Front

What happens to the molecules of a substance when heat is added?

Back

The molecules of a substance spread out into a new arrangement.

Front

Why is metal a good material for frying pans?

Back

Metal is a good conductor of heat and transfers heat from the stove to the food.

Front

What happens to milk when it is put in the freezer?

Back

The milk freezes and becomes a solid.

Front

What occurs when heat is removed from a substance?

Back

The substance condenses.

Front

What change occurs when water is boiled?

Back

A liquid is changing into a gas.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases).

Front

What is radiation?

Back

Radiation is the transfer of heat through electromagnetic waves.

Front

What is the boiling point of water?

Back

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at sea level.

Front

What is freezing?

Back

Freezing is the process of a liquid turning into a solid when its temperature decreases.