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What is a chemical reaction?

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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 are reactants in a chemical equation?

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The starting substances that undergo a chemical change in a reaction.

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What are products in a chemical equation?

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The substances that are formed as a result of a chemical reaction.

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What is a balanced chemical equation?

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An equation that has the same number of each type of atom on both sides, indicating that mass is conserved during the 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; the total mass of reactants equals the total mass of products.

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What is a synthesis reaction?

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A type of chemical reaction where two or more simple substances combine to form a more complex product (e.g., A + B → AB).

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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 (e.g., AB → A + B).

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What is a single displacement reaction?

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A type of chemical reaction where one element replaces another in a compound (e.g., A + BC → AC + B).

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What is a double displacement reaction?

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A type of chemical reaction where the anions and cations of two different compounds exchange places, forming two new compounds (e.g., AB + CD → AD + CB).

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What is combustion?

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A chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat (e.g., hydrocarbon + O2 → CO2 + H2O).