The scientist John Dalton carried out a series of experiments. He concluded that all matter was made of tiny particles called atoms. He suggested that an atom was a tiny solid ball. He published ...

An atom is so small that a single drop of water contains more than a billion atoms. Although tiny, atoms are mostly empty ...

There was little change in the understanding of the atom until John Dalton (1766-1844), an English chemist, concluded that: all matter is made of atoms, and atoms are indestructible and cannot be ...