What is an Atom?
Author:Karnataka Board
9th Karnataka Board
IMPORTANT
What is an Atom?: Overview
This topic describes atoms and how atoms constitute elements of matter. We also discuss the constituents of atoms, i.e., neutron, proton and electron. It also includes the symbols of atoms of different elements.
Important Questions on What is an Atom?
EASY
IMPORTANT
Why is it not possible to see an atom with naked eyes?

MEDIUM
IMPORTANT
Define the atomic mass unit.

MEDIUM
IMPORTANT
Which postulate of Dalton's atomic theory can explain the law of definite proportions?

EASY
IMPORTANT
What are polyatomic ions? Give examples.
