Chemical Reactions

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What is a chemical reaction?

Back

A process where substances (reactants) change into new substances (products) through the breaking and forming of bonds.

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What are reactants in a chemical reaction?

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Substances that undergo change during a chemical reaction.

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What are products in a chemical reaction?

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New substances formed as a result of a chemical reaction.

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What happens to the amount of products if the amount of reactants increases?

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The amount of products may increase.

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What is an exothermic reaction?

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A reaction that releases energy, usually in the form of heat, when products are formed.

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What is an endothermic reaction?

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A reaction that absorbs energy from its surroundings, causing a decrease in temperature.

Front

How does temperature affect the rate of a chemical reaction?

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Increasing temperature generally speeds up the reaction rate.

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What is the law of conservation of mass?

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In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

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What is activation energy?

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The minimum amount of energy required for a chemical reaction to occur.

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What is a catalyst?

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A substance that speeds up a chemical reaction without being consumed in the process.