Types of Chemical Reactions

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What is a Composition/Synthesis Reaction?

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A type of chemical reaction where two or more substances combine to form a single compound. Example: 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 substances. Example: AB → A + B.

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What is a Double Replacement Reaction?

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A type of chemical reaction where two compounds exchange components to form two new compounds. Example: AB + CD → AD + CB.

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What is a Single Replacement Reaction?

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

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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 Combustion Reaction?

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A type of chemical reaction where a substance combines with oxygen, releasing energy in the form of light or heat. Example: Hydrocarbon + O2 → CO2 + H2O.

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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 is conserved.

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What is an example of a Synthesis Reaction?

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2H2 + O2 → 2H2O (Hydrogen gas combines with oxygen gas to form water).

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What is an example of a Decomposition Reaction?

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2H2O → 2H2 + O2 (Water breaks down into hydrogen and oxygen gases).