click below
click below
Normal Size Small Size show me how
test revision
fire,fuel and the future chemistry test
| Question | Answer |
|---|---|
| list 3 ways a chemical reaction can be identified | colour change, heat produced, light produced |
| what is a catalyst? | a substance that increases a rate of reaction |
| what other factor can affect the rate of reaction? | concentration or pressure |
| what is the difference between an atom and a molecule |