#40 Density

Front

What is the formula for Density?

Back

Density = Mass / Volume

Front

What is the relationship between mass, volume, and density?

Back

Mass = Density x Volume

Front

Why does ice float in water?

Back

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

Front

How do you calculate the density of an object?

Back

Density = Mass / Volume

Front

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

Back

Generally, the density decreases as the substance expands when heated.

Front

What is the density of water at 4°C?

Back

1 g/cm³

Front

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

Back

Density = 20 g / 5 cm³ = 4 g/cm³

Front

Why do helium balloons rise in the air?

Back

Helium balloons rise because helium is less dense than air.

Front

What is the unit of density in the metric system?

Back

g/cm³ or kg/m³

Front

If a substance has a density of 2 g/cm³, what does this mean?

Back

It means that 1 cm³ of the substance has a mass of 2 grams.