History of Atoms Flashcards
1
Q
- atoms unique atomic masses
- Hook and Eye Affair / Solid Sphere Model
A
John Dalton 1808
2
Q
- periodic table
- started 63 elements
A
Dmitri Mendeleev 1869
3
Q
groups periodic table
A
- alkali - metals react violently with water
- halogens - form water soluble salts
- noble gases - non reactive
4
Q
- Plum Pudding Model 1904
- Discovered Electrons 1897
A
Joeph John Thomson
5
Q
- gold foil experiment
- positive nucleus surrounded by negative cloud
A
Ernest Rutherford
6
Q
- Miniature Solar System / Planetary Model
A
Niels Bohr
7
Q
- electrons as waves
- orbitals where electrons are to be found
bohr one dimensional
schrodinger three dimensional
A
Quantum Mechanical Model
8
Q
- “atomos” “not to be cut”
- indivisible elements Leucippus
- same material, different shapes and sizes
A
Democritus
9
Q
- x-rays
- cathode tube
A
Wilhelm Roentgen
10
Q
- fire, air, water, earth
- hot, cold, dry, wet
A
Aristotle
11
Q
- Schrodinger Equation
- electron waveform
A
Erwin Schrodinger
12
Q
- neutron
- nuclear fission
A
James Chadwick
13
Q
- father of nuclear chemistry
- nuclear fission (Lise Meitner)
A
Otto Hahn
14
Q
- nuclear medicine
- I - 131 for thyroid disease
A
Glenn Seaborg
15
Q
- radioactivity
- break down of atoms releasing radiation
- husband and wife
A
Pierre and Marie Curie
