Calculating 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

How do you calculate density?

Back

Density = Mass / Volume.

Front

What is the unit of density for solids and liquids?

Back

The unit of density for solids and liquids is typically grams per cubic centimeter (g/cm³) or grams per milliliter (g/mL).

Front

If an object has a mass of 20g and a volume of 4cm³, what is its density?

Back

Density = 20g / 4cm³ = 5 g/cm³.

Front

What happens to an object with a density less than 1 g/cm³ when placed in water?

Back

It will float.

Front

What happens to an object with a density greater than 1 g/cm³ when placed in water?

Back

It will sink.

Front

Why do helium balloons rise in the air?

Back

Helium balloons rise because helium is less dense than the surrounding air.

Front

What is the density of water?

Back

The density of water is approximately 1 g/cm³.

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.

Front

What is the relationship between density and buoyancy?

Back

An object will float if it is less dense than the fluid it is in, and sink if it is more dense.