Energy in chemical reactions

one that takes in heat eg sherbet with water

one that gives out heat eg. burning coal

for a reaction to occur, the reacting particles must collide with each other

one that results in the formation of products when the activation energy is reached

the minimum energy which colliding particles must have for a reaction to occur

At a higher temp, colliding particles move more quickly so they have more energy so the amount of effective collisions is increased so chemical reactions are faster

a graph that shows the change in energy of a reaction, as time passes, while the reaction takes place

provides an alternative route for the reaction to occur which has a lower Activation Energy , so the rate of reaction increases

if the energy of the products is higher than the energy of the reactants

delta (change) in heat

EA

a large number of molecules have enough energy to pass over this energy barrier, so the rate of reaction is quick