Chemistry History Vocabulary 5
Feb 13, 2012
Alchemy- Early scientists (alchemist) that
developed a framework of theory,
terminology, experimental process and
basic laboratory techniques. (Thought they
could turn base metals to GOLD.)
Jābir ibn Hayyān – 9th century Muslim
chemist who took the early alchemy ideas
and created laboratories of science.
(Considered the father of chemistry)
Chemistry History Vocabulary 5
Feb 14, 2012
Robert Boyle – 1650 – refined modern
scientific method and attempted to
develop the first atomic theory of matter.
• John Dalton (1802) first published table of
relative atomic weights
Chemistry History Vocabulary 5
Feb 15, 2012
Dmitri Mendeleev (Russian scientist -1860)
He is credited as being the creator of the
first version of the periodic table of
elements. Using the table, he predicted
the properties of elements yet to be
discovered.
JJ Thompson (1898) Discovered the
electron and isotopes, and invented the
mass spectrometer.
Chemistry History Vocabulary 5
Feb 16, 2012
• Ernest Rutherford- (1911) Theorized that atoms
have their positive charge concentrated in a very
small nucleus. He is credited with first "splitting
the atom" in 1917 in a nuclear reaction between
nitrogen and alpha particles, in which he also
discovered (and named) the proton.
• Neils Bohr (1913) His atomic model introduced
the theory of electrons traveling in orbits around
the atom's nucleus.
Chemistry History Vocabulary 5
Feb 16, 2012
• Modern Electron Cloud (1926)- a model of
the atomic structure that places electrons
in shell layers not orbits around the
nucleus.
• Particle Accelerator (colliders or atom
smashers) – a machine that sends
subatomic particles in a collision course.