When a single compound breaks down to form two or more products, what type of reaction is it called?
Answer and explanation
Correct answer: Decomposition reaction
A decomposition reaction is one in which a single compound breaks into two or more simpler substances. For example, on heating, calcium carbonate decomposes as CaCO₃ → CaO + CO₂. This is the reverse pattern of combination, where several reactants form one product. Displacement and double-displacement reactions involve replacement or exchange between substances, not the breakdown of one compound alone.
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What is the correct answer to this question?
Decomposition reaction
Why is this the correct answer?
A decomposition reaction is one in which a single compound breaks into two or more simpler substances. For example, on heating, calcium carbonate decomposes as CaCO₃ → CaO + CO₂. This is the reverse pattern of combination, where several reactants form one product. Displacement and double-displacement reactions involve replacement or exchange between substances, not the breakdown of one compound alone.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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