Heating Curve

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 increases.

Front

What happens to the temperature of a substance during the melting process?

Back

The temperature remains constant during melting, as the heat energy is used to change the state from solid to liquid.

Front

What is the heat of fusion?

Back

The heat of fusion is the amount of energy required to change a substance from solid to liquid at its melting point.

Front

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

Back

Segment A-B represents the solid state of the substance, where the temperature is increasing.

Front

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

Back

Segment B-C represents the phase change from solid to liquid, known as melting.

Front

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

Back

Segment C-D represents the liquid state of the substance, where the temperature is increasing.

Front

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

Back

Segment D-E represents the phase change from liquid to gas, known as boiling.

Front

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

Back

Segment E-F represents the gas state of the substance, where the temperature is increasing.

Front

Which segment of the heating curve indicates the substance is in a liquid state?

Back

Segments C-D and D-E indicate the substance is in a liquid state.

Front

What is the longest process in a heating curve?

Back

The boiling process is the longest, as it requires more energy to change from liquid to gas.