C3 - B

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  • Created by: zoolouise
  • Created on: 02-06-15 17:13
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  • Rate of reaction (2)
    • Reacting particle model
      • Chemical reactions take place when particles collide.
      • The rate of reaction depends on the number of successful collisions between the reacting particles.
      • The rate of reaction can be increased by many things.
        • As the concentration increases, the particles become more crowded. This increases the number of successful collisions between reacting particles. This increases the rate of reaction
        • As the temperature increase the particles gain more kinetic energy and move around more quickly, collisions are more energetic and frequent and therefore the rate of reaction  increases.
        • Increasing the pressure, forces particles closer together and this increases collisions and rate of reaction
      • The rate of reaction depends on the collision frequency
    • Rate of reaction
      • Both tables and graphs can show when a reaction has finished. On a graph the line will be horizontal and in a table the numbers will stop changing.
      • Both tables and graphs can be used to compare the rate of reaction as in a graph the steeper the liner, the faster the reaction and in a table the larger the change between readings, the faster the reaction

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