Types of Chemical Reactions Test

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What is a Decomposition Reaction?

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A chemical reaction where a single compound breaks down into two or more simpler products. Example: 2Pb(NO3)2 → 2PbO + 4NO2 + O2.

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What is a Combustion Reaction?

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A chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat. Example: 2C5H10 + 15O2 → 10CO2 + 10H2O.

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What are Reactants in a Chemical Reaction?

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Substances that undergo a chemical change in a reaction, found on the left side of the equation.

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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, found on the right side of the equation.

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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: A + B → AB.

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What is a Single Displacement Reaction?

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

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What is a Double Displacement Reaction?

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A reaction where two compounds exchange ions or bonds to form two new compounds. Example: AB + CD → AD + CB.

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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; it remains constant.

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What is an Exothermic Reaction?

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A reaction that releases energy, usually in the form of heat. Example: Combustion of fuels.

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What is an Endothermic Reaction?

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A reaction that absorbs energy from its surroundings. Example: Photosynthesis.