Atomic Models Test

Question 1

What does atomos mean

Answer 1

Indivisible

Question 2

Proposed atomic theory, an atom is an indivisible, indestructible, tiny sphere

Answer 2

John dalton-1803

Question 3

Atoms of the same element are exactly alike, atoms of different elements are different

Answer 3

John dalton-1803

Question 4

Who proposed the “plum pudding” model

Answer 4

J.J Thomson-1898?

Question 5

Who discovered electrons?

Answer 5

J.J Thomson

Question 6

Who shot positively charged particles at a thin sheet of gold foil

Answer 6

Ernest Rutherford-1911

Question 7

Proposed that atoms had a small dense positively charged center called the nucleus

Answer 7

Ernest Rutherford-1911

Question 8

All positively charged particles of the atom are in the nucleus, all negatively charged electrons were scattered outside the nucleus

Answer 8

Ernest Rutherford-1911

Question 9

Who proposed that electrons move in definite orbits around the nucleus?

Answer 9

Niels Bohr-1913

Question 10

His atomic model placed electrons in specific energy levels to explain why they did not spiral toward and collide with the nucleus

Answer 10

Niels Bohr-1913

Question 11

Who proposed in the wave/modern model that electrons don’t move around an atom in a definite path?

Answer 11

Erwin Schrodinger-1933

Question 12

What was daltons model called?

Answer 12

Billiard ball model

Question 13

Who proposed that electrons orbit the nucleus in shells

Answer 13

Niels Bohr

Question 14

Who proposed that electrons can be bumped up to a higher shell if hit by an electron or a photon of light

Answer 14

Niels Bohr

Question 15

Who proposed that all matter is made up of atoms

Answer 15

John dalton-1803

Question 16

Who proposed that atoms are mostly empty

Answer 16

Ernest Rutherford

Question 17

What are isotopes

Answer 17

Atoms of the same element that have different numbers of neutrons

Question 18

First to develop the idea that matter was made of particles called atoms

Answer 18

Democritus -460 B.C.

Question 19

Are atoms positive or negative?

Answer 19

Neither they are neutral

Question 20

The central part of an atom is the what?

Answer 20

The nucleus

Question 21

What carries electrons?

Answer 21

The electron cloud

Question 22

What are the 3 subatomic particles?

Answer 22

Protons, neutrons, and electrons

Question 23

Where are protons located?

Answer 23

Inside the nucleus

Question 24

Do protons have mass?

Answer 24

Yes

Question 25

Are protons positively or negatively charged?

Answer 25

Positively charged

Question 26

All atoms of a particular element have the same # of what?

Answer 26

Protons

Question 27

Where are electrons located?

Answer 27

Outside the nucleus and inside the electron cloud

Question 28

Are electrons positively or negatively charged?

Answer 28

Negatively charged

Question 29

Most mass of an atom comes from the what?

Answer 29

Nucleus

Question 30

Electrons have very lil what?

Answer 30

Mass about 1/1836 the mass of the proton

Question 31

Electrons and protons are what?

Answer 31

Equal therefore they cancel eachother out there is never more of one than another

Question 32

Where are neutrons located?

Answer 32

Inside the nucleus

Question 33

What kind of charge do neutrons have?

Answer 33

A neutral charge

Question 34

The neutron has the same mass as the what?

Answer 34

Proton

Question 35

The atomic number in the periodic table is always the what?

Answer 35

Whole number

Question 36

Atomic mass is a what on the periodic table

Answer 36

Decimal