Reaction Profiles (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards
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Reaction profiles (definition)
Reaction profiles (definition)
Graphs showing how energy changes during a chemical reaction
Y-axis on reaction profile
Y-axis on reaction profile
Energy level
X-axis on reaction profile
X-axis on reaction profile
Reaction progress
Activation energy (definition)
Activation energy (definition)
Minimum energy required to start a reaction
Exothermic: reactants vs products energy
Exothermic: reactants vs products energy
Reactants have higher energy than products
Exothermic: height difference meaning
Exothermic: height difference meaning
Energy released to surroundings
Exothermic: overall energy change sign
Exothermic: overall energy change sign
Negative
Endothermic: reactants vs products energy
Endothermic: reactants vs products energy
Products have higher energy than reactants
Endothermic: height difference meaning
Endothermic: height difference meaning
Energy absorbed from surroundings
Endothermic: overall energy change sign
Endothermic: overall energy change sign
Positive
What does the 'hump' represent on reaction profiles?
What does the 'hump' represent on reaction profiles?
Activation energy
Why activation energy is needed
Why activation energy is needed
For reactants to collide with sufficient force to react