Indicators & Litmus Test
We cannot taste everything to see if it's acid or base.
Indicators change color to tell us the truth!
Natural Indicators
Methyl Orange & Phenolphthalein
Introduction to Litmus Paper
Click the
Blue
Litmus papers
Turns
Red
in Acid.
No change in Salt/Base.
Click the
Red
Litmus papers
No change in Acid/Salt.
Turns
Blue
in Base.
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