3-1: The Atom: Development of Models

Question 1

Democritus

Answer 1

Eventually, a piece of matter could not be cut in half anymore

Question 2

Atomos

Answer 2

“uncuttable” –> atom

Question 3

Who made the hard sphere model?

Answer 3

Dalton

Question 3

Dalton and his Atomic Theory

Answer 3

All matter is made of invisible atoms.
Atoms are arranged in different combinations to make compounds.
Atoms cannot be created nor destroyed.
Atoms of the same element are all identical.

Question 4

What part of the atom did J. J. Thomson discover?

Answer 4

Electrons

Question 5

Who made the plum pudding model?

Answer 5

J. J. Thomson

Question 6

What experiment did J. J. Thomson do?

Answer 6

Cathode ray tube

Question 7

Who made the nuclear model?

Answer 7

Ernest Rutherford

Question 8

What experiment did Ernest Rutherford do?

Answer 8

Golf Foil Experiment

Question 9

What did Ernest Rutherford discover?

Answer 9

Nucleus, Proton

Question 10

Who made the planetary model/electron shell model?

Answer 10

Niels Bohr

Question 11

What did Niels Bohr discover?

Answer 11

Orbiting electrons

Question 12

Who made the quantum mechanical model/wave mechanical model?

Answer 12

Erwin Schrodinger

Question 13

What did Erwin Schrodinger discover?

Answer 13

Electron Cloud, Orbital

Question 14

Name all scientists in order.

Answer 14

Dalton, Thomson, Rutherford, Bohr, Schrodinger

Question 15

Name all models in order.

Answer 15

Hard sphere, Plum Pudding, Nuclear, Planetary, Wave mechanical model

Question 16

Name all features discovered in order.

Answer 16

Electron , proton & nucleus, electron shells, orbitals