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What we know about pH indicators by Mind Map: What we know
about pH indicators
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What we know about pH indicators

Only a small amount of indicator is needed for testing

Indicators weak acids or bases

Some fruits are acidic

Some fruits are alkali

Indicators change colour when in contact with acid or alkali

Indicators that change to a single colour in acidic/alkali solution

Universal indicators which change into many colours in solutions with different pH

Indicators change colours immediately in contact with acids or bases