Final Exam Review -- Types of Reactions

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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. General formula: AB + CD → CB + AD.

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What is a Single Displacement Reaction?

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A reaction where one element replaces another in a compound. General formula: A + BC → B + AC.

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What is the general formula for a Decomposition Reaction?

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AB → A + B, where a single compound breaks down into two or more simpler products.

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What does the Law of Conservation of Mass state?

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In a chemical reaction, the total mass of the reactants is equal to the total mass of the products.

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What is a Combination (Synthesis) Reaction?

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A reaction where two or more substances combine to form a single product. General formula: A + B → AB.

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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. Typically involves hydrocarbons.

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What is the general formula for a Single Replacement Reaction?

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A + BC → B + AC, where an element replaces another in a compound.

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What is the difference between a Single Replacement and a Double Replacement Reaction?

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In Single Replacement, one element replaces another in a compound; in Double Replacement, two compounds exchange ions.

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What is an example of a Decomposition Reaction?

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The breakdown of water (H2O) into hydrogen (H2) and oxygen (O2) gas: 2H2O → 2H2 + O2.

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What is an example of a Combination Reaction?

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The formation of water from hydrogen and oxygen: 2H2 + O2 → 2H2O.