Question

Give an example of chemical change where heat is absorbed. And explain also...​

Answer 1

Answer:

Nice question

Explanation:

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. Understanding chemical changes is a major part of the science of chemistry.

Answer 2

The boiling of water is an example of chemical change where heat is absorbed.

• When in a chemical change, heat is absorbed by the reactants to produce the products, the reaction is called an Endothermic reaction.
• In an endothermic reaction, heat is very necessary as a source of energy to start the reaction. Sometimes we need to manually provide the necessary heat for an Endothermic reaction, or sometimes the reactants automatically absorb the heat from the surroundings.
• In the case of boiling water, the water molecules absorb the heat which needs to be provided from some source. Then the molecules start to move very quickly and then the inter-molecule bonds start to break. Then the water molecules go into the free air and turn into gas.

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