Types of Chemical Reactions

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What is a single replacement reaction?

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A chemical reaction where one element replaces another in a compound. Example: 3Ca + 2AlCl₃ → 3CaCl₂ + 2Al.

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What is a combustion reaction?

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A chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat. Example: C₃H₈ + O₂ → CO₂ + H₂O.

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What is a double replacement reaction?

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

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What is a synthesis reaction?

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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 is a decomposition reaction?

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A chemical reaction where a single compound breaks down into two or more simpler products. Example: 2H₂O → 2H₂ + O₂.

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What are endothermic processes?

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Chemical reactions that absorb heat from their surroundings. Example: Baking bread.

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What are exothermic processes?

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Chemical reactions that release heat to their surroundings. Example: Combustion of fuels.

Front

What is the general form of a combustion reaction?

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A hydrocarbon reacts with oxygen to produce carbon dioxide and water. Example: C₇H₁₄ + O₂ → CO₂ + H₂O.

Front

What is the difference between single and double replacement reactions?

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In single replacement, one element replaces another in a compound; in double replacement, two compounds exchange components.

Front

What is the role of a catalyst in a chemical reaction?

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