Explain Dalton's atomic theory.

(N/A) The atomic theory of matter was first proposed by John Dalton in $1808$.
$1$. Matter consists of indivisible atoms.
$2$. All the atoms of a given element have identical properties,including identical mass. Atoms of different elements differ in mass.
$3$. Compounds are formed when atoms of different elements combine in a fixed ratio.
$4$. Chemical reactions involve only the reorganization of atoms. Atoms are neither created nor destroyed in a chemical reaction.
This theory successfully explained the law of conservation of mass,the law of constant composition,and the law of multiple proportions. However,it failed to explain the existence of subatomic particles (like electrons,protons,and neutrons) and the phenomenon of static electricity generated by rubbing materials.