S2 Revision Acids & Alkalis 12/1/2018 Topics 8 & 9.

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Presentation transcript:

S2 Revision Acids & Alkalis 12/1/2018 Topics 8 & 9

pH Scale This scale measures the level of acidity or alkalinity of a solution. In school chemistry the scale ranges from:- 1 -> 7 -> 14 12/1/2018 Topics 8 & 9

pH Scale This scale measures the level of acidity or alkalinity of a solution. In school chemistry the scale ranges from:- 12/1/2018 Topics 8 & 9

Adding Acid To Water Add acid and it will turn red. Add universal indicator to water. It will show a green colour. Add acid and it will turn red. 12/1/2018 Topics 8 & 9

Experiment – Groups of 2 Take pH paper and test the two solutions provided. Use: Safety glasses Dimple tray Pipette Write the name colour and whether it is an acid or an alkali. 12/1/2018 Topics 8 & 9

12/1/2018 Topics 8 & 9

Laboratory Acids hydrochloric acid nitric acid sulphuric acid 12/1/2018 Topics 8 & 9

Common Acids Vinegar Lemon juice Orange juice Lemonade etc….. 12/1/2018 Topics 8 & 9

Common Alkalis Sodium bicarbonate Ammonia Toothpaste Bleach 12/1/2018 Topics 8 & 9

Neutralisation 12/1/2018 Topics 8 & 9

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