Heating Curves

Front

What is a heating curve?

Back

A heating curve is a graphical representation of the temperature change of a substance as it is heated over time, showing the phase changes and temperature changes that occur.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature of a substance remains constant during a phase change, even though heat is being added or removed.

Front

What are the main segments of a heating curve?

Back

The main segments of a heating curve include: 1. Heating of solid (A-B), 2. Melting (B-C), 3. Heating of liquid (C-D), 4. Boiling (D-E), 5. Heating of gas (E-F).

Front

What does segment A-B represent in a heating curve?

Back

Segment A-B represents the heating of a solid, where the temperature of the solid increases as heat is added.

Front

What does segment B-C represent in a heating curve?

Back

Segment B-C represents the melting process, where the solid turns into a liquid at a constant temperature.

Front

What does segment C-D represent in a heating curve?

Back

Segment C-D represents the heating of a liquid, where the temperature of the liquid increases as heat is added.

Front

What does segment D-E represent in a heating curve?

Back

Segment D-E represents the boiling process, where the liquid turns into a gas at a constant temperature.

Front

What does segment E-F represent in a heating curve?

Back

Segment E-F represents the heating of a gas, where the temperature of the gas increases as heat is added.

Front

What is the melting point of a substance?

Back

The melting point of a substance is the temperature at which it changes from solid to liquid, and for the sample in the quiz, it is -60 ºC.

Front

What is the boiling point of a substance?

Back

The boiling point of a substance is the temperature at which it changes from liquid to gas.