Heating and Cooling Curves

Front

What is a heating curve?

Back

A heating curve is a graph that shows the change in temperature of a substance as it is heated over time, illustrating phase changes such as melting and boiling.

Front

What is a cooling curve?

Back

A cooling curve is a graph that shows the change in temperature of a substance as it cools over time, illustrating phase changes such as freezing and condensation.

Front

What happens during segment DE of a cooling curve?

Back

Freezing occurs during segment DE of a cooling curve.

Front

In which region of a cooling curve does melting occur?

Back

No melting occurs on this graph.

Front

What is the melting point of a substance?

Back

The melting point is the temperature at which a solid becomes a liquid.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a liquid becomes a gas.

Front

True or false: During a phase change, temperature stays the same.

Back

True.

Front

What is the definition of volume?

Back

Volume is the amount of space that a substance occupies.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is condensation?

Back

Condensation is the process by which a gas turns into a liquid.