Rates of Reaction and Equilibria Key Definitions 0.0 / 5 ? ChemistryReactionsRatesEquilibriaASOCR Created by: alexdakotaCreated on: 15-10-15 14:09 Rate of Reaction The rate at which reactants are being converted into products 1 of 13 Collision Theory Particles must collide to react. A minimum amount of energy is needed for a reaction to occur. They must also collide in the correct orientation 2 of 13 Concentration The amount of solute in a given volume of solvent 3 of 13 Kinetic Energy The energy possessed by a body because of its motion 4 of 13 Activation Energy The minimum amount of energy that the colliding particles must possess for a collision to result in a reaction 5 of 13 Catalyst A substance that increases reaction rate without being consumed by the overall reaction 6 of 13 Homogeneous Catalyst Reactants and catalyst are in the same state 7 of 13 Heterogeneous Catalyst Reactants and catalyst are in different states 8 of 13 Static Equilibrium A system in equilibrium that is in balance and not changing (there is no movement) 9 of 13 Dynamic Equilibrium A system in equilibrium with continuous movement- forward and reverse rates are the same 10 of 13 Closed System Nothing is added or taken away e.g. pressure, concentration and temperature 11 of 13 Le Chatelier's Principle When a change is made to a system in equilibrium, the position of equilibrium moves to oppose the change made 12 of 13 Reversible Reaction Reactions that take place in both forward and reverse directions 13 of 13
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