Making An Indicator

Making an Indicator LOs: 2. Make and test an indicator.

Answer in the back of your book: 2. What do car indicators show? 3. What do chemical indicators show? 4. Can you name any of the indicators we used yesterday?

Luckshi and Harry

Experiment Aim: To make an indicator using red cabbage. Put on your goggles. Put some red cabbage leaves beaker. Add a little hot water to the leaves. Mix the leaves with a glass rod for 2 minutes. Leave to cool. Return to your desk.

Set up a conical flask, filter paper and funnel. Filter the cabbage and water. The filtrate (liquid) will be your indicator. Add a few drops of indicator to some acid in a test tube, some alkali in another test tube, and some water in another test tube.

Finish off your instructions on making your indicator.

How to make and test my indicator: Write a list of instructions in your book.