Science - Neutralisation

 Today in science we are looking at Neutralisation. 

Aim: To look at the pH scale and neutralises acid and alkaline substances using a Univeral indicator.

Neutralisation experiment

Equipment:
1. Univeral indicator
2. 1 m HCI
3. 1 m NaOH
4. 4 test tubes
5. Test tubes rack
6. 2 plastic pipettes.

Method:

1. Take a test tube rack with 1 boiling tube at each end of the rack and 4 test tubes.
2. Half full the boiling tube at one with Sodium Hydroxide.
3. Half full the boiling tube at the other end with Hydrochloric acid.
4. Fill each test tube with 5 drops of Univeral indicator.
5. Using the pipettes you will add drops of acid or alkaline to the test tubes to make colours of red, orange, yellow, green, blue, violet.
6. Do not mix up the pipettes.

Challenge:
To use the acids and alkalines to make colours of the pH scale.

Out of the 6 test tubes, you should have the order of red, orange, yellow, green, blue, violet. 

Once you have completed this you need to take a photo of your test tube rack.

Activity:
1. Make your own copy of the pH scale. On the paper provided make 14 boxes and colours them the correct colours according to the pH scale.

2. Make a drawing of the experiment from yesterday. Use the back of the paper with the pH scale. Label all of the equipment.

Conclusion:
For the challenge, the group I was in got all of the colours.