The process of melting.
Heat them.
heat
liquids turn into gas and solids don't and gas evaporates
Solids turn into liquid. Liquid boils. Simple
the solids can turn to liquids by melting and to gas by sublimation
with some you can ex) water can turn into ice
Liquids can through evaporation, and solids can through combustion.
All solid can be liquified if the temperature is high enough.
Liquids do, but solids do not.
When a liquid looses enough energy (heat), it turns into a solid.
Solids to Liquids (Melting) Liquids turning back into a Solid (Freezing) ((SCF))
solids and liquids