 0.9 g/mL.

Front

If a rock has a mass of 14g and a volume of 2cm³, what is its density?

Back

Density = 14g / 2cm³ = 7 g/cm³.