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 phase changes and temperature increases.

Front

What happens to kinetic energy during a phase change?

Back

During a phase change, the kinetic energy of the substance remains constant while the potential energy changes.

Front

In which segment of a heating curve does the temperature remain constant?

Back

The temperature remains constant during the phase changes, specifically in segments B-C (melting) and D-E (boiling).

Front

What is the boiling point of a substance on a heating curve?

Back

The boiling point is the temperature at which a substance changes from a liquid to a gas, indicated by a plateau on the heating curve.

Front

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

Back

The melting point is the temperature at which a substance changes from a solid to a liquid, indicated by a plateau on the heating curve.

Front

Which regions of a heating curve show an increase in temperature?

Back

Regions A, C, and E show an increase in temperature.

Front

What does a plateau on a heating curve indicate?

Back

A plateau indicates a phase change where temperature remains constant as the substance transitions between states.

Front

How does the kinetic energy of particles change as a substance is heated?

Back

As a substance is heated, the kinetic energy of its particles increases, leading to an increase in temperature until a phase change occurs.

Front

What is the significance of the area under a heating curve?

Back

The area under a heating curve represents the amount of heat energy absorbed or released during the heating process.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance; higher temperature means higher kinetic energy.