how to prepare a natural indicator
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Perform a first-hand investigation to prepare and test a natural indicator
Select a suitable coloured plant material, such as purple cabbage.
Extract the colour from the plant material by either: Boiling it in water. Crushing it with water or alcohol using a mortar and pestle.
Decant the solution from the solid.
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- Finely chop the red cabbage on the chopping board
- Place the chopped cabbage in a bowl
- Boil the kettle and pour the hot water in the bowl until it just covers the cabbage
- Stir a little bit and then leave for five to ten minutes. The colouring you can see in the water is your indicator!
- Place the strainer over the second large bowl and pour off the liquid
- Throw your cabbage in the compound.
- Your indicator is now safely in your bowl.
hope it will help you ❣️❣️❣️
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