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What is a chemical reaction?

Back

A process in which substances (reactants) undergo a transformation to form new substances (products).

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What are reactants in a chemical reaction?

Back

The starting substances that undergo change during a chemical reaction.

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What are products in a chemical reaction?

Back

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

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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; it remains constant.

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What is an exothermic reaction?

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A chemical reaction that releases heat energy to the surroundings.

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What is an endothermic reaction?

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A chemical reaction that absorbs heat energy from the surroundings.

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What is aerobic respiration?

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

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What is the chemical equation for aerobic respiration?

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C6H12O6 + O2 → CO2 + H2O + energy.

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What is combustion?

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A chemical reaction that occurs when a substance reacts rapidly with oxygen, producing heat and light.

Front

What is a catalyst?

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