CHEMISTRY - Rates of Reaction
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15 Terms
What is defined as the rate of a reaction
how fast the reactants are changed into products
what is an example of a slow reaction
the rusting of iron
what is an example of a fast reaction
burning
What is an example of a really fast reaction and why
explosions - they are over in a fraction of a second and release a lot of gas
how can you find the speed of a reaction
by recording the amount of product formed or the amount of reactant used up over time
the steeper the line on the graph…
the faster the rate of reaction
as the reactants are used up over time, what happens to the line on the graph
it becomes less steep
what reactions have the steepest lines
the quickest reactions
in what reaction does the line become flat in the least time
the quickest reactions
in order to react , what must particles do
collide with enough energy
give two things that the rate of a chemical reaction depends on
the collision frequency of reacting particles and the energy transferred during a collision
what is the collision frequency of reacting particles
how often they collide
the more collisions per second there are…
the faster the reaction is
what does doubling the frequency of collisions do to the rate
doubles it
what is the minimum amount of energy needed to start the reaction called
the activation energy