Please enable JavaScript.
Coggle requires JavaScript to display documents.
CHEMICAL ELEMENTS, New Postulates, LAW OF DEFINITE PROPORTION - Coggle…
CHEMICAL ELEMENTS
Dalton's Atomic Theory
-
Dalton's Old Postulates
- Matter is composed of atoms
- Atoms of a certain element have the same mass.
- Atoms of different elements have different characteristics.
-
-
-
New Postulates
- Atoms are not smallest part of matter
- Subatomic particles can be divided into quarks
- Atoms with different number of neutrons
- Atoms of certain element dont always have the same mass.
- Existence of protons, electrons, and neutrons.
-
-