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Rates of Reaction

Chemistry Chapter 14 in ReviseWise

ACTIVATION ENERGY The minimum energy required in which particles need to collide to cause a reaction
RATE OF A CHEMICAL REACTION The change in concentration in unite time of any one reactant
INSTANTANEOUS RATE OF REACTION Rate at a particular point in time during the reaction
CATALYST A substance that alters the rate of a chemical reaction but is not consumed in the reaction
HETEROGENEOUS CATALYST Catalyst in a different phase to the reactants (also happens at the surface- adsorption)
HOMOGENEOUS CATALYST Catalyst in the same phase to the reactants
FACTORS AFFECTING REACTION RATES Concentration Temperature Catalyst Nature- Ionic or Covalent Particle Size
ENZYMES Catalyse in livers- homogeneous catalyst
AUTOCATALYSIS Occurs when the product of reaction increases the react of the reaction
CATALYTIC CONVERTER Reduces Emissions of gases Transition Metals- Platinum & Palladium Heterogeneous- Catalyst is solid, whilst reactant is gaseous