Water and inorganic molecules

• How latent heat of vaporisation effects water

  High latent heat of vaporisation

  Due to H bonds between molecules, requires a lot of energy to evaporate 1 gram of water

  Evaporation of water e.g by sweat is effective mean of cooling as body heat is used to evaporate water
• (1) Explain five properties that make water important for living organisms


  Important metabolite - used to breakdown molecules by hydrolysis; major raw material for photosynthesis
• (2) Explain five properties that make water important for living organisms


  Solvent for gases, inorganic ions and small hydrophilic molecules
• (3) Explain a property that makes water important for living organisms

  Coolant - evaporation e.g sweating and transpiration as large amounts of heat is used to evaporate water
• (4) Explain five properties that make water important for organisms


  Buffer against sudden temp change - maintains stable temp and keeps enzymes from denaturing
• (5) Explain five properties that make water important for organisms


  Internal support for the body
• (6) Explain five properties that make water important for organisms


  Transparency - aquatic plants can photosynthesise