The process of going from a solid to a liquid is called melting.
chemical change
chemical change
A change from gas to liquid, from solid to liquid, from liquid to gas, etc.
liquid to solid
When a substance changes from liquid to solid is called freezing.
Solidification is the process of freezing of the substance from liquid form into the solid form as the heat goes out of the substance ie as the temperature decreases.
A substance changes from a solid to a liquid at its melting point
fusion
When a solid turns into a liquid, the substance has melted.
When a solid melts, it gains energy in the form of heat because energy is required to break the intermolecular forces holding the solid together. This energy goes into overcoming these forces, allowing the solid to transition to a liquid state.
A physical change to a substance is a change in its state. This means that the substance goes from a solid to a liquid or gas, or vice versa.
A substance change from a solid to a liquid at its boiling point. This is when it reaches a certain temperature.