It depends since every substance has its melting, boiling and freezing point. ex: water's is 0c or less.
All solid can be liquified if the temperature is high enough.
Heat them.
When solids are heated, they gain energy and vibrate more, causing an increase in temperature. Liquids, on the other hand, absorb the heat energy and may evaporate to form gases depending on the temperature reached.
Cause your body contains a very high temperature causing the solids to dissolve into liquids
The process of melting.
heat
liquids turn into gas and solids don't and gas evaporates
Almost all solids will turn into liquid at some temperature.This process is called melting and the temperature at which the solid melts is its melting point.
Solid
with some you can ex) water can turn into ice
That temperature is known as the melting point. It is different for every substances.
Solids become liquids when the temperature reaches melting point, groups of particles start to brake away from each other. This is when the solid starts becoming a liquid. Liquids become solids on cooling, the particles move slower and become a solid.