Density

Front

What is mass?

Back

The amount of matter in an object.

Front

What is the equation to find density?

Back

Density = Mass / Volume (D = M/V)

Front

If the mass of a substance is 450 kg and its volume is 50 cubic meters, what is its density?

Back

9 kg/m^3

Front

If the density of a substance is 25 g/cm^3 and its volume is 4 cubic centimeters, what is its mass?

Back

100 g

Front

Why is a hot air balloon able to rise into the sky?

Back

The hot air is less dense than the atmosphere, so it rises.

Front

What is the unit of density in the metric system?

Back

Kilograms per cubic meter (kg/m^3) or grams per cubic centimeter (g/cm^3).

Front

How does temperature affect the density of a substance?

Back

Generally, as temperature increases, density decreases because substances expand.

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.

Front

What is the density of water?

Back

1 g/cm^3 or 1000 kg/m^3.

Front

How can you determine if an object will sink or float in water?

Back

If the object's density is greater than 1 g/cm^3, it will sink; if less, it will float.