Dalton pictured the atom as a tiny, solid, indestructible sphere.
Dalton developed an atomic theory:
- Elements are made of tiny particles called atoms.
- Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process; a chemical reaction simply changes the way atoms are grouped together.
- All atoms of a given element are identical.
- The atoms of a given element are different than those of any other element and can be distinguised from eachother by their atomic weights.
- Atoms of one element can combine with atoms of other elements to form chemical compounds.