Experiment Method

My experiment method:

This processes will be repeated 3 times with different people.

PROCESS 1:

1 Drink a glass of pure water with a pH of 7, neutral.
2 Spit out your saliva into a cup after all the water is swallowed and record the pH of your saliva.
3 Drink a glass of orange juice with a pH of 4
4 Record if the taste of the orange juice was the same as normal

PROCESS 2 :

1 Drink a glass of pure water with a pH of 7, neutral.
2 Brush your teeth with toothpaste with a pH of 9.
3 Spit your saliva out into a cup and record the pH level.
4 Drink a glass of orange juice with a pH of 4.
5 Notice any taste changes with the taste of the orange juice.
6 Explain the difference between the taste of the orange juice drank before and the orange juice consumed last.