Making Indacators

 Aim: To make acid-base indicators using everyday substances

Equipment: Red cabbage, tea, beetroot, tumeric, cranberry juice, a beaker, water, tripod, bunsen burner, gauze mat, 1.0 mol L-1 HCI and 1.0 mol L-1 NaOH.

Method: 

For cabbage and Beetroot, chop the cabbage into small pieces until you have enough to fill 2 cups. Place the cabbage in a large beaker and add water to cover the cabbage. Boil over a bunsen burner for at least ten minutes for the colour to leach out of the cabbage. Filter out the plant materDiial to obtain a red-purpleish coloured liquid. This liquid is about pH 7. Place a small beaker and leave to one side. Repeat this method for beetroot. 

For the tea: Put 100m of water into a beaker and boil. Turn off the bunsen burner and put three tea bags in the beaker. Remove the tea bags when the tea is very strong. Place in a small beaker and leave to one side. 

For Cranberry Juice: Pour into a beaker and leave to one side.

For the Tumeric: Mix 1 teaspoon turmeric in 100ml cup of alcohol. Place in a small beaker and leave to one side.

Results: 

Discussion: What does this mean? It went different colours because of the different chemicals we used like when we used acid the cabbage turned pink and when we used base it turned yellow.

Conclusion: Did it work? The experiment worked out really well and nothing went wrong, I wouldn't really do anything different seeing that it worked.