M2: The Atomic Theory

Question 1

He and his pupil, Domocritus, thought that you will eventually reach the point where you can no longer divide an object in half called atomos

Answer 1

Leucippus

Question 2

Means uncuttable or indivisible

Answer 2

Atomos

Question 3

Father of Modern Science

First to use the term atom

Answer 3

Democritus

Question 4

He was largely inspired by the ideas of leucippus and democritus about atoms

Introduced the Billiard Ball Model

Answer 4

John Dalton

Question 5

He discovered the proton

Answer 5

Eugen Goldstein

Question 6

He discovered electrons

Introduced Plum-Pudding Model

Answer 6

Joseph John Thomson

Question 7

He discovered electrons

Introduced Rutherford’s Atomic Model

Answer 7

Ernest Rutherford

Question 8

states that the negatively charged electrons (raisins) are surrounded by a positively charged electron

Answer 8

Plum-Pudding Model

Question 9

He introduced the Bohr Model of Atom

Answer 9

Niels Bohr

Question 10

are composed of smaller subatomic particles
such as the proton, neutron, and electron.

Answer 10

Atom

Question 11

is a small, dense, positively charged center of
the atom which contains most of the atom’s mass

Answer 11

Nucleus

Question 12

positively (+) charged particles (symbol: )
Neutrons - particles that have no charge (neutral), but
contribute to the atom’s mass (symbol: )

Answer 12

Protons

Question 13

It makes up almost all of the mass of the atom w/
protons;

Answer 13

Nuetron

Question 14

an area around the nucleus
where electrons are likely to be found
orbiting the nucleus in several levels

Answer 14

Electric Cloud

Question 15

Confirmed that cathode rays are fundamental particles
that are negatively charged (known as electrons or )

Answer 15

Electron