Chemical Reaction Types & Balancing

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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: CoCO₃ → CoO + CO₂.

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What are the coefficients required to balance the equation: C₂S₂ + O₂ → CO₂ + S₂O?

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2, 5, 4, 2.

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What is a Synthesis Reaction?

Back

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

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What indicates a precipitation reaction?

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The formation of a solid, indicated by (s) in the reaction. Example: AgNO₃ (aq) + NaOH (aq) → AgOH (s) + NaNO₃ (aq).

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What is an Oxidation-Reduction (redox) Reaction?

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A type of reaction that involves the transfer of electrons between two substances, resulting in a change in oxidation states. Example: Rust formation.

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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: Zn + CuSO₄ → ZnSO₄ + Cu.

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What is a Double Replacement Reaction?

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A reaction where two compounds exchange ions or bonds to form two new compounds. Example: AgNO₃ + NaCl → AgCl + NaNO₃.

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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 a Balanced Chemical Equation?

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An equation where the number of atoms for each element is the same on both sides of the reaction.

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What is a Catalyst?

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A substance that increases the rate of a chemical reaction without being consumed in the process.