Question

what an atom is ? explain in simple language for a 9th class student​

Answer 1

Answer:

Atom is the smallest particle that takes part in a chemical reaction. Atoms of different elements combine with each other in a simple whole number ratio to form compound. The relative number and kinds of atoms are constant in a given compound.

Explanation:

Atoms are defined as “the basic building blocks of matter”. It is the smallest constituent unit of matter that posses the properties of the chemical element.