In science we are doing another pH test. This time we are using Universal indicator. Here is what we learnt.
Equipment,
Universal idicator
1M HCL (Hydrochloric acid)
1M NaOH (Sodium Hydroxide)
4 Test tubes
2 Boiling tubes
Test tube rack
2 Platsic pipettes
Steps,
1. Take a test tube rack with 1 boiling tube at each end of the rack and 4 test tubes.
2. Half or quarter fill the boiling tube at one end with Sodium Hydroxide.
3. Half or quarter fill the boiling tube at the other end with Hydrochloric acid.
4. Fill each test tube with 5 drops of Universal idicator.
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.
Out of all the colours the only ones we didn't get was yellow.
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