Types of Chemical Reactions

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What is a synthesis reaction?

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A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product. Example: 2H₂ + O₂ → 2H₂O.

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What is a decomposition reaction?

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A decomposition reaction is a type of chemical 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 single replacement reaction is a type of chemical reaction where one element replaces another in a compound. General formula: A + BC → B + AC. Example: Zn + CuSO₄ → ZnSO₄ + Cu.

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What is a double replacement reaction?

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A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. General formula: AB + CD → AD + CB. Example: Na₂S + 2HCl → 2NaCl + H₂S.

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What are products in a chemical reaction?

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Products are the substances that are formed as a result of a chemical reaction, located on the right side of the chemical equation.

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What are reactants in a chemical reaction?

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Reactants are the starting substances that undergo a chemical change in a reaction, located on the left side of the chemical equation.

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What is the general formula for a combustion reaction?

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The general formula for a combustion reaction is: Hydrocarbon + O₂ → CO₂ + H₂O. Example: CH₄ + 2O₂ → CO₂ + 2H₂O.

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What is the difference between endothermic and exothermic reactions?

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Endothermic reactions absorb energy (heat) from the surroundings, while exothermic reactions release energy (heat) to the surroundings.

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What is the law of conservation of mass?

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The law of conservation of mass states 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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What is an example of a synthesis reaction?

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An example of a synthesis reaction is: 2H₂ + O₂ → 2H₂O.