wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Atomic History and Electrons

Total questions: 92

Worksheet time: 4hrs 4mins

Name
Class
Date
1.

Who was the first contributor to the atomic theory?

a)

John Dalton

b)

Ernest Rutherford

c)

JJ Thompson

d)

Democritus

e)

Neils Bohr

2.

Which scientist was the the most recent contributor to the atomic theory?

a)

John Dalton

b)

Ernest Rutherford

c)

JJ Thomson

d)

Democritus

e)

Neils Bohr

3.

What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?

a)

Neils Bohr, Ernest Rutherford, JJ Thomson, John Dalton, & Democritus

b)

JJ Thomson, John Dalton, Neils Bohr, Ernest Rutherford, & Democritus

c)

Democritus, John Dalton, JJ Thomson, Ernest Rutherford, and Neils Bohr

d)

John Dalton, Neils Bohr, JJ Thomson, Democritus, & Ernest Rutherford

4.

What were J. J. Thomson's three contributions to the atomic theory?

a)

Discovered the electron

b)

Discovered the nucleus -did the gold foil experiment

c)

Used the cathode ray tube in his discovery

d)

Created a model of the atom with electrons moving around the nucleus in fixed orbits

e)

Created the "plum pudding" model of the atom

5.

What are two facts about Democritus's?

a)

Greek philosopher

b)

Created the atomic theory

c)

Used the cathode ray tube in his discovery

d)

Believed that the universe was made of tiny "uncuttable" particles

e)

Discovered that the atom is mostly empty space

6.

What is Neils Bohr's contribution to the atomic theory?

a)

Created the atomic theory

b)

Created a model of the atom with electrons moving around the nucleus in a fixed orbits

c)

Discovered that the proton had a positive charge

d)

Believed that atoms of a given element are identical

e)

Discovered the electron

7.

What were Ernest Rutherford's three contributions to atomic theory?

a)

Discovered that the atom is mostly empty space

b)

Discovered the nucleus- did the gold foil experiment

c)

Used the cathode ray tube in his discovery

d)

Discovered the electron

e)

Discovered that the proton had a positive charge

8.
Which model of the atom proposed that atoms were positive spheres with negative electrons in them?
a)
Heliocentric Model
b)
Solid Sphere Model
c)
Plum Pudding Model
d)
Planetary Model
9.
Which scientist saw the atom as a solid sphere?
a)
Dalton
b)
Thomson
c)
Rutherford
d)
Bohr
10.
Who came up with this model of an atom?
a)
J.J. Thompson
b)
Ernest Rutherford
c)
Neils Bohr
d)
James Chadwick
11.
Who's model is this?
a)
Thomson
b)
Rutherford
c)
Democritus
d)
Bohr
12.
Discovered particles in the nucleus of atoms, neutrons
a)
Niels Bohr
b)
Ernest Rutherford
c)
J.J. Thomson
d)
James Chadwick
13.
In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.
a)
Atoms
b)
Parts
c)
Molecules
d)
Hydrogen
14.
In the Thomson Model, he discovered the existence of what particle?
a)
Electrons
b)
Protons
c)
Neutrons
d)
Quarks
15.
Rutherford’s experiment determined that the nucleus of an atom is tiny, dense and  ______ charged. 
a)
neutrally
b)
negatively
c)
positively
16.
Democritus believed that the smallest particles, were atomos, the Greek word for 
a)
small
b)
uncut or indivisible
c)
basic
17.

Mass is neither created nor destroyed during chemical reactions or physical changes.

a)

Law of multiple proportions

b)

law of definite proportions

c)

law of scientific theory

d)

law of conservation of mass

18.

states that, regardless of the amount, a compound is always composed of the same elements in the same proportion by mass

a)

law of definite proportions

b)

law of conservation of mass

c)

law of multiple proportions

d)

periodic table

19.
Determined that electron paths cannot be predicted and exist inside the Electron Cloud.
a)
Schrodinger & Heisenberg
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
20.

How is the Bohr model different from the Rutherford model?

a)

Electrons are in the center

b)

Bohr has negatives floating while Rutherford has them on rings

c)

Rutherford has negatives floating while Bohr has them on rings

d)

Bohr has them in the center and Rutherford has them on the outside

21.
Who is credited with developing the atomic theory?  (Sometimes called the father of atomic theory)
a)
John Dalton
b)
J. J. Thomson
c)
Earnest Rutherford
d)
Niels Bohr
22.
What can you conclude from the fact that scientists continue to update the atomic model?
a)
New information about atoms continues to be discovered
b)
Old information about atoms is completely useless
c)
Scientists did not have any information about atoms until a few years ago
d)
Scientists still have no idea what atoms look like
23.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
24.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
25.
What is the maximum number of electrons that an orbital can have?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
26.
How many valence electrons are represented here?
a)
7
b)
5
c)
2
d)
8
27.
How many d orbitals are there in a given sublevel?
a)
1
b)
3
c)
5
d)
7
28.
How many p orbitals are there in a sublevel?
a)
2
b)
1
c)
4
d)
3
29.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
30.
What is this element? 
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
31.
What atom matches this electron configuration?
[Xe] 6s2 4f14 5d9
a)
Mercury
b)
Gold
c)
Platinum
d)
Thallium
32.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
33.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
34.
How many valence electrons does Chlorine have?
a)
5
b)
2
c)
7
d)
5
35.
How many valence electrons does phosphorus have?
a)
5
b)
2
c)
8
d)
15
36.
What element has the valence shell configuration
3s2 3p2
a)
Al
b)
B
c)
Si
d)
Ga
37.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
38.
What noble gas should be used to write the shorthand configuration for Te?
a)
Ar
b)
Kr
c)
Xe
d)
Sb
39.
Identify the element in Period 5 that has 1 valence electron?
a)
Rb
b)
Nb
c)
Ag
d)
Sb
40.
What element in Period 4 has 5 valence electrons?
a)
Zr
b)
As
c)
V
d)
Sb
41.
Which of the following is a p block element?
a)
Ca
b)
Ar
c)
Re
d)
Au
42.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
43.
What is the electron configuration of sodium?
a)
2.8
b)
2.8.2
c)
2.8.1
d)
11
44.
What is the electron configuration of calcium?
a)
2.8.8.2
b)
2.8.10
c)
20
d)
2.18.2
45.
Which element has an electron configuration of 2.5?
a)
Oxygen
b)
Nitrogen
c)
Phosphorus
d)
Carbon
46.
Which element has an electron configuration of 2.8.8?
a)
Lead
b)
Flourine
c)
Neon
d)
Argon
47.
What is the electron configuration of Aluminium?
a)
2.8.3
b)
2.11
c)
13
d)
2.8.2
48.
What is the electron configuration of chlorine?
a)
17
b)
2.7
c)
2.8.7
d)
2.8.4
49.
Which element has the electron configuration of 2.8.2?
a)
Magnesium
b)
Sodium
c)
Sulfur
d)
Arsenic
50.
Which element has the electron configuration of 2.8.4?
a)
Neon
b)
Boron
c)
Gallium
d)
Silicon
51.
Which element has the electron configuration of 2.7?
a)
Krypton
b)
Iodine
c)
Flourine
d)
Barium
52.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
53.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
54.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
55.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
56.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
57.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
58.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
59.
What is incorrect about this orbital diagram?
a)
Both arrows in the 2p box should be pointing up
b)
There is nothing incorrect with this diagram
c)
In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
60.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
61.
Which is associated with more energy? 
a)
2p
b)
2s
c)
3p
d)
1s
62.
How many electrons can the d sublevel hold?
a)
14
b)
10
c)
2
d)
6
63.
How many electrons can the s sublevel hold?
a)
14
b)
10
c)
2
d)
6
64.
How many electrons can the p sublevel hold?
a)
14
b)
10
c)
2
d)
6
65.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
66.
If an atom has 12 protons, how many valence electrons will that atom have? 
a)
2
b)
10
c)
8
d)
6
67.
Which atom is it who has 3 energy levels and 4 valence electrons? 
a)
Carbon
b)
Lithium
c)
Silicon
d)
Aluminum
68.
Identify this atom: 
a)
Lithium
b)
Chlorine
c)
Phosphorus 
d)
Fluorine
69.
What is the number of valence electrons for Carbon?
a)
12
b)
6
c)
5
d)
4
70.
How many energy levels does Hafnium have?
a)
4
b)
72
c)
6
d)
cannot determine
71.
How can you tell how many valence electrons an atom has? 
a)
APE MAN
b)
By the Group 
c)
By the Period
d)
By the atomic number
72.
How can you tell how many energy levels an atom has? 
a)
APE MAN
b)
By the Group
c)
By the Period
d)
By the atomic mass
73.
How many valence electrons does Calcium have? How many energy levels does Calcium have?
a)
2 valence: 4 energy levels 
b)
20 valence:  4 energy levels 
c)
4 valence: 2 energy levels 
d)
2 valence: 3 energy levels 
74.
If an atom has 4 protons, how many valence electrons will it have?
a)
4
b)
6
c)
2
d)
0
75.
What is the rule to follow when arranging electrons for a BOHR model of an atom?
a)
2-2-8
b)
2-8-10
c)
2-4-6-8
d)
2-8-8
76.
Which group has the greatest number of valence electrons?
a)
1
b)
14
c)
18
d)
16
77.
How many valence electrons are found in atoms of group 14?
a)
4
b)
3
c)
14
d)
16
78.
How many valence electrons are found in atoms of aluminum?
a)
6
b)
3
c)
13
d)
16
79.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
80.

What is the electron configuration of Iodine?

a)

[Kr]5s24d105p6

b)

[Kr]5s24d106p6

c)

[Kr]5s25d106p6

d)

None of the above

81.

There are __ energy levels

a)

1

b)

2

c)

7

d)

8

82.
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
83.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
84.
What does Pauli exclusion principle state ?
a)
states that each electron occupies the lowest energy orbital available
b)
states that a maximum of two electrons can occupy a single atomic orbital, but if only if the electros have opposite spins
c)
states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals
85.
What does Hund's rule states ?
a)
states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals
b)
states that each electron occupies the lowest energy orbital available
c)
states that a maximum of two electrons can occupy a single atomic orbital, but if only if the electros have opposite spins
86.
What does an atom's electron-dot structure consist of ? 
a)
the elements atomic number and mass number which represents the number of protons and neutrons
b)
the element's symbol, which represents the atomic nuclues and inner-level electrons,surrounded by dots representing all of the atom's valence electrons
87.

The third energy level can hold at most how many electrons?

a)

2

b)

8

c)

18

d)

32

88.

Which area on the periodic table represents the electrons in the "d" sublevel?

a)

representative elements

b)

columns 3-8

c)

rare earth elements

d)

transition elements

89.

Each row on the periodic table represents:

a)

an energy level

b)

a sublevel

c)

an electron

d)

an orbital

90.

How many valence electrons does phosphorus have and in which sublevel(s) are they found?

a)

3; p

b)

5; s and p

c)

2; s

d)

3; s and p

91.

Which of the following is the electron configuration for an alkali earth metal?

a)

1s22s1

b)

1s22s22p1

c)

1s22s22p5

d)

1s22s22p63s2

92.

How many electrons at most are in the 4f sublevel?

a)

10

b)

8

c)

18

d)

14

Similar Resources on Wayground

Chem for Life 1st Semester Review

88 questions

Chem for Life 1st Semester Review

quiz

Worksheet

•

10th Grade

Unit 5 Review (ACP)

96 questions

Unit 5 Review (ACP)

quiz

Worksheet

•

11th Grade

Periodic Table and Trends Review

88 questions

Periodic Table and Trends Review

quiz

Worksheet

•

10th Grade - University

Chemical Names and Formulas: Ionic Compounds (with transition metals and polyatomic ions)

90 questions

Chemical Names and Formulas: Ionic Compounds (with transition metals and polyatomic ions)

quiz

Worksheet

•

10th - 11th Grade

Honors Chemistry Pre-Test

88 questions

Honors Chemistry Pre-Test

quiz

Worksheet

•

9th - 12th Grade

ôn tập giữa học kì 1 hóa 11

93 questions

ôn tập giữa học kì 1 hóa 11

quiz

Worksheet

•

11th Grade

Chemistry Semester 2 Final Exam Review

90 questions

Chemistry Semester 2 Final Exam Review

quiz

Worksheet

•

10th - 12th Grade

1/25- AKS 1abc CW

87 questions

1/25- AKS 1abc CW

quiz

Worksheet

•

8th - 12th Grade