testing pH levels

AIM: to test the pH of a range of household chemicals.

EQUIPMENT: a variety of household chemicals, spotting tile, red litmus paper, blue litmus paper, universal indicator solution, safety glasses.

METHOD: 
1) add a few drops of each chemical to a spot on your spotting tile. if a substance is solid or powered you will need to mix it with a few drops of water before testing it.

2) test the chemicals with both red and blue litmus paper.

3) test each chemical with a few drops of universal indicator.

RESULTS AND DISCUSSION: 
1) dish washing power. I believe that this is a base as in all of the tests i did the colour was a blue and on the pH scale that means it is a weak base

2) vinegar. I believe that this is a mild acid because all of the tests I ran the colour was orange, indicating that it has a ph level of 3-5

3) baking soda. I also believe that this is a strong acid, because with the indicators came back with a strong red colour, with a predicted 1-3 on a Ph scale

CONCLUSION:
this experiment worked because colours were shown when they were meant to, as shown in this photo, curtsy to Mr Heath