Density Comparison

Front

What is density?

Back

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

Front

How does density affect whether an object sinks or floats?

Back

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

Front

What is the density of water?

Back

The density of water is approximately 1 g/cm³ at 4°C.

Front

Why do helium balloons rise in air?

Back

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

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, as the substance expands.

Front

What is the relationship between mass and volume in density?

Back

Density is calculated by dividing mass by volume (Density = Mass/Volume).

Front

Why does ice float on water?

Back

Ice floats on water because solid water (ice) is less dense than liquid water.

Front

Which is denser: a pound of feathers or a pound of lead?

Back

They have the same mass (1 pound), but lead is much denser than feathers.

Front

How can you determine the density of an irregularly shaped object?

Back

You can determine the density by measuring its mass and its volume using water displacement.

Front

What is a common unit of density?

Back

Common units of density include grams per cubic centimeter (g/cm³) and kilograms per cubic meter (kg/m³).