chemical reactions and energy Flashcards
what is an exothermic reaction
An exothermic reaction is one that transfers energy to the surroundings so the temperature of the surroundings increases
e.g. combustion
What is an endothermic reaction
An endothermic action is one that takes energy from the surroundings to the temperature of the surroundings decreases
What are reaction profiles used for
Reaction profiles are used to show the relative energies of the reactants and products, the activation energy and overall energy change of a reaction
what is activation energy
the minimum amount of energy that particles must have to react
How is bond energy used to identify exothermic or endothermic reactions
If the overall energy change is positive reaction is endothermic
if the overall energy change is negative reaction is exothermic
