Question

2 2) How do you prapere the natural indicators​

Answer 1

Answer:

Many plants contain their own indicators – turmeric, red cabbage juice and beetroot juice are three good examples. Other examples are tea and red grape juice. Hydrangea flowers are different colours depending on whether the soil is acid or alkali. In acid soil they are blue and in alkaline soil they are red!

: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.

Answer 2

Answer:

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.