Chemistry · Some Basic Concepts of Chemistry

Which postulate of Dalton's atomic theory directly accounts for the Law of Conservation of Mass in a chemical reaction?

1. A
   Chemical reactions involve reorganisation of atoms; atoms are neither created nor destroyed.
2. B
   All atoms of a given element have identical properties including mass.
3. C
   Compounds are formed when atoms of different elements combine in a fixed ratio.
4. D
   Matter consists of indivisible atoms.