Question

State any 4 postulates of Dalton's Atomic theory of matter

Answer 1

1. All matter is made up of atom.
2.A chemical reaction is rearrangement of atoms.
3.Compounds are formed by combination of two or more different kinds of atoms.
4.All atoms of given element are identical in mass and properties.

Answer 2

atoms are identical in mass 
all matter is made of atoms
compounds are formed by combination of 2 or more atoms
a chemical reaction is a rearrangement of atoms