How do you turn solid into liquid

Question: How do you turn solid into liquid
- Keywords:
  energy,
  molecule,
  physical state
Asked by ep to Mako on 24 Jun 2015.
- Tat Ming Mako Ng answered on 24 Jun 2015:
  
  Most solids turn into liquid if you heat it above their melting point.
  
  An easy example would be water. Water is a solid (ice) below 0 °C and is a liquid above 0 °C. Metals will turn into a liquid at a much much higher temperature, for example, copper becomes liquid at 1100 °C.
  
  Sometimes chemical reaction happens when you heat something, so instead of turning a solid into liquid, you may get smoke and ashes.

Question: How do you turn solid into liquid