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the presentation of chapter 3 atoms and molecules class 9 th​

Answer 1

Answer:

Atom:-It is smallest particle of matter. All elements are made of tiny particles called atom. These are very small in size and cannot be seen by our naked eyes. In ancient time atom was considered indivisible. The size of atom is indicated by its radius. The properties of matter depends upon the characteristics of atom.

Molecules:-It can be solid, liquid, or gases. Low melting and boilong points compared to ionic compounds. Molecule is bonding of two or more atoms. If the molecules contains atom of different elements bonded together it is called as compound. Molecules also take part in chemical reaction.

Explanation:

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