Question

Example of thermal decomposition.​

Answer 1

Answer:

When calcium carbonate is strongly heated, we get calcium oxide and carbon dioxide.

CaCO3-------->CaO+CO2

Answer 2

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Example of thermal decomposition.

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Some compounds break down when heated, forming two or more products from one reactant. This type of reaction is called thermal decomposition.

Many metal carbonates can take part in thermal decomposition reactions. For example, copper carbonate breaks down easily when it is heated:

copper carbonate → copper oxide + carbon dioxide

CuCO3 → CuO + CO2

Copper carbonate is green and copper oxide is black. You can see a colour change from green to black during the reaction. The carbon dioxide produced can be detected using limewater, which turns milky.

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