exothermic and endothermic reactions
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4 Terms
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exothermic reaction
energy is transferred to the surroundings
surrounding temperature increases
combustion, oxidation and neutralisation
negative energy change
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endothermic reaction
energy is taken in from the surroundings
surrounding temperature decreases
thermal decomposition, reaction of citric acid
positive energy change
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activation energy
minimum amount of energy that the particles need to react
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reaction profile
reaction profile is a graph which shows the relative energies of reactants and products as well as the activation energy
Note 
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