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Atomic Structure

Total questions: 110

Worksheet time: 9hrs 10mins

Name
Class
Date
1.

Which of the following shows the correct order of Atomic Theory Timeline

a)

Rutherford, Bohr, Dalton, Democritus, Thomson

b)

Bohr, Democritus, Thomson, Rutherford, Dalton

c)

Dalton, Thomson, Rutherford, Bohr, Democritus

d)

Democritus, Dalton, Thomson, Rutherford, Bohr

2.

How did Rutherford discovered the proton?

a)

through the cathode-ray experiment

b)

through the Gold-foil experiment

c)

through studying the wave property of an electron

d)

through injecting gamma rays in an atom

3.

This particle balances the charges from the protons to make the atom neutral

a)

proton

b)

electron

c)

neutron

d)

nucleus

4.

Rutherford discovered what part of the atom

a)

nucleus

b)

neutron

c)

proton

d)

electron

5.

He claimed that matter was made of small, hard particles that he called “atomos.”

a)

Democritis

b)

Dalton

c)

Moseley

d)

Einstein

6.

What will happen when an electron jumps from a higher energy level to a lower energy level?

a)

Nothing will happen.

b)

Energy is absorbed.

c)

Energy is emitted in the form of light.

d)

The electron will leave the ground state.

7.

_____ is the Greek word meaning indivisible.

a)

Atom

b)

Atomic

c)

Atomos

d)

Atomis

8.

DO YOU REMEMBER.....

You are observing 2 quantities. As one decreases, the other increases by the same amount. These quantities are _____ proportional.

a)

inversely

b)

not

c)

directly

d)

adversely

e)

succinctly

9.

Thomson Experimented with ______

a)

Gold Foil

b)

alpha particles

c)

cathode rays

d)

protons

10.

Who gave the idea that the atom is mostly made up of empty space?

a)

Ernest Rutherford

b)

JJ Thomson

c)

Erwin Schrodinger

d)

Neils Bohr

11.
Rutherford did his famous gold foil experiment. In his experiment he fired a beam of what at gold foil?
a)
electricity
light
b)
alpha particles
c)
beta particles
d)
gamma rays
12.

Rutherford experimented with ____

a)

Gold foil and alpha particles

b)

Cathode rays and alpha particles

c)

electron and alpha particles

d)

gold foil and cathode rays

13.
a)

A

b)

B

c)

C

d)

D

14.
a)

A

b)

B

c)

C

d)

D

15.
a)

A

b)

B

c)

C

d)

D

16.
a)

A

b)

B

c)

C

d)

D

17.
a)

A

b)

B

c)

C

d)

D

18.
a)

A

b)

B

c)

C

d)

D

19.
a)

A

b)

B

c)

C

d)

D

20.
a)

A

b)

B

c)

C

d)

D

21.
a)

A

b)

B

c)

C

d)

D

22.
a)

A

b)

B

c)

C

d)

D

23.
a)

A

b)

B

c)

C

d)

D

24.
a)

A

b)

B

c)

C

d)

D

25.
a)

A

b)

B

c)

C

d)

D

26.
a)

A

b)

B

c)

C

d)

D

27.

Who proposed the idea that everything is made up from tiny little particles that can't be broken down any further?

a)

Democritus

b)

Ernest Rutherford

c)

Niels Bohr

d)

John Dalton

28.

Which scientist described atoms as solid spheres and suggested that different types of spheres might make up the different elements?

a)

Democritus

b)

Niels Bohr

c)

John Dalton

d)

J.J. Thompson

29.

Who came up with the plum pudding model of the atom, suggesting that it was a general ball of positive charge with discrete electrons stuck in it?

a)

J.J. Thompson

b)

Niels Bohr

c)

John Dalton

d)

Ernest Rutherford

30.

What did Ernest Rutherford and his students discover in their experiments with alpha particles and a thin sheet of gold?

a)

The alpha particles caused the gold sheet to disintegrate

b)

The alpha particles were absorbed by the gold sheet

c)

The alpha particles were deflected to the side

d)

The alpha particles passed right through the gold sheet

31.

What did Rutherford's nuclear model propose about the structure of the atom?

a)

The atom had a compact nucleus containing all the positive charge

b)

The atom was a solid sphere with a cloud of negative charge around it

c)

The atom was a general ball of positive charge with discrete electrons stuck in it

d)

The atom had a cloud of negative electrons surrounding a positive nucleus

32.

What was the flaw in Rutherford's nuclear model of the atom?

a)

The model did not account for the existence of electrons

b)

The model did not explain the presence of protons

c)

The model did not prevent the collapse of the atom

d)

The model did not include the concept of neutrons

33.

Who suggested that the electrons orbited the nucleus in a similar way to how the planets orbit the sun?

a)

Ernest Rutherford

b)

Niels Bohr

c)

John Dalton

d)

J.J. Thompson

34.

What did James Chadwick provide evidence for in the nucleus of the atom?

a)

Electromagnetic waves

b)

Neutral particles

c)

Positively charged particles

d)

Negatively charged particles

35.

What did John Dalton describe atoms as?

a)

Plum pudding

b)

Nuclear models

c)

Solid spheres

d)

Tiny particles

36.

What did J.J. Thompson's experiments show about the structure of the atom?

a)

The atoms had a compact nucleus

b)

The atoms were made up of tiny particles

c)

The atoms contained negatively charged particles

d)

The atoms were solid spheres

37.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

38.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
39.
Measure mainly of the nuclear particles: protons + neutrons
a)
Subatomic Particles
b)
Atomic Number
c)
Atomic Mass
d)
Gluons
40.
What is atomic number?
a)
Number of protons in an atoms 
b)
Number of neutrons in an atom
c)
Mass of an atom
d)
Charge on an atom
41.
Which subatomic particles are found in the nucleus of an atom?
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons, Neutrons and Electrons
42.
The total number of protons and neutrons in an atom is called the...
a)
Atomic number
b)
Proton number
c)
Mass number
d)
Weight number
43.
How many protons does an aluminium atom have? (Use the image to help you)
a)
27
b)
14
c)
40
d)
13
44.
How many neutrons does a sodium atom have? (Use the image to help you)
a)
23
b)
11
c)
12
d)
34
45.
Complete the missing label on the diagram.
a)
Neutron
b)
Centre
c)
Nucleus
d)
Sub atomic particle
46.
Atoms of the same element must always have the same number of _________
a)
electrons
b)
neutrons
c)
isotopes
d)
protons
47.
The mass number of an element that has18 protons, 18 electrons, and 19 neutrons is _____.
a)
12.5
b)
13
c)
25
d)
37
48.

What are the subatomic particles?

a)

Protons, Electrons, Neutrons

b)

Molecules, and atoms

c)

Electrons, Protons, Nucleus

d)

Nucleus, and Electrons

49.

What is this subatomic particle that has positive charge?

a)

Electron

b)

Neutron

c)

Proton

d)

Megatron

50.

What is this subatomic particle that has negative charge?

a)

Electron

b)

Neutron

c)

Proton

d)

Megatron

51.

What is this subatomic particle that has no charge?

a)

Electron

b)

Neutron

c)

Proton

d)

Megatron

52.

What is the smallest particle of an ELEMENT, and it has also all the properties of it?

a)

Molecules

b)

Nucleus

c)

Subatomic particle

d)

Atoms

53.

What is the small, DENSE REGION consisting of protons and neutrons at the CENTER of an atom?

a)

Molecules

b)

Nucleus

c)

Subatomic particle

d)

Atoms

54.

It is consisting of two or more atoms combined together in a specific arrangement. It is the smallest particle of compound that can exist independently. What is this?

a)

Molecules

b)

Nucleus

c)

Subatomic particle

d)

Atoms

55.

Where can we find the location of the Atomic Nucleus?

a)

Center

b)

Left Side

c)

Right Side

d)

Above

56.

What is the atomic model proposed by J.J Thompson, and suggest that negatively-charged electrons were embedded in a kind of cloud or soup of positive charge?

a)

Asia's Next Top Model

b)

Quantum Atomic Model

c)

Plum Pudding Model

d)

Nuclear Model

57.

What is the name of experiment conducted by Ernest Rutherford's Team, in testing the validity of Plum Pudding Model, which then resulted to introducing of the NUCLEAR MODEL of an Atom?

a)

Planetary Model Experiment

b)

Alpha particle scattering Experiment

c)

Paro-Paro G Experiment

d)

Quantum Particle Experiment

58.

Who was the Greek philosopher who called the smallest particle of matter an "atom"?

a)

Democritus

b)

Aristotle

c)

J.J Thompson

d)

Einstein

59.
In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.
a)
Atoms
b)
Parts
c)
Molecules
d)
Hydrogen
60.

All matter is made of

a)

energy

b)

atoms

c)

electrons

d)

compounds

61.

The smallest particle of an element that still represents that element.

a)

Nucleus

b)

electron

c)

proton

d)

atom

62.

Which scientist discovered the electrons?

a)

Dalton

b)

Thomson

c)

Atristotle

d)

Bohr

63.

Bohr discovered that electrons are located in

a)

the nucleus

b)

inside protons

c)

electron cloud

d)

circular orbits around the nucleus

64.

What is a particle with one negative charge called?

a)

electron

b)

proton

c)

quark

d)

neutron

65.

What is a particle with one positive charge called?

a)

proton

b)

electron

c)

neutron

d)

quark

66.

What is the neutral particle found in the nucleus called?

a)

proton

b)

neutron

c)

electron

d)

quark

67.

What is the center of an atom called?

a)

nucleus

b)

electron cloud

c)

proton center

d)

photon center

68.

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

a)

Atom is mostly empty space

b)

The nucleus is positively charged

c)

The atom has a small dense nucleus

d)

All answers are correct

69.
Who is the scientist who proposed the "solar system" model of an atom where the electrons orbit around the nucleus?
a)
Democritus
b)
Niels Bohr
c)
Ernest Rutherford
d)
Chadwick
70.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
71.

The majority of an atom's mass exists ...

a)

In the nucleus

b)

In the electron cloud

c)

In the space between the nucleus and the electrons

d)

In the neutrons

72.
How many Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
4
73.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
74.
which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
75.
An atom is electrically neutral when
a)
protons and neutrons are the same
b)
protons and electrons are the same
c)
neutrons and electrons are the same
d)
neutrons balance the protons and electrons
76.
Different isotopes have...
a)
different masses
b)
different atomic numbers
c)
different electrons
d)
different protons
77.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
78.

The diagram represents the neutral lithium atom. All particles in the atoms are shown on the diagram. How many electrons does in this diagram?

(a)  

79.

The diagram represents the neutral lithium atom. All particles in the atoms are shown on the diagram. How many neutrons does in this diagram?

(a)  

80.

Who's developed the idea that an atom consist of electrons that surrounded by protons like plum surrounded by pudding?

(a)  

81.

A isotope of Iridium -192 is written using this symbol. How many protons does a nucleus of Iridium-192 contains?

(a)  

82.

A isotope of Iridium -192 is written using this symbol. How many neutrons does a nucleus of Iridium-192 contains?

(a)  

83.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

84.

The subatomic particle that decides what an atom is.

a)

Electron

b)

Neutron

c)

Neutrino

d)

Proton

85.

What do the red balls represent?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Neutrinos

86.

What is the region in the middle of the atom called?

a)

The Nuclide

b)

The Energy Levels

c)

The Electron Shells

d)

The Nucleus

87.

What do the green balls represent?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Neutrinos

88.

Carbon-12 and Carbon-14 are both isotopes of Carbon. What do the 12 and 14 mean?

a)

The total number of protons in the nucleus

b)

The total number of neutrons in the nucleus

c)

The total number of nucleons in the nucleus

d)

The total number of electrons around the nucleus

89.

What is the name of the isotope in the AZE notation above?

a)

Carbon-6

b)

Carbon-8

c)

Carbon-14

d)

Carbon-20

90.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
91.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
92.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
93.
Discovered the nucleus of the atom through the Gold Foil Experiment
a)
Rutherford
b)
Chadwick
c)
Thomson
d)
Dalton
94.
The only element with no neutrons in its nucleus.
a)
Oxygen
b)
Helium 
c)
Hydrogen
d)
Lithium
95.

Explain how the Rutherford gold foil experiment correctly advanced atomic theory away from the plum pudding mode

a)

it proved the atom contained positive AND negative charges.

b)

It proved the positive charge is concentrated in a relatively small region of the atom.

c)

It proved the atom contains protons, electrons, and neutrons.

d)

It proved that atoms are spherical in shape and not shaped like pudding

96.

In the famous gold foil experiment, radioactive particles were fired at a very thin sheet of gold foil. Most of the particles passed straight through the gold foil. Only about 1 in every 8000 particles were deflected. The gold foil experiment showed the researchers that the atom is made mostly of

a)

protons

b)

electrons

c)

neutrons

d)

empty space

97.

Carbon-12 has an atomic number of 6 and a mass number of 12. How many electrons would be found in a neutral atom of carbon-12?

a)

6

b)

12

c)

18

d)

24

98.
What element contains 26 protons?
a)
Iron
b)
Sodium
c)
Aluminum
d)
Helium
99.
Which subatomic particle has a positive (+) charge?
a)
Neutron
b)
Proton
c)
Electron
100.

What is the name of this atom?

a)

helium

b)

beryllium

c)

carbon

d)

oxygen

101.
How many protons does this atom have?
a)
3
b)
6
c)
4
d)
2
102.

What would be the mass number of this atom?

a)

4

b)
6
c)

10

d)

22

103.

Which of the following is the correct combination of nucleons (protons or neutrons) in this isotope of carbon?

a)

14 protons and 6 electrons

b)

8 neutrons and 6 protons

c)

6 neutrons and 8 protons

d)

6 protons and 8 electrons

104.

The image shows three isotopes of hydrogen.

Which of the following correctly describes the meaning of an isotope?

a)

Atoms with the same number of electrons and neutrons, but different numbers of protons.

b)

Atoms with the same number of protons and neutrons, but different numbers of electrons.

c)

Atoms with the same number of electrons and protons, but different numbers of neutrons

d)

Atoms with the same number of electrons, neutrons and protons.

105.

In the Rutherford scattering experiment one observation noted was that most alpha particles fired at the gold foil passed straight through. What does this tell us about the structure of the atom?

a)

The nucleus was positively charged.

b)

The nucleus was negatively charged.

c)

The atom was made up mostly of empty space.

d)

The atom was very dense and tightly packed with nucleons.

106.

In the Rutherford scattering experiment one observation noted was that some alpha particles fired at the gold foil were backscattered. What does this tell us about the structure of the atom?

a)

The nucleus was positively charged.

b)

The nucleus was negatively charged.

c)

The atom was made up mostly of empty space.

d)

The atom was very dense and tightly packed with nucleons.

107.

Which of the following are methods for protecting a person from nuclear radiation?

a)

Distance

b)

Shielding

c)

Limiting time of exposure

d)

All of the above

108.

Which device is used to detect nuclear radiation?

a)

GM tube

b)

Rutherford tube

c)

Curie tube

d)

Giga-counter

109.

Which type of nuclear radiation travels at the speed of light?

a)

Alpha radiation

b)

Beta radiation

c)

Gamma radiation

d)

Neutron radiation

110.

Particles in an atom that are neutral which means they have no charge are _____.

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

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