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Rates of reaction

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by

Harvey Buckle

on 21 April 2016

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Transcript of Rates of reaction

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Rates of reaction
Rates of Reactions
The rate of a reaction can be measured by the rate at which a reactant is used up, or the rate at which a product is formed.

Different reactions can happen at different rates. Reactions that happen slowly have a low rate of reaction. Reactions that happen quickly have a high rate of reaction. For example, the chemical weathering of rocks is a very slow reaction: it has a low rate of reaction. Explosions are very fast reactions: they have a high rate of reaction.
Collision theory
For a chemical reaction to occur, the reactant particles must collide. Collisions with too little energy do not produce a reaction.
And..
Chemical reactions can only happen if reactant particles collide with enough energy. The more frequently particles collide, and the greater the proportion of collisions with enough energy, the greater the rate of reaction.
The collision must also have enough energy for the particles to react. The minimum energy needed for particles to react is called the activation energy.
Starter
So we can...
Increase c_________
Lowering v_______
In______ t_________e
Add c__________
Incr_____ s_____ a____a
What next?
We will answer some questions and then we will do a practical based on concentration and rate and analyse and evaluate it.
Watch
V important!!
Factors affecting the rate of a reaction?
This is what we must learn or be able to do at the end of the lesson
Aim
To know what the rate of reaction represents
To know the factors that affect the rate of a reaction
To answer related questions
21st April 2016
Look in google classroom, but don't try them at home!
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