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Rate of Reaction A rate of reaction is how slow or how fast a reaction takes place "the speed of the reaction" e.g. a slow reaction like rusting an explosion is a fast reaction. There are certain factors that affect the rate of reaction the four main factors are: Temperature: When gasses or liquids are heated the particles gain kinetic energy and move faster. The increased speed results in a higher frequency of a collision between the reactant molecules and the rate increases. Heated molecules have a greater average kinetic energy, and so at higher temperatures, a greater proportion of them have the required activation energy to react Concentration: If the concentration of a chemical increases the will be more particles within the certain space, particles will therefore collide more often and the rate of reaction also increases. Physical State If the particles are the same for e.g. Gas/Gas or Liquid/Liquid then...

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