Heating & Cooling Curves

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 increases.

Front

What is a cooling curve?

Back

A cooling curve is a graph that shows the change in temperature of a substance as it cools over time, illustrating phase changes and temperature decreases.

Front

What happens to the average kinetic energy of particles during heating?

Back

The average kinetic energy of particles increases as the temperature of the substance increases.

Front

What happens to the average potential energy of particles during phase changes?

Back

The average potential energy of particles increases during phase changes, such as melting and boiling.

Front

What is the significance of segment BC in a heating curve?

Back

Segment BC represents the phase change from solid to liquid (melting), where temperature remains constant while heat is absorbed.

Front

What is the significance of segment DE in a heating curve?

Back

Segment DE represents the phase change from liquid to gas (boiling), where temperature remains constant while heat is absorbed.

Front

What states of matter are present during segment AB?

Back

Segment AB represents the solid state, where the substance is being heated and its temperature is increasing.

Front

What states of matter are present during segment EF?

Back

Segment EF represents the gas state, where the substance is being cooled and its temperature is decreasing.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a liquid turns into a gas, typically marked by a plateau on the heating curve.

Front

What is the melting point of a substance?

Back

The melting point is the temperature at which a solid turns into a liquid, typically marked by a plateau on the heating curve.