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history of the periodic table
2
History of the Periodic Table
Andrew Bishop 1st period
John Newlands
TOPIC 1
.British chemist
.1863
. "law of octaves":properties of elements repeted by 8.
SUBTOPIC 1
TIMELINE
SUBTOPIC 1
SUBTOPIC 2
CHARTS
PICTURES
Photo 2
Photo 1
Photo 3
Glenn Seaborg
TOPIC 2
.American chemist
. discovered plutonium in 1940
. discovered all transuranic elements 94-102
.won the nobel peace prize in 1951
Niels Bohr
TOPIC 3
.Danish scientist working under Einstein
.1913
.electrons move in specific orbits
.atoms give off or take in energy when electrons change orbit.
Demitri Mendeleev
TOPIC 4
.russian chemist
.1834-1907
. father of the modern periodic table
.worked on liquification of gasses
.worked for russian weights and measures
.published his version of the periodic table in 1869
Ernest Rutherford
TITLE
.british scientist
.1st direct probe of an atom
.named the positive center the nucleus
.atom mostly empty space
.electrons surround the nucleus
Hantoro Nagaoka
TITLE
.japanese scientist
.1904
.first saturian model of an atom
James Chadwick
TITLE
.British scientist
.proved the exsistence of the nuetron in 1932
Henry Mosley
TITLE
.discovered the atomic numbers of elements
.atomic number= the number of protons
Democritus
TITLE
.greek philosopher
.400 B.C.
.atoms are "invisible"
.atoms were specific to the material they were made of.
Al-Ghazali
TITLE
.islamic philosopher
.1100 back in the dark ages
.particles may be smaller than atoms
.atoms are eternal and material
John Dalton
TITLE
.english scientist
. 1800
.atoms were tiny hard spheres
.each element had its own atoms
.he claimed atoms cant be split
Kanad
TITLE
.hindu sage
.600 B.C.
.Atomism
.he claimed all matter is composed of 9 elements; earth, water, light, wind, time, space, mind, and soul.
JJ Thompson
TITLE
.british scientist
.1897 (after mendeleev)
.first to discover the electron
. discovered atom made of smaller particles
.found atom has a positive charge