World of Atoms!!

An atom is the smallest particle which cannot be divided any further.

Atoms derive from the Greek word known as “A’tomos” which means something that cannot be divided any further.

Everything is made up of atoms.Even things as thin as an aluminum foil, has thousands of atoms.

An atom has three parts :-NucleusShellSub- atomic particlesAtom is made up of even smaller particles which I

earlier referred to as sub- atomic particles:-Neutron: It has no charge and is found in the nucleusProton: It is positively charged and it is also found in the

nucleusElectron: It is negatively charged and is found on the

shells.Because positive and negative energy react, electrons

are found in the shell and protons are found in the nucleus.

Neutrons have no charge and protons have positive charge and they are both found inside the nucleus, so automatically the nucleus’s charge becomes positive.

An atom

Shell

Some important keywords:-Atomic mass unit: A unit of mass that

describes the mass of an atom or moleculeProton: A subatomic particle that has a

positive charge and that is found in the nucleus of an atom

Neutron: A sub atomic particle that has no charge and that is found in the nucleus of an atom

Atomic number: The number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element