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Slide 2

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TEMPERATURE
· The Temperature affects the rates of
reactions by causing the particles to have
more energy which cause them to collide
more often.…read more

Slide 3

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CONCENTRATION
· For many reactions involving liquids or
gases, increasing the concentration of the
reactants increases the rate of reaction.
· E.g.: Zinc and hydrochloric acid
Zn(s) + 2HCL(aq) ZnCl2(aq) + H2(g)…read more

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PRESSURE
· Increasing the pressure on a reaction
involving reacting gases increases the rate of
reaction. Changing the pressure on a
reaction which involves only solids or
liquids has no effect on the rate.…read more

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SURFACE AREA
· The more finely divided the solid is, the
faster the reaction happens. A powdered
solid will normally produce a faster reaction
than if the same mass is present as a single
lump. The powdered solid has a greater
surface area than the single lump.…read more

Slide 6

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COLLISION THEORY
· It concentrates on the key things which
decide whether a particular collision will
result in a reaction - in particular, the energy
of the collision, and whether or not the
molecules hit each other the right way
around (the orientation of the collision).…read more

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