Balancing & Types of Reactions Review

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What is a Decomposition Reaction?

Back

A reaction where a single compound breaks down into two or more simpler products. Example: Pb(NO3)2 → PbO + NO2 + O2.

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What is a Coefficient in a chemical equation?

Back

The large number in front of a chemical formula that indicates how many molecules or moles of that substance are involved in the reaction.

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What characterizes a Combustion Reaction?

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A reaction that starts with a hydrocarbon and reacts with oxygen to produce carbon dioxide and water. Example: CH4 + 2O2 → CO2 + 2H2O.

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What is a Double Replacement Reaction?

Back

A reaction where two compounds exchange ions or bonds to form two new compounds. Example: 3KOH + H3PO4 → K3PO4 + 3H2O.

Front

How do you balance a chemical equation?

Back

By adjusting the coefficients in front of the compounds to ensure the same number of each type of atom on both sides of the equation.

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What is the general form of a Synthesis Reaction?

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A reaction where two or more reactants combine to form a single product. Example: A + B → AB.

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What is the difference between a Single Replacement and a Double Replacement Reaction?

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In a Single Replacement reaction, one element replaces another in a compound. In a Double Replacement reaction, two compounds exchange components.

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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; 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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2H2 + O2 → 2H2O, where hydrogen and oxygen combine to form water.

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What is a Hydrocarbon?

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An organic compound consisting entirely of hydrogen and carbon, commonly used as fuel.