Properties of Water

Water properties:

  • Water is the only substance on Earth that naturally occurs as a solid, a liquid, and a gas.
    • These changes of state require heat exchange which is important to the redistribution of heat energy in the atmosphere
  • Water has a high specific heat, and so it can absorb large amounts of heat energy before it begins to get hot and releases energy slowly when situations cause it to cool.
    • This helps moderate the Earth’s climate and helps organisms regulate their body temperature
  • Water in a pure state has a neutral pH, so is neither acidic nor basic
    • changes in pH occur when substances are dissolved
    • rain is naturally acidic, with a pH of about 5.6, because it dissolved carbon dioxide and sulphur dioxide.
  • Water conducts heat more easily than any liquid except mercury.
    • This causes large bodies of water to have a uniform vertical temperature
  • Water is a universal solvent and is able to dissolve a large number of different chemical compounds.
    • This feature also enables water to carry solvent nutrients in runoff, infiltration, groundwater flow and living organisms
  • Water has a high surface tension and tends to form drops
    • this allows water and dissolved nutrients to move through plants and blood via tiny vessels in the bodies of some animals

Have fun with these experiments and activities

Make a cloud

Make a Water Filter

Water evaporation experiment

Make a Terrarium