ICP dead guys quiz

Ca

calcium

Ti

titanium

Zn

zinc

Hg

mercury

Ne

neon

Na

sodium

K

potassium

Fe

iron

Cu

copper

Ag

silver

Sn

tin

Sb

antimony

Pb

lead

W

tungsten

J.J. Thompson

• cathode ray experiment that led to plum pudding model

• discovered the electron

cathode ray experiment

light indicated that there were negative particles

Ernest Rutherford

• gold foil experiment

• discovered the nucleus

gold foil experiment

proved most of the atom is empty space with a small, dense, positive center “nucleus”

John Dalton

• said atoms are tiny, solid, indestructible spheres

• said atoms of the same element are exactly alike

Robert Millikan

• oil drop experiment

• found the charge and mass of a single e-

oil drop experiment

calculated the charge on each electron and the mass of each electron

Niels Bohr

• discovered electrons are in discrete energy levels

• said electrons orbit the nucleus

James Chadwick

discovered neutrons

Henry Mosely

* put periotic table in order of increasing atomic number

Werner Heisenberg

said that the location of an electron can only be described in terms of probabilities of where it might be located