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
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Colours in blue litmus
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Colour in red litmus
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Colour in Universal indicator
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Pledge
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Red - Orange
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Morning Fresh
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Yellow-Green
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Water
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Green-Blue
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Harpic
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Orange
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Jif
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Dark Purple
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