Chemical Reactions Review

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What is a chemical reaction?

Back

A process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

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What does it mean to balance a chemical equation?

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To ensure that the number of atoms of each element is the same on both sides of the equation, reflecting the conservation of mass.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

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What are products in a chemical reaction?

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Substances that are 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.

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What is a synthesis reaction?

Back

A type of chemical reaction where two or more simple substances combine to form a more complex product.

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What is a decomposition reaction?

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A type of chemical reaction where a single compound breaks down into two or more simpler products.

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What is a single replacement reaction?

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A chemical reaction where one element replaces another element in a compound.

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What is a double replacement reaction?

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A chemical reaction where two compounds exchange ions or bonds to form two new compounds.

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What is an example of a combustion reaction?

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The reaction of hydrocarbons with oxygen to produce carbon dioxide and water, e.g., CH₄ + 2O₂ → CO₂ + 2H₂O.