States of Water

• Condensation


  The process by which a gas (water vapour) changes to a liquid (water) as it loses heat energy.
• Freezing


  The process by which a liquid (water) changes to a solid (ice) as it loses heat energy.
• Melting


  The process by which a solid (ice) changes to a liquid (water) as it absorbs heat energy.
• Evaporation

  When water gains enough heat from its surroundings, it will change from a liquid to a gas called water vapour. This is known as evaporation. Evaporation occurs all the time. It can also occur at any temperature.
• Evaporation can occur in any temperature. The rate of Evaporation increases with temperature.
• Difference between boiling and evaporation

  • |BOILING|
  • It occurs at a fixed temperature (boiling point)
  • It takes place throughout the liquid
  • There are bubbles formed throughout the liquid
  • The temperature of water remains constant
  • |EVAPORATION|
  • It occurs in any temperature
  • It takes place on the surface of the liquid
  • There are no bubbles formed
  • The temperature of water is not constant
• Boiling


  A liquid (water) to a gas (steam). Known as boiling. The temperature of water remains constant at 100 degrees celcius.
• 3 states of water

  Solid, Liquid and Gas.