Download Dalton`s Atomic Theory

Dalton's Atomic Theory
Earlier we used the Particle theory of Matter to explain observations
of matter. However, this theory cannot explain everything we have just
learned regarding chemical changes.
For example it cannot explain the electrolysis of water.
John Dalton introduced a new theory to explain chemical changes.
Dalton's Atomic Theory
1.
2.
3.
4.
All matter is made up of small particles called atoms.
Atoms cannot be created, destroyed or divided into smaller
particles.
All atoms of the same element are identical in mass and size, but
are different in mass and size of other elements.
Compounds are created when atoms of different elements link
together in definite proportions.
Compounds are described by chemical formulas.
For Example: