Key terms - Chemistry 0.0 / 5 ? ChemistryenergyGCSEAll boards Created by: Caitlyn GraystonCreated on: 15-03-13 16:38 Activation Energy is the energy needed for a reaction to happen/ energy needed to break the bonds of the reactants 1 of 9 Collision Theory How particles react, they need to hit each other with enough energy for it to react 2 of 9 Reaction Rate the speed at which the reaction occurs 3 of 9 Reactant the chemicals at the start of the reaction 4 of 9 Product the chemicals made at the end of the reaction 5 of 9 Concentration number of particles in a certain volume 6 of 9 Temperature the speed at which the particles are moving 7 of 9 Surface area the space on the outside of the particle 8 of 9 Catalyst a chemical added to a reaction to speed it up but does not get used up 9 of 9
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