Question

define a chemical reaction​

Answer 1

Answer:

A chemical reaction is in which the bonds are broken within reactant molecules, and new bonds are formed within product molecules in order to form a new substance.

Answer 2

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⤇ When a substance itself or with any other substance reacts to produce one or more new substance it is known as chemical reaction.

• In other words,when atoms of different elements combine to form a compound or a new compound is formed by decomposition of compounds,it is known as chemical reaction.

⤇ For example , when hydrogen reacts with oxygen we get water.

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⤇ Reactants :- Substance which react in a chemical reaction are known as reactants.

⤇ Product :- A substance formed by a chemical reaction is called product.