Balancing and Classifying Chemical Equations

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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. Example: Na3(PO4) + 3 KOH → 3 NaOH + K3(PO4).

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How do you balance a chemical equation?

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By ensuring the number of atoms of each element is the same on both sides of the equation, often by adjusting coefficients.

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What is a Synthesis Reaction?

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A type of reaction where two or more reactants combine to form a single product. Example: 2 (C5H5) + Fe → Fe(C5H5)2.

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What is a Combustion Reaction?

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A reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat. Example: 4C5H9O + 29 O2 → 20CO2 + 18H2O.

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What is a Decomposition Reaction?

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A reaction where a single compound breaks down into two or more simpler products. Example: 2H2O → 2H2 + O2.

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What is a Single Replacement Reaction?

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A reaction where one element replaces another in a compound. Example: Zn + CuSO4 → ZnSO4 + Cu.

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What are coefficients in a chemical equation?

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Numbers placed before compounds in a chemical equation to indicate the number of molecules or moles of each substance involved.

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What is the Law of Conservation of Mass?

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A principle stating that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

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How do you identify a Synthesis Reaction?

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Look for a reaction where multiple reactants combine to form one product.

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How do you identify a Decomposition Reaction?

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Look for a reaction where one reactant breaks down into two or more products.