pH testing

AIM:to test the pH range of household chemicals

Equipment: a variety of household chemicals, spotting tile, red litmus paper, blue litmus paper, Universal indicator soloution, safety glasses.

Method: 1:add a few drops of each chemical to a spot on your spotting tile. if a subtance is solid or powdered you will need to add a few drops of water before testing it.
2:test the chemicals with the blue and red litmus paper.
3. Test each chemical with a few drops of universal indicator.

Results:

Chemical being tested	Colour in blue litmus paper	Colour in red litmus paper	Colour in Universal indicator
Toliet cleaner	It went red	It stayed red	It went Red
Dish soap	It went red	It stayed red	It went Yellow
Spray n Wipe	It went dark Blue	It went blue	It went Blue
Baking soda	Forgot to add water	Forgot to add water	It went Blue

Disscusion:So back we did this experiment we got everything we needed and we got to work. After it was all set up we got to add the indicator into one of each of the little half spheres to tell us what the pH level was. In the next row of treys we added blue litmus paper and if it went red it means its an acid and if it stayed blue it is either a base or a neutral substance. The final one we added red litmus paper and it is the same as the blue but in reverse. With the universal indicator the more red it goes it means the stronger an acid and the more blue - violet it goes it means the stronger the base it is.

Conclusion

Chemical being tested	acid or base	evidence
Toilet cleaner	Acid	all the test it went red
Dish soap	Acid	all the test it went red  apart from the U.I it went yellow
Spray n Wipe	Base	all the test it went Blue
Baking soda	Base	all the test it went Blue