Chemistry: 3a

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  • Chemistry: 3a
    • Hardness of water
      • Hard water
        • contains dissolved calcium and magnesium compounds
          • rain water comes into contact with rocks and compounds dissolve in the water
      • soft water
        • produces lather easily
          • less soap needed
        • heating systems last longer in appliances(saves money)
      • titration experiment can be done to compare hardness of water
    • Reversible Reactions
      • if a reversible reaction takes place in a closed system equilibrium is reached
        • equilibrium is when both sides of reaction occur at same rate
      • increasing temp favours the endothermic reaction and decreases the rate of the exothermic
      • increasing pressure in a gaseous reaction favours the reaction with less molecules

Comments

ahlam1123

this is so clear thank you for making this:)

quickthinker4

excellent, the whole of C3 on one page!

Anna7777

this is amazing, thank you!

thee22

thank you very much this is going to be really useful for my GCSE

thee22

thank you very much this is going to be really useful for my GCSE

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