Atomic Scientists

Question 1

JJ Thomson

Answer 1

Discovered the electron

Question 2

Answer 2

Atomic Model created by JJ Thomson

Question 3

Mendeleev

Answer 3

1st periodic table arranged by mass

Question 4

Answer 4

Periodic table arranged by mass (Mendeleev)

Question 5

Millikan

Answer 5

Exact charge of an electron

Question 6

Answer 6

Oil drop experiment to determine electron charge (Millikan)

Question 7

Moseley

Answer 7

Modern periodic table arranged by atomic number

Question 8

Answer 8

Modern periodic table arranged by atomic number (Moseley)

Question 9

Planck

Answer 9

Quantum nature of energy

Question 10

Rutherford

Answer 10

• Discovered nucleus

Question 11

Answer 11

Atomic Model created by Rutherford

Question 12

Schrodinger

Answer 12

Modern mathematical model
- electrons in cloud

Question 13

Answer 13

Atomic Model created by Erwin Schrödinger

Question 14

Bohr

Answer 14

Planetary model of atom

Question 15

Answer 15

Atomic Model created by Niels Bohr

Question 16

Chadwick

Answer 16

Discovered Neutron

Question 17

Answer 17

Discovery of neutron within nucleus

Question 18

Dalton

Answer 18

Atomic theory

Question 19

Answer 19

Model of atom created by Dalton

Question 20

de Broglie

Answer 20

Particle and wave density

Question 21

Answer 21

Model of atom that introduced the wave-particle theory of the atom

Question 22

Democritus

Answer 22

Proposed idea of atoms in 4th century BC

Question 23

Einstein

Answer 23

Light can behave as a particle (photon)

Question 24

Heisenberg

Answer 24

Uncertainty principle