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7 Cards in this Set
- Front
- Back
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Reaction rate |
The change in concentration of reactants or products per unit time |
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What is the collision theory |
The collision theory is a model that explains reaction rate as the result of particles colliding with a certain minimum energy to form products |
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What are catalysts and how do they work |
Catalysts are substances that increase the rate of a chemical reaction without undergoing a permanent change itself. A catalyst increases the rate of a reaction by providing an alternative path of the lower activation energy therefore decreasing the net activation energy |
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Explain what is meant by open and closed systems |
An open system continuously interacts with its environment whilst a closed system is isolated from its surroundings |
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What is a reversible reaction |
A reaction is reversible when products can be converted back to reactants and vice versa |
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Explain what is meant by chemical equilibrium |
It is a dynamic equilibrium when the rate of the forward reaction equals the rate of the reverse reaction |
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State le chatelier's principle |
When the equilibrium in a closed system is disturbed the system will reinstate a new equilibrium by favouring the reaction that will oppose the disturbance |
