Water

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  • Created by: Laura
  • Created on: 14-01-10 20:06

SOFT WATER;

  • Soft water is the 'normal' water. It dissolves most ionic compounds, including: chlorides, sulphates, nitrates (with some exceptions) ammonium, potassium and sodium.
  • Water is classed as the 'universal solvent'.
  • Water molecules are polar - they have a positive hydrogen side and a negative oxygen side.

HARD WATER;

  • Caused by magnesium chloride, magnesium sulphate, calcium chloride and calcium sulphate.
  • Passes over rocks, such as limestone or chalk, and the above minerals dissolve into the water.
  • Also, when CO2 is in the air, it sometimes dissolves in the rain water

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