Main postulates of Dalton's atomic theory

1). Elements are made of extremely small/ indivisible particles called atoms.

2). Atoms of a given element are identical in size, mass, and other properties.

3). Atoms of different elements differ in size, mass, and other properties.

4). Atoms cannot be subdivided, created, or destroyed.

5). Atoms of different elements combine in simple ratios to form chemical compounds.

6). In chemical reactions, atoms are combined, separated, or rearranged.