Chemical Reactions Review

Front

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 a Synthesis Reaction?

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A synthesis reaction is a type of chemical reaction where two or more elements or compounds combine to form a single compound.

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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.

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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 element in a compound.

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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.

Front

How does temperature affect chemical reactions?

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Increased temperature generally speeds up chemical reactions by providing more energy to the reactants, leading to more frequent and effective collisions.

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What is the purpose of balancing chemical equations?

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Balancing chemical equations ensures that the Law of Conservation of Mass is followed, meaning the number of atoms of each element is the same on both sides of the equation.

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What is an example of a Synthesis Reaction?

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

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What is an example of a Decomposition Reaction?

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An example of a decomposition reaction is the breakdown of hydrogen peroxide: 2H₂O₂ → 2H₂O + O₂.

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What is an example of a Single Replacement Reaction?

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An example of a single replacement reaction is: Zn + CuSO₄ → ZnSO₄ + Cu.