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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 |