Types of Chemical Reactions

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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 substances. Example: 2H₂O → 2H₂ + O₂.

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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: Cu + 2Ag(NO₃) → 2Ag + Cu(NO₃).

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What is a Synthesis Reaction?

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A reaction where two or more simple substances combine to form a more complex substance. Example: 2H₂ + O₂ → 2H₂O.

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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: Na₂S + 2HCl → 2NaCl + H₂S.

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What are Reactants?

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

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What are Products?

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Substances that are formed as a result of a chemical reaction. They are found on the right side of a chemical equation.

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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 Oxidation Reaction?

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A reaction that involves the loss of electrons or an increase in oxidation state. Example: 2Mg + O₂ → 2MgO.

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What is a Redox Reaction?

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A reaction that involves both reduction and oxidation processes. Example: 2Na + Cl₂ → 2NaCl.

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What is an Endothermic Reaction?

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A reaction that absorbs energy from its surroundings, usually in the form of heat. Example: Photosynthesis.