Question

Define chemical reaction ? , which changes take place during chemical reaction

Answer 1

Chemical Reaction-:
The process of breaking the old bonds of reacting substances to give products which have new bonds, is called a Chemical Reaction.

(I) In many of the chemical reactions one of the product formed is gas.

(II) In many of chemical reactions, the colour of products is different from the reactants. This shows the chemical change in reactions.

(III) Some of the chemical reactions give precipitate which may be colourful or colourless.

(IV) Many of the chemical reactions are furnished by the change in state.

Answer 2

Answer:

Explanation:

a chemical reaction is the one in which two or more substances combine together to form new susbtances by undergoing a change in their nature and properties is a chemical change.

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