Chemical Reactions

Front

What is a chemical reaction?

Back

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

Front

What are reactants in a chemical reaction?

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The starting substances that undergo change during a chemical reaction.

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What are products in a chemical reaction?

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The new substances formed as a result of a chemical reaction.

Front

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.

Front

What role do catalysts play in chemical reactions?

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Catalysts speed up chemical reactions without being consumed in the process.

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What is the difference between a chemical change and a physical change?

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A chemical change results in the formation of new substances, while a physical change does not change the substance's chemical identity.

Front

What is cellular respiration?

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A chemical process in which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Front

What is the significance of temperature in chemical reactions?

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Increasing temperature generally increases the rate of a chemical reaction by providing more energy to the reactants.

Front

What is a balanced chemical equation?

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An equation that shows the same number of each type of atom on both sides, indicating that mass is conserved.

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What is an exothermic reaction?

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A chemical reaction that releases energy, usually in the form of heat.