Answers

2015-07-24T22:52:56+08:00
Examples are the ff.
vinegar(ethanoic / acetic acid)
sodium hydroxide
sodium hydrogen carbonate (sodium bicarbonate/bicarbonate of soda
calcium carbonate(marble)
hydrogen peroxide(in hair dye)
iodine
sodium chloride(salt)
sodium acetate 8H2O(hand warmers)
potassium nitrate (saltpeter)
di-sodium tetraborate (borax)
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