1.Take a test tube rack with 1 boiling tube each end of the rack and four test tubes.
2.Half fill the boiling tube at one end with sodium Hydroxide.
3. Half fill the boiling tube at the other end with Hydrochloric acid.
4.Fill each test tube with 5 drops of Universal indacator
5. using the pipettes you will add drops of the acid or alkaline to the test tubes to make colours of Red Orange Yellow Green blue Violet
6.DO NOT MIX UP THE PIPETTES!!!
