rates

Introduction

A reaction can be made to go faster or slower by changing the temperature.


At low temperatures particles of reacting substances do not have much energy. however, when the substances are heated the particles take in energy. This causes them to move faster and collide more.


The collisions have made energy so more of them are successful. Therefore the rate of reaction increases.


Some chemical reactions are fast, others are slow. The reactions go at different speeds or rate.


In order for the particles to react together they must:


Collide

Collision must have enough energy


The more successful the collision the faster the reaction.


Using temperatures to control reactions

To slow down a chemical reaction you must reduce the temperature.
If you increase the temperature by 10¢Xc, chemical reactions go twice as fast.

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Outside, the milk goes sour in 2 days.







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Inside a fridge the milk takes m...