Science

Aim: To observe neutralisation reaction.

Equipment: 
6 test tubes, test tube rack, 1 base, 1 acid ( making sure it has around the same PH level on opposite sides), dropper bottle, Universal Indicator.

Method:

1. Get all of your equipment.
   
2. Fill 4 test tubes with 3ml of acid.
3. FIll the other 2 with 3ml of the base.
4. Add a squirt of universal indicator to each test tube.
5. Add different amounts of acids and bases to make the colors of the rainbow. (ROYGBIV)

Result.

Discussion: This means that it was changing to a neutral ph level. Tho it is turning green, when t is green that doesn't mean that it would be drinkable. Neutralisation is when a chemical reaction occurs while mixing together a base and an acid.If you neutralize acid but don't add enough base it will go around the orange-yellow color when the universal indicator is added, this would be in the 2-6 area in the pH level. If you neutralize a base but don't add enough acid it would go blue or violet when the universal indicator is added, this is about an 8-12 on the pH scale. What is in an acid that makes it an acid you may ask, an acid is an acid because it has an atom called Hydrogen (H+), every acid has this atom in the acid. What makes a base a base then, a base has something called Hydroxide(OH-) in it instead.