Evolving theories of matter

Greek Philosopher Democritus Questions the smallest forms of matter

Greek philosopher Aristotle supports A different hypothesis, gaining more popularity

Andreas Libau publishes "Alchemia", the first chemistry text

Robert Boyle experiments with behaviours of gases

Chemistry becomes its own major Science

Antoine Laurent creates a naming system, creating a baseline for other scientists

John Dalton suggests matter is made of elements, and defines pure substances

Antoine Laurent is executed by guillotine

J.J Thomson proposes the "raisin Bun Model" of the Atom

J.J Thomson continues Dalton's work on subatomic particles

Japanese physicist Hantaro Nagaoka refines the atomic model

Ernest Rutherford wins Nobel Prize for work on radioactivity

Niels Bohr wins a Nobel prize in physics for studying the atom

Stone Age ~8000 B.C.E.

Copper Age

Iron Age

Alchemy Period

scientific investigators become more like scientists today

Ernest Rutherford carries out experiments at McGill University

Developments in oil and juicing techniques