Reaction Profiles (AQA GCSE Chemistry): Flashcards
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Reaction profiles (definition)
Reaction profiles (definition)
Graphs showing energy changes during a chemical reaction
Y-axis on reaction profile
Y-axis on reaction profile
Energy of the system
X-axis on reaction profile
X-axis on reaction profile
Progress of reaction from reactants to products
Activation energy (definition)
Activation energy (definition)
Minimum energy required to start the reaction
How activation energy appears on profile
How activation energy appears on profile
Energy 'hump' that must be overcome
Exothermic: reactants vs products energy
Exothermic: reactants vs products energy
Reactants have higher energy than products
Exothermic: reactants position on y-axis
Exothermic: reactants position on y-axis
Higher level than products
Exothermic: overall energy change sign
Exothermic: overall energy change sign
Negative (energy lost to surroundings)
Exothermic: height difference meaning
Exothermic: height difference meaning
Energy released to surroundings
Endothermic: products vs reactants energy
Endothermic: products vs reactants energy
Products have higher energy than reactants
Endothermic: reactants position on y-axis
Endothermic: reactants position on y-axis
Lower level than products
Endothermic: overall energy change sign
Endothermic: overall energy change sign
Positive (energy absorbed from surroundings)
Endothermic: height difference meaning
Endothermic: height difference meaning
Energy absorbed from surroundings