Chemistry: 2b
- Created by: Ridha Ahmed
- Created on: 25-12-14 16:36
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- Chemistry: 2b
- Rates of reaction
- amount of reactant used / time
- amount of product formed / time
- affected by temp, concentration, surface area, presence of a catalyst
- amount of reactant used / time
- Collision theory
- particles must collide with enough energy to react
- increased temp- increases kinetic energy. so, more successful collisions
- larger surface area- larger area for particles to react
- Endothermic reactions
- takes energy from surroundings
- for example: thermal decomposition, sports injury packs
- if a reversible reaction is exothermic one way, it is endothermic the other
- Exothermic reactions
- transfer energy to the surroundings
- shown buy increase in temp
- for example: oxidation, combustion and neutralisation
- transfer energy to the surroundings
- Exothermic reactions
- Rates of reaction
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