Collision theory - higher tier
For a chemical reaction to occur, the A substance that reacts together with another substance to form products during a chemical reaction. particles must collide with each other.
Image caption, 1. Two pairs of particles move towards each other
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However, a collision with too little energy will not produce a reaction. The colliding particles must have enough energy for the collision to be successful or effective in producing a reaction.
The minimum amount of energy for a collision to be successful is called the The activation energy is the minimum energy required for a reaction to occur.
The rate of a reaction depends on the rate of successful collisions between reactant particles. The more successful collisions there are, the faster the rate of reaction.
Image caption, 1. Two pairs of particles move towards each other.
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