Daltons atomic theory

Number one

Each element is made up of tiny indestructible particles
called atoms

Number two

All atoms of a given element have identical properties,
which differ from those of other elements

Number three

Chemical compounds are formed when atoms of
different elements combine with each other in the ratio
of small, whole number. A given compound always has
the same relative numbers and types of atoms

Number 4

Chemical reactions involve reorganization of the atoms
(changes in the way they are bound together). Atoms
cannot be created, destroyed, or transformed into atoms
of another element in a chemical reaction