Atoms, Molecules And Ions Flashcards
(21 cards)
all molecules are not compounds, all compounds are molecules. true/false
true
what did democritus describe the atom as
indivisible, that’s why he called it Atomos as in indivisible
what’s democritus life span
460-370BC
What’s Aristotle life span
384-322B.C
What was Aristotle famous idea
he disagreed with democritus and believed that matter can be divided forever
what was John dalton’s life span
1776-1844
what year did John Dalton introduce his idea
1803
what were the laws John Dalton’s Atomic theory explained
definite proportion
conservation of mass
multiple proportion
who proposed the idea of isotopy
Frederick Soddy
what year did Frederick Soddy propose the idea of isotopy and won a nobel prize for it
1912, 1921
frederick Soddy life span
1877-1956
who discover that atoms might have a electrical component
1830
who discovered the cathode ray in 1879
william crookes
who discovered the electrons
J.J Thompson
what experiment did J.J conduct to discover the electron and what year
cathode ray experiment and 1897
what was the model of atom proposed by JJ Thompson
plum pudding model
what year did thompson discover isotopes to surpport williams
1904
who proposed the planetary model of atom
Neil Bohr and 1913
who discover the nucleus
ernest ruther ford
what experiment did rutherford conduct
gold foil experiment
