Question

Give an example of decomposition reaction.Describe an activity to illustrate such a reaction by heating.

Answer 1

milk is an example .when we heat milk ie provided after 3or 4 days this may change into curd(it will be separated into solid and liquid state)

Answer 2

When calcium carbonate is heated it is changed into calcium oxide and carbon dioxide.

Explanation:

• the main energy for the decomposition reaction usually comes from heat and it is known as thermal decomposition. We should first take calcium carbonate crystals. Then it is exposed to heat suddenly , we can find that the fumes of carbon dioxide is coming out.

• Calcium oxide can be seen as the precipitate which occurs at the bottom of the frame the balance chemical reaction of the equation is given below

CaCO3(s) → CaO + CO2(g)

To know more about thermal decomposition,

decomposition brought about by heat is known as thermal .

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