wATER CHANGES OF STATE

the three states of water

• solid to liquid
• liquid to gas
• solid to gas

solid to liquid

• The process of changing state requires that energy is transferred in the form of heat
• heat is the easiest energy you can use to change this physical state
• it is the major source of energy for thunderstorms, tornadoes, and hurricanes

Liquid to gas

• the process of changing a liquid to a gas is called evaporation The energy absorbed by the water molecules during evaporation gives them the motion needed to escape the surface of the liquid and become a gas a
• 2

solid to gas

• Sublimation is the conversion of a solid directly to a gas, without passing through the liquid state Deposition is the reverse process, the conversion of a vapor directly to a solid This change happens when water vapor is deposited as frost on cold objects