Heating and Cooling Curves

Front

What are the states of matter present at points D-E on a heating and cooling curve?

Back

Liquid and gas.

Front

What type of process occurs from point A to point F on a heating and cooling curve?

Back

Exothermic process, releasing heat to the surroundings.

Front

What phase change occurs during condensation?

Back

Gas to liquid.

Front

What is the state of the substance between points C and D on a heating and cooling curve?

Back

Liquid.

Front

What is the freezing point of the substance in the heating and cooling curve?

Back

60°C.

Front

What is the boiling point of a substance in a heating and cooling curve?

Back

The temperature at which the substance transitions from liquid to gas.

Front

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

Back

The temperature remains constant during a phase change.

Front

What is the significance of point A on a heating and cooling curve?

Back

It represents the starting point of the substance, typically at a solid state.

Front

What occurs at point B on a heating and cooling curve?

Back

Melting of the solid into a liquid.

Front

What is the role of heat in the process of vaporization?

Back

Heat is absorbed to convert a liquid into a gas.