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Thursday 10 May 2018

Testing pH

Aim: To test the pH of a range of household chemicals.

Equipment: A variety of household chemical, spotting tile, red litmus paper, blue litmus paper, Universal indicator solution, safety glasses.

Method:
1. Add a few drops of each chemical to a spot on your spotting tile. If a substance is solid or powdered you will need to mix it with a few drops of water before testing it.

2. Test the chemicals with litmus papers.

3. Test each chemical with a few drops of Universal indicator.


Chemical being tested
Colours in blue litmus
Colour in red litmus
Colour in Universal indicator
Pledge


Red - Orange
Morning Fresh


Yellow-Green
Water


Green-Blue
Harpic


Orange
Jif


Dark Purple




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