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Rate of reaction
Measuring the mass of a reaction mixture:
The mass will decrease.
Measuring the volume of gas given off:
We know a gas is produced because bubbles are formed.
Measuring the light transmitted through a solution:
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Rate of reaction = time
Things which affect reaction time:
Concentration or pressure
The presence of a catalyst
Collision theory: the theory that particles don't just need to collide to react, but they
need to collide with a certain amount of energy. The smallest amount of energy a
particle needs to react is known as its ACTIVATION ENERGY.
A greater surface area means the there is more particles available for the chemical to
react with, therefore increasing the collision frequency.…read more