When limestone, \(\mathrm{CaCO_3}\), is heated, it breaks down into calcium oxide and carbon dioxide. Which type of reaction is this?
Answer and explanation
Correct answer: Thermal decomposition
On heating, calcium carbonate decomposes: \(\mathrm{CaCO_3 \xrightarrow{\Delta} CaO + CO_2}\). The breaking of one compound into two or more simpler substances by heat is called a thermal decomposition reaction. In contrast, in a combination reaction, two or more substances form a single product.
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What is the correct answer to this question?
Thermal decomposition
Why is this the correct answer?
On heating, calcium carbonate decomposes: \(\mathrm{CaCO_3 \xrightarrow{\Delta} CaO + CO_2}\). The breaking of one compound into two or more simpler substances by heat is called a thermal decomposition reaction. In contrast, in a combination reaction, two or more substances form a single product.
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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