Density

Front

What is density?

Back

Density is a measure of how much mass is contained in a given volume. It is calculated using the formula: 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

What is the formula for calculating density?

Back

The formula for density is: density = mass / volume.

Front

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

Back

When a substance is heated, it usually expands, which can decrease its density.

Front

What is the relationship between density and buoyancy?

Back

An object will float in a fluid if it is less dense than the fluid. This is known as buoyancy.

Front

Which is denser: oil or water?

Back

Water is denser than oil, which is why oil floats on water.

Front

How do you calculate the density of an object?

Back

To calculate the density of an object, divide its mass (in grams) by its volume (in cubic centimeters).

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 the air?

Back

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

Front

If an object has a mass of 20 g and a volume of 5 cm³, what is its density?

Back

The density of the object is 4 g/cm³ (calculated as 20 g / 5 cm³).