Types of Chemical Reactions

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What is a Single Replacement Reaction?

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A reaction where one element replaces another in a compound, represented by the formula A + CD → C + AD.

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What is a Decomposition Reaction?

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A reaction where a compound breaks down into simpler substances, represented by the formula compound → element + element.

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What is a Coefficient in a chemical equation?

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A number placed before a chemical formula to indicate the number of molecules or moles of that substance, e.g., 2 in 2H₂.

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What is a Double Replacement Reaction?

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A reaction where parts of two compounds exchange places to form two new compounds, represented by the formula AB + CD → CB + AD.

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What is the Law of Conservation of Mass?

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It states that matter cannot be created or destroyed in a chemical reaction.

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What is a Combination Reaction?

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A reaction where two or more substances combine to form a single product, represented by the formula A + B → AB.

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What is a Combustion Reaction?

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A reaction where a substance combines with oxygen, releasing energy in the form of light or heat, typically producing CO₂ and H₂O.

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What is a Reactant?

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A substance that undergoes a chemical change in a reaction, found on the left side of a chemical equation.

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What is a Product?

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A substance that is formed as a result of a chemical reaction, found on the right side of a chemical equation.

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What is a Chemical Equation?

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A symbolic representation of a chemical reaction, showing the reactants and products.