Write an activity to prepare an indicated at home and to use it to test chemical nature of substance?
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1. Turmeric :Natural Indicator
Activity
Take a tablespoonful of turmeric powder. Add a little water and make a paste.
Make turmeric paper by depositing turmeric paste on blotting paper/filter paper and drying it. Cut thin strips of the yellow paper obtained.
Put a drop of soap solution on the strip of turmeric paper
2. China Rose (Hibiscus) as Indicator
Activity
Collect some China rose petals and place them in a beaker. Add some warm water. Keep the mixture for some time till water becomes colored . Use the colored water as an indicator. Add five drops of the indicator to each of the solutions.
A solution of china rose turns green in a basic solution, and bright pink or magenta in an acidic solution.
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