Required practical: water

    Cards (5)

    • What is the purpose of this RP?
      see if the water sample is pure
    • Pure water pH is 7
    • how can you check the PH of water?
      universal indicator paper- if it is green it has a pH of 7
    • Do you know it is pure when you have checked the pH?
      No, you still need to test for dissolved salts
    • How do you test for dissolved salts?
      -fill a basin with water and weigh it on a balance-place the basin on a tripod and gauze over a bunsen burner-heat until evaporated-then weigh again-if the water contained any salts the weight will increase
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