ATOMIC STRUCTURE
ATOM: Is the smallest particle of an element that can take part in a chemical reaction.
Atoms as the smallest particles have ability to exist on its own. Dalton was the first person to use the word ATOM.
DALTON ATOMIC THEORY
All matter are made up of tiny particles called ATOM.
Atoms can neither be created nor destroyed.
Atoms of a given element are identical. They have the same atomic mass and similar chemical properties.
Atoms of one elements can combine with atoms of other elements to form molecules.
Atoms of given element are different from those of other elements.
MODIFICATION OF DALTON ATOMIC THEORY
Atoms are made up of smaller particles called electrons, protons and neutrons.
Atom can be created or destroyed or split up by nuclear reaction/ nuclear fission.
Some element have atom of more than one type. They are called Isotopes.
Atoms of different elements combine together to form complex compound.