Kinetics and Equilibria 0.0 / 5 ? ChemistryEquilibriaASAQA Created by: Jasmine KhatriCreated on: 27-05-15 15:28 Define rates of reaction? The change in conc/mass/volume in a unit of time. 1 of 6 Why does a reaction decrease as time increases? There are less particles to collide so less collisions. Particles are also further apart. 2 of 6 Define activation energy? The minimum energy required for a successful collision to start a reaction. 3 of 6 During decomposition a substance? Is used up 4 of 6 What must happen before molecules can react? They must have the min activation energy and collide. 5 of 6 Why does decomposition occur at a higher temperature? More energy, more molecules have the minimum Ea. 6 of 6
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