Chemistry- Acids and Alkalis
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indicator |
A dye that will change colour in acids and alkalis is an indicator.
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litmus |
Litmus paper is used as an indicator in science.
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neutral |
A substance that is neither an acid or alkali and has a PH of 7 is neutral.
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antacid |
An antacid is a medicine containing an alkali used to neutralise some of the acid in the stomach to treat heartburn.
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neutralisation
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A neutralisation reaction is when an acid and an alkali cancel each other out.
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