Heating & Cooling Curve/PE/Phase Diagrams

Front

What is the boiling point of a substance?

Back

The temperature at which a substance changes from liquid to gas. For example, the boiling point of water is 100 °C.

Front

What segment of the heating and cooling curve represents both melting and freezing?

Back

Segment BC represents both melting and freezing.

Front

What segment of the heating and cooling curve represents a time when both solid and liquid phases are present?

Back

Segment BC represents a time when both solid and liquid phases are present.

Front

What is the term for the temperature and pressure conditions at which the solid, liquid, and gas phases of a substance exist at the same time?

Back

Triple point.

Front

What segment of the heating and cooling curve represents a time when both liquid and gas phases are present?

Back

Segment DE represents a time when both liquid and gas phases are present.

Front

Define the term 'melting point'.

Back

The temperature at which a solid becomes a liquid.

Front

Define the term 'freezing point'.

Back

The temperature at which a liquid becomes a solid.

Front

What is a phase diagram?

Back

A graphical representation showing the phases of a substance at different temperatures and pressures.

Front

What does segment AB of the heating and cooling curve represent?

Back

Segment AB represents the solid phase of a substance.

Front

What does segment EF of the heating and cooling curve represent?

Back

Segment EF represents the gas phase of a substance.