Water
 
Water <ul><li>Water is a  polar  molecule </li></ul><ul><li>Therefore it is a good solvent </li></ul>O H H + + -
Water <ul><li>It forms weak  hydrogen bonds   </li></ul><ul><li>It remains a liquid over a wide temperature range </li></ul>
<ul><li>Water molecules stick to other substances = adhesion (capillarity) </li></ul><ul><li>Water molecules stick to one ...
Water <ul><li>It has a high specific heat capacity – so water can maintain a reasonably constant temperature (essential fo...
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BiologyExchange.co.uk Shared Resource

  1. 1. Water
  2. 3. Water <ul><li>Water is a polar molecule </li></ul><ul><li>Therefore it is a good solvent </li></ul>O H H + + -
  3. 4. Water <ul><li>It forms weak hydrogen bonds </li></ul><ul><li>It remains a liquid over a wide temperature range </li></ul>
  4. 5. <ul><li>Water molecules stick to other substances = adhesion (capillarity) </li></ul><ul><li>Water molecules stick to one another = cohesion (surface tension) </li></ul>Water
  5. 6. Water <ul><li>It has a high specific heat capacity – so water can maintain a reasonably constant temperature (essential for marine organisms) </li></ul><ul><li>It has a high latent heat of evaporation – so animals use water to cool themselves </li></ul><ul><li>It is less dense as a solid (ice)… </li></ul><ul><li>… and ice is a poor conductor </li></ul>
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