Then you will watch a video showing ice melting from a solid to a liquid and boiling from a liquid ... Students will use data to generate a heating curve graph. Observe the temperature at each phase ...

A heating curve ... may also see a cooling curve, which is obtained when a substance cools down and changes state. The temperature stays the same when a solid is melting or a liquid is boiling ...

For example, sodium chloride (table salt) has a melting point of 801 °C and a boiling point of 1465 °C, as this heating curve shows: The boiling point of water is 100 °C at normal atmospheric ...