Testing pH
Aim: To test the pH of a range of household chemicals.
Method:
- Add a few drops of each chemical to a spot on your spotting tile. if a substance is solid or powdered you will need to mix it with a few drops of water before testing it.
- Test the chemical with litmus papers.
- Test each chemical with a few drops of Universal indicator.
Results:
Chemical being tested
|
Colour in blue litmus
|
Colour in red litmus
|
Colour in Universal indicator
|
Dishwasher liquid
|
Orange
|
Red
|
Red
|
Toilet cleaner
|
Red
|
Orange
|
Orange
|
Spray and wipe
|
Blue
|
Blue
|
Green
|
Floor cleaner
|
Violet
|
Violet
|
Yellow
|
Conclusion:
Chemical Being tested
|
Acid or Base
|
Evidence from investigation
|
Dishwasher liquids
|
Acid
|
Every results are acid colour
|
Toilet cleaner
|
Acid
|
Every results are acid colour
|
Spray and wipe
|
Base
|
Every results are base colour
|
Floor cleaner
|
Base
|
Every results are base colour
|
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