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confey acid revision
sample questions
Question | Answer |
---|---|
it has a sour taste | acid |
HCl is the formula for the acid | hydrochloric acid |
H2SO4 is the formula for the acid | sulphuric acid |
lemons contain the acid | citric acid |
vinegar contains the acid | acetic acid |
Tooth paste is a | base |
NaOH is the formula for the base | sodium hydroxide |
in an acid, red litmus paper | stays red |
in an acid, blue litmus paper | turns red |
in a base, red litmus paper | turns blue |
in a base, blue litmus paper | stays blue |
in a neutral liquid, red litmus paper | stays red |
litmus paper tells if | a liquid is an acid, a base or neutral |
universal indicator paper tells | the strength |
the pH scale goes from | 1 to 14 |
a pH of 7 is | neutral |
a pH from 1 to 7 is | acidic |
a pH from 7 to 14 is | basic |