Chemistry

By JonathanFi22
  • 460 BCE

    Democritus

    Democritus
    Democritus was an early greek philosopher that lived from 460-370BC. He believed that if you cut something in half multiple times, eventually if you kept on cutting it there would be a point at which it could not be cut or divided anymore. He called the substance that could not be cut anymore atomes, which means that which cannot be cut. He also believed the definition of an atom was the smallest unit of matter which still retains the identity and properties of that matter.
  • 384 BCE

    Aristotle

    Aristotle
    Aristotle was an early philosopher that refuted Democritus believed in 4 elements, Fire, earth, air and water. Because of his disagreements with Democritus, there was a 2,000 year science war of rebuttals and proofs.
  • Period: 1 BCE to

    The history of chemistry

  • 332

    King Alexander

    King Alexander
    King Alexander the Great conquered Egypt in 332 BC. Because of this the Greeks thought that Egyptian religion and the 4 elements of nature were to be mixed. This was called Khemia, which means Egypt in Greek. The word alchemy is also derived from the word Khemia.
  • 600

    Arabs and chemistry

    In 600 AD Arabs continued the research being done and spread it west.

  • Chemistry beliefs are split

    Chemistry beliefs are split
    In the 16th century Alchemists in Europe separated into 2 different groups. In the west they decided that Alchemy should be more of a scientific thing. They invented distillation, percolation, extraction and rudimentary chromatograph. The other side believed that Alchemy was more of a religious and spiritual thing. They also continued trying to turn things gold.

  • The Phlogiston Theory

    The Phlogiston Theory
    from the Ancient Greek phlogistón "burning up"
    first stated in 1667 by Johann Joachim Becher
    postulated the existence of a fire-like element called "phlogiston",
    which was contained within combustible bodies and released
    during combustion.
    A substance that burned did so because it contained Phlogiston.
    Carbon Dioxide, no longer capable of burning was called
    “dephlogisticated air”

  • Vitalism

    Vitalism
    Vitalism: Living organisms are fundamentally different from non-living entities
    because they contain a “vital spirit”.
    Living things are thus governed by different principles than are
    inanimate things.