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Chemical Bonding

Total questions: 68

Worksheet time: 40mins

Name
Class
Date
1.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

2.

Which statement best describes the arrangement of elements in the periodic table?

a)

Elements are arranged in decreasing atomic mass from left to right.

b)

Elements are arranged in decreasing atomic number from left to right.

c)

Elements are arranged in increasing atomic number from left to right

d)

Elements are arranged in increasing number of neutrons from left to right.

3.

Atomic number represents which subatomic particle?

a)

electrons

b)

protons

c)

neutrons

4.

All of the elements in a period have the same number of _____.

a)

energy levels

b)

valence electrons

c)

protons

d)

electrons

5.

All of the elements in a group have the same number of _____.

a)

energy levels

b)

valence electrons

c)

protons

d)

electrons

6.

How many electrons can the first energy level hold?

a)

1

b)

2

c)

8

d)

Unlimited

7.

How many electrons can the second and third (for our intents and purposes) energy levels hold?

a)

1

b)

2

c)

8

d)

Unlimited

8.

Is this the correct Bohr model for silicon (Si)?

a)

Yes

b)

No

9.

Is this the correct Bohr model for carbon (C)?

a)

Yes

b)

No

10.
What are the 3 sub-atomic particles called?
a)
potions, neutrons and electrons
b)
protons, neurons and electrons
c)
protons, neutrons and elections
d)
protons, neutrons and electrons
11.
What is the mass number?
a)
Number of protons plus neutrons
b)
Number of protons plus electrons
c)
Number of neutrons plus electrons
12.

How many valence electrons does Hydrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

13.

How many valence electrons does Nitrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

14.

How many valence electrons does Silicon Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

15.

How many valence electrons does Oxygen Have?

a)

4 Valence electron

b)

5 Valence electron

c)

6 Valence electron

d)

7 Valence electron

e)

8 Valence electron

16.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
17.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
18.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
19.
This is the correct dot diagram for nitrogen (N)
a)
true
b)
false
20.
This is a correct dot diagram for nitrogen (N)
a)
true
b)
false
21.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
22.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
23.
Which particles change the charge in atoms when ions are formed?
a)
Protons
b)
Electrons
c)
Neutrons
d)
Kittens
24.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
25.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
26.
Valence electrons are: 
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
27.

Na ionizes to a charge of _______

a)

+1

b)

+2

c)

-1

d)

-2

28.

Li ionizes to a charge of _________

a)

+2

b)

+1

c)

-1

d)

-2

29.

K ionizes to a charge of _________.

a)

+1

b)

+2

c)

-1

d)

-2

30.

Be ionizes to a charge of ________.

a)

+1

b)

+2

c)

-1

d)

-2

31.

Mg ionizes to a charge of ______.

a)

+1

b)

+2

c)

-1

d)

-2

32.

Ca ionizes to a charge of _______.

a)

+1

b)

+2

c)

-1

d)

-2

33.

Al ionizes to a charge of _______.

a)

+3

b)

-3

c)

+2

d)

-2

34.

N ionizes to a charge of _______.

a)

+3

b)

-3

c)

+2

d)

-2

35.

P ionizes to a charge of _______.

a)

+3

b)

-3

c)

+2

d)

-2

36.

O ionizes to a charge of ________.

a)

+1

b)

+2

c)

-1

d)

-2

37.

S ionizes to a charge of _______.

a)

-2

b)

-1

c)

+1

d)

+2

38.

F ionizes to a charge of ________.

a)

-2

b)

-1

c)

+1

d)

+2

39.

Cl ionizes to a charge of _________.

a)

-2

b)

-1

c)

+1

d)

+2

40.

Br ionizes to a charge of ________

a)

-1

b)

-2

c)

+1

d)

+2

41.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
42.
Which particles change the charge in atoms when ions are formed?
a)
Protons
b)
Electrons
c)
Neutrons
d)
Kittens
43.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
44.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
45.
Valence electrons are: 
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
46.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

47.

What is the atomic number of Barium, Ba? (enlarge the periodic table)

a)

20

b)

38

c)

56

d)

88

48.

How many protons are in a sodium atom, Na? (tap to enlarge the periodic table)

a)

Sodium has 1 proton.

b)

Sodium has 3 protons.

c)

Sodium has 11 protons

49.

Atoms of the same element which have a different number of neutrons are called _________________.

a)

ions

b)

isotopes

c)

quarks

d)

molecules

50.

How many neutrons does C-14 contain? (tap to enlarge the image)

a)

6

b)

7

c)

14

d)

8

51.

ALL atoms of the same element have:

a)

same number of proton

b)

same number of nucleon

c)

different number of neutron

d)

different number of electron

52.
Which subatomic particles contribute the most to the mass of an atom?
a)
Protons, Neutrons, Electrons
b)
Protons only
c)
Protons and Electrons
d)
Protons and Neutrons
53.
The number of protons is equal to 
a)
the atomic number
b)
the number of neutrons
c)
the energy levels
d)
the periodic table groups
54.

If an atom has 12 neutrons and 11 protons, what is its atomic mass?

(a)  

55.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
56.

What is the charge on a lithium atom that loses 1 electron?

a)

+1

b)

0

c)

-1

d)

-2

57.
a)
2
b)
8
c)
3
d)
13
58.
a)
12
b)
7
c)
8
d)
14
59.
How do covalent bonds form?
a)
Donating & receiving valence e- between atoms.
b)
Opposite slight charges attract each other between compounds.
c)
Scientists are still not sure how they form.
d)
Sharing valence e- between atoms.
60.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
61.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
62.
Atoms are most stable when their outer shell is complete.
a)
true
b)
false
63.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
64.
Ionic or covalent?
NaBr
a)
Ionic
b)
Covalent
65.
Ionic or covalent?
H2O
a)
Ionic
b)
Covalent
66.

The metal atoms tend to _____________ electrons.

a)

lose

b)

gain

67.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
68.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red

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