231216
Description
Flashcards by hollyweber, updated more than 1 year ago
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Created by hollyweber
about 12 years ago
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| Question | Answer |
| What is an exothermal energy reaction? | The reaction gives out energy |
| What is the activation energy? | The energy required to start the reaction |
| If the energy change is negative what does it mean? | It is an exothermic reaction |
| If the energy given out is positive, what does it mean? | It is an endothermic reaction |
| What is the formula for gradient? | Y divided by x |
| What is the formula for rate? | Amount of reactant/ time |
| What does a)△E= -ve b) △E= +ve mean? | a) Negative energy change (exothermic energy reaction b) Positive energy change (endothermic reaction) |
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