Testing pH ( science )

3/05/2018 
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 is powdered you will need to mix it with a few drops of water before testing it.
2. test the chemicals with litmus papers.
3. test each chemical with a few drops of universal indicator.

Chemical being tested	Colour in blue litmus	Colour in red litmus	Colour in universal indicator
Easy off bam	Dark blue	Dark blue	Dark purple
Dettol	red/pink	Stayed the same	Same colour
Pledge clean and dust	same	purple	Green-ish
Harpic active fresh	red	Same	Same

Universal indicator :
the universal indicator shows us how strongly acidic or alkaline the solution is. universal indicator has many different colour changes, from red for strong acids to dark purple fro strong bases. in the middle neutral 7 pH is indicated by green.
litmus indicator:
Litmus indicator solution turns red in acidic solutions and blue in alkaline solutions. Litmus also comes in a paper form.  Blue litmus paper will turn red in an acid solution and remain blue when added to an alkaline solution. Litmus does not tell you how strong the solution is.