Acid, Base, Neutral
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litmus paper
An indicator paper that turns red in an acid and blue in a base
pH paper
determines how strong an acid or a base substance is
neutral
if a substance is this it has a pH of 7 and keeps litmus paper the same color
acid
turns blue litmus red, taste sour, pH of 0-6.9, strong can burn
base
turns red litmus blue, taste bitter, feels slippery, pH of 7.1-14, strong can burn