Acids And Bases
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Examples of acids
Hydrochloric acid, vitamin C, lemons, sour milk
Litmus
Acid turns litmus from blue to red Bases turn litmus from red to blue Neutral red stays red and vice versa
Indicator
A compound which shows by means of colour change whether a substance is acidic or basic
Examples of neutral substance
Sugar, salt water
Examples of bases
Indigestion tablets Bath salts Toothpaste Window / oven cleaner
PH scale
7- neutral 1-7 acidic 7-14 base (alkaline)
How do we find the ph of a solution
A ph sensor attached to a datalogger and a computer - ph paper -universal indicator solution They’re placed in the tested solution , there will be a colour change which you should compare against a colour chart that comes with it