Neutralisation

 Aim: To observe a neutralization reaction

Method: 

1. Get a test tube rack, 6 test tubes, acid, base, and universal indicator.

2. Fill four test tubes with 3mL of acid

3. Fill the remaining two test tubes with 3mL of base

4. Add a squirt of universal indicators to each one.

5. add different amounts of acids and bases to make the colors of the rainbow. (ROYGBI)

Results:

Red Bottle: Acid

Blue Bottle: Base

Black Bottle: Universal indicator

The mixture inside the test tube: Colours of the rainbow mixture of acids and bases.

Discussion: These went these colors ROYGBI. The red one is for R and it goes red because it is the most acidic. The orange is a mix of green and red but is quite acidic, The yellow is less acidic than orange but more acidic than green. Green is neutral. Blue is more base than green. Indago has the most base out of them all. The redder it is the more acidic it is. the bluer it is the more base it is. Neutralisation is when an acid and a base mix together so that it isn't acidic or a base but instead in the green zone of colors or a 7 on the pH scale. 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. 

Conclusion: We got the results we were looking for and we got all of the color ROYGBI, These results are important to tell what number on the pH scale it has. The redder it is the lower the number on pH level. The bluer it goes the higher the number on the pH scale. Next time I would focus on getting the red more bright red and also to try to make a violet color which is all base. Overall we got a pretty good result with the answer we wanted to get.