intro to heating curve practice

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 and temperature changes.

Front

What happens to the temperature during phase changes?

Back

The temperature remains constant during phase changes, as energy is used to change the state of the substance rather than increase its temperature.

Front

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

Back

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

Front

What occurs during segment B-C on a heating curve?

Back

During segment B-C, the substance is melting, and the temperature remains constant while potential energy increases.

Front

What happens during segment C-D on a heating curve?

Back

During segment C-D, the substance is in the liquid state, and the temperature increases as kinetic energy increases.

Front

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

Back

Segment D-E represents the boiling point, where the substance is transitioning from liquid to gas, and the temperature remains constant.

Front

What is the significance of the melting point on a heating curve?

Back

The melting point is the temperature at which a solid becomes a liquid, indicated by a flat line on the heating curve.

Front

What is the relationship between potential and kinetic energy during segment CD?

Back

During segment CD, the potential energy is constant while the kinetic energy increases as the temperature of the liquid rises.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a liquid turns into a gas, represented by a flat line on the heating curve.

Front

What does the area under the heating curve represent?

Back

The area under the heating curve represents the total heat energy absorbed by the substance during heating.