2.2 - Water

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Across
  1. 4. tension (of water) the intermolecular hydrogen bonds between molecules of water at the surface.
  2. 6. molecules capable of interacting with water through hydrogen bonding (having an affinity for water).
  3. 8. heat capacity the amount of energy required to raise the temperature of water by one degree Celsius (water has to absorb 4.184 joules of heat for the temperature of one gram of water to increase by 1°C).
  4. 9. the force by which individual molecules cling to surrounding material and surfaces.
  5. 10. property that allows light to penetrate molecules of water.
  6. 12. point the temperature at which the vapour pressure of a given liquid reaches atmospheric pressure and thus starts to boil (100°C for water).
  7. 13. the property of a substance of being soluble (dissolved).
  8. 14. the force by which individual molecules stick together.
Down
  1. 1. a light, colourless gas (CH4).
  2. 2. point the temperature at which a liquid solidifies (0°C for water).
  3. 3. a liquid in which substances (or solutes) are dissolved to form a solution.
  4. 5. bond a weak bond caused by electrostatic attraction between a positively-charged part of one molecule and a negatively-charged part of another.
  5. 7. molecules that lack an affinity for water (water insoluble).
  6. 11. property of having distinct and opposite charges (poles).