Physical Changes

• this is a state change pyramid

  
• what is the process of freezing?

  liquid to solid
• freezing releases thermal energy
• what is the process of melting?

  solid to liquid
• melting Absorbs thermal energy
• what is the process of deposition?

  gas to solid
• deposition releases thermal energy
• sublimation absorbs thermal energy
• what is the process of sublimation?

  solid to gas
• what is the process of vaporization?

  liquid to gas
• vaporization absorbs thermal energy
• condensation releasing thermal energy
• what is the process for condensation?

  gas to liquid
• all liquids undergo this except helium when the temperature becomes sufficiently cold

  Freezing
• the settling of particles or sediment onto a surface

  deposition