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Worksheets

Chemical Bonding

Total questions: 149

Worksheet time: 2hrs 39mins

Name
Class
Date
1.

Construct the electron shell diagram for an atom of potassium (19K). Then identify the number of valence electrons in the potassium atom. Then complete the following sentence:

For potassium to become an ion, it will _____________ (gain /lose) ________ (a number) electrons and become a/an___________ (cation/anion)

(a)  

2.

Which of the following is most directly involved in chemical bonding?

a)

valence electrons

b)

neutrons

c)

alpha particles

d)

protons

3.

___Fe + ___O2 ---> ___Fe2O3


Which set of coefficients will correctly balance the equation?

a)

Already Balanced (no coefficients needed)

b)

2, 3, 4

c)

4, 3, 2

d)

3, 2, 2

4.

MgCl2 + Na ---> NaCl + Mg


What type of reaction is shown by the equation?

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

5.

Why do bonds form?

a)

To fill the valence shell of electrons for the elements involved

b)

to release energy stored in the bonds

c)

because whenever you mix two chemicals, there will be a reaction

d)

because of attraction

6.

The type of covalent bond present in a nitrogen molecule is a

a)

Double bond

b)

Triple bond

c)

Single bond

d)

Dative bond

7.

Which of the following is the correct name for the compound PbO?

a)

lead oxide

b)

lead monoxide

c)

lead (I) oxide

d)

lead (II) oxide

8.

When Alkali metals (Group 1) form ions, they ____.

a)

lose 1 proton

b)

gain 1 proton

c)

lose 1 electron

d)

gain 1 electron

9.

What is the correct IUPAC name for the compound P2O5?

*IUPAC stands for International Union of Pure and Applied Chemistry and it is the naming system that we use in class.

a)

phosphorus pentoxide

b)

diphosphorus pentoxide

c)

phosphorus oxide

d)

potassium oxide

10.

Which of the following elements is most likely to form an incomplete octet?

a)

Carbon

b)

Oxygen

c)

Boron

d)

Fluorine

11.

To determine if two atoms will bond, what would be helpful to know?

a)

Valence electrons, found by group number

b)

Whether the elements are metals or nonmetals

c)

The electronegativity of the atoms

d)

All of the above, all of which can be found on the Periodic Table

12.

How does fluorine (F) obey the octet rule when reacting to form compounds?

a)

It doesn’t change its number of electrons

b)

Fluorine does not obey the octet rule.

c)

It gains electrons.

d)

It gives up electrons.

13.

Which is the correct Lewis structure/ dot structure of oxygen?

a)
b)
c)
d)
14.

Consider the four pairs of elements below. Which pairs form an ionic bond and covalent bond?

a) Na and Br _____________

b) Mg and S _____________

c) Ca and Al ______________

d) N and O______________

4 lines
15.

Which correctly describes the molecular polarity of water?

a)

nonpolar and symmetrical

b)

nonpolar and asymmetrical

c)

polar and symmetrical

d)

polar and asymmetrical

16.

the diagram below represents particles of different elements in a crystal. What type of bond holds these particles together?

a)

covalent

b)

ionic

c)

hydrogen

d)

polar

17.
What type of bond is illustrated above?
a)
Metallic
b)
Ionic
c)
Covalent
d)
Wiggly
18.

Which of the following elements has the capability to form expanded octet?

a)

Hydrogen

b)

Carbon

c)

Sulfur

d)

Oxygen

19.

What type of chemical bonding would take place between sodium and chlorine

a)

Ionic Bond

b)

Polar Covalent Bond

c)

Non-Polar Covalent Bond

d)

Metallic Bond

20.

Among the following the one which is composed, of all the three kinds of bond (ionic, covalent and coordinate bond) is:

a)

Sodium chloride

b)

Ammonia

c)

Carbon tetrachloride

d)

Ammonium chloride

21.

Based on formal charges, which of the following is the most desirable form of

 CH2OCH_2O  

a)
b)
22.

Atoms like oxygen and chlorine ________ the electrons to form stable molecules such as O2 and Cl2

a)

Donates

b)

Accepts

c)

Shares

d)

Exchanges

23.

In the chemical formula Fe2O3, the number two means two atoms of

a)

iron (Fe)

b)

Oxygen (O)

24.

Select the correct formula for boron trichloride.

a)

B2Cl

b)

B3Cl

c)

BCl3

d)

BCl2

25.

Which type of bond involves the equal sharing of electrons?

a)

ionic

b)

polar covalent

c)

nonpolar covalent

d)

metallic

26.

which of the following is a nonpolar molecule with polar covalent bonds?

a)

HCl

b)

Cl2

c)

CCl4

d)

KCl

27.

Which sub-atomic particle is involved in chemical bonding?

a)

Proton

b)

Neutron

c)

Electron

d)

Valence Electron

28.

Which of the following forms a nonpolar covalent bond?

a)

Br2

b)

HBr

c)

NaBr

d)

PBr3

29.

Which type of bond involves a transfer of electrons?

a)

ionic

b)

polar covalent

c)

nonpolar covalent

d)

metallic

30.
Given the picture, what type of bond is  holding the atoms together in this molecule?
a)
polar covalent bond
b)
nonpolar covalent bond
c)
ionic bond
d)
metallic bond
31.

Which of the following is a common characteristic of a covalent compound?

a)

High melting point

b)

Consists of molecules

c)

Always soluble in water

d)

Conducts electricity in molten state

32.

The number of _____ is most important in determining how an atoms will bond.

a)

Neutrons

b)

Protons

c)

Valence electrons

d)

Electrons in the innermost shells

33.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
34.

What is the balanced chemical formula of iron (II) oxide?

a)

FeO

b)

FeO2

c)

Fe2O2

d)

Fe2O

35.

Which of the following elements does NOT form an ion with a charge of 2+?

a)

Beryllium

b)

Strontium

c)

Magnesium

d)

fluorine

36.

Which of the following compounds is able to conduct electricity when it is dissolved in solution but not as a solid?

a)

C6H12O6

b)

H2O

c)

PCl3

d)

CaCl2

37.

Which statement correctly describes the behavior of the valence electron in the ionic bond?

a)

an electron from the metal moves to the nonmetal

b)

an electron from the nonmetal moves to the metal

c)

an electron is shared between both atoms

38.

Which of the following is the most polar?

a)

HF

b)

HCl

c)

HBr

d)

HI

39.

What type of reaction is electrolysis if its formula is:


2H2O → 2H2 + O2

a)

Synthesis (Combination)

b)

Decomposition

c)

Single Replacement

d)

Combustion

40.

When the orbitals of two nonmetals overlap and electrons get shared, what kind of bond is formed?

a)

ionic

b)

covalent

c)

hydrogen

d)

metallic

41.

What is the chemical formula of sodium nitride?

a)

NaN

b)

Na2N

c)

Na3N

d)

NaN3

42.

What elements generally make an ionic bond?

a)

metal and non metal

b)

metal and metal

c)

non metal and non metal

43.
Using electronegativities, what type of bond is formed by S and Br.
a)
ionic
b)
polar covalent
c)
non-polar covalent
44.

Which type of bond involves highly mobile electrons?

a)

ionic

b)

polar covalent

c)

nonpolar covalent

d)

metallic

45.

Which of the following is a non-polar molecule?

a)

HClHCl

b)

NH3NH_3

c)

CCl4CCl_4

d)

H2OH_2O

46.

Which of the following is a polar molecule?

a)

O2

b)

CO2

c)

NH3

d)

CH4

47.

How many single bonds will carbon look to make when it bonds covalently?

a)

2

b)

3

c)

4

d)

5

48.

Which of the following is the correct chemical formula of calcium nitrate?

a)

CaNO3

b)

Ca(NO3)2

c)

CaN

d)

Ca3N2

49.

How many pairs of electrons are shared between the nitrogen atoms in a molecule of nitrogen?

a)

2

b)

3

c)

4

d)

6

50.

Which type of bond involves an unequal sharing of electrons?

a)

ionic

b)

polar covalent

c)

nonpolar covalent

d)

metallic

51.
Elements on the LEFT side of the periodic table will most likely form:
a)
Positive ions
b)
Negative ions
c)
Neutral Ions
d)
None of these
52.

When a metal atom becomes an ion:

a)

It loses electrons and is oxidized

b)

It gains electrons and is reduced

c)

It gains electrons and is oxidized

d)

It loses electrons and is reduced

53.

Below are four models representing compounds. Which of these models BEST represents ammonia (NH3)?

a)
b)
c)
d)
54.

Which of the following is the most plausible structure of

 N2ON_2O  

a)

Structure 1

b)

Structure 2

c)

Structure 3

55.

metals and nonmetals generally form ionic bonds by transferring electrons from one atom to another, Which of the following sets of elements will form an ionic bond?

a)

Cl & F

b)

Na & F

c)

Na & K

d)

He & O

56.

Which of the following compounds contains both ionic and covalent bonds?

a)

NaCl

b)

PCl3

c)

NaClO4

d)

CaBr2

57.

How many different elements are in the following compound?

Na2CO3

a)

1

b)

3

c)

6

d)

7

58.

Which of the following pairs of elements is most likely to form an ionic compound?

a)

magnesium and fluorine

b)

manganese and iron

c)

oxygen and chlorine

d)

sodium and aluminum

59.

How many chlorine (Cl) atoms are in 3MgCl2?

a)

2

b)

3

c)

5

d)

6

60.

Which of the following has the longest bond length

a)

Single Bond

b)

Double Bond

c)

Triple Bond

d)

Ionic Bond

61.

Chemical bonds are formed when atoms,

a)

combine nuclei

b)

give up neutrons

c)

gain protons

d)

share or transfer electrons

62.

What is the correct formula for the covalent compound dinitrogen pentoxide?

a)

N2O5

b)

N4O

c)

NO2

d)

NO4

63.

______ molecules are found in nature as pairs of two atoms of the same type covalently bonded together.

a)

Diatomic

b)

Monoatomic

c)

Polyatomic

d)

Elemental

64.

Ionic and covalent compounds are alike because they both...

a)

share electrons

b)

lose outer electrons

c)

fill outer electron levels

65.

AlCl3 + Na(OH) → Al(OH)3 + NaCl


In the chemical equation above, NaCl is a ______.

a)

Catalyst

b)

Solvent

c)

Product

d)

Reactant

66.

Metals are good conductors of electricity because when the metal atoms bond the valence electrons are

a)

highly mobile

b)

transferred

c)

shared equally

d)

shared unequally

67.

What piece of evidence guarantees that a chemical change has occurred?

a)

A change in shape or size

b)

A change in the state of matter.

c)

A change in temperature.

d)

A new substance being created.

68.

When cations and anions join, what kind of bond are they forming?

a)

covalent

b)

molecular

c)

network

d)

ionic

69.

What is the formal charge of N in

 NO3−NO_3^-  

a)

0

b)

+1

c)

-1

d)

+2

70.

The property which is characteristic of an electrovalent compound is that

a)

It is easily vaporized

b)

It has a high melting point

c)

It is a weak electrolyte

d)

It often exist as a liquid

71.

The number of covalent, coordinate bond and lone pair in hydronium ion is:

a)

2,2,1

b)

1,1,1

c)

0,2,1

d)

2,1,1

72.

Predict the bond between Mg and Cl

a)

Covalent

b)

Ionic

c)

Metallic

d)

None of the above

73.

How many valence electrons are transferred from the sodium atom to fluoride in the formation of the compound sodium fluoride?

a)

0

b)

1

c)

2

d)

3

74.

When ionic bonds are formed electrons are

a)

shared between a metal and a nonmetal

b)

shared between metals

c)

transferred from nonmetals to metals

d)

transferred from metals to nonmetals

75.

Which of the following shows correctly an ion pair and the ionic compound the two ions form?

a)

Sn4+ and N3- form Sn4N3

b)

Cu2+ and O2- form Cu2O2

c)

Cr3+ and I- form CrI

d)

Cr2+ and I- form CrI2

76.

Which of the following is true about a balanced chemical equation?

a)

Starting substances are called reactants, and ending substances are called products.

b)

The reactants and products are separated by an arrow.

c)

The equation must obey the Law of Conservation of Matter.

d)

All of these are true.

77.
Using electronegativities, what type of bond is formed by Co and F.
a)
ionic
b)
polar covalent
c)
non-polar covalent
78.

A compound is made of two nonmetals. It is

a)

ionic

b)

metallic

c)

covalent

79.
What type of atoms make a covalent bond?
a)
only Nonmetals
b)
Metal and a Nonmetal
c)
only Metals
d)
only Noble Gases
80.
The bond between N & H.   Ionic or covalent?
a)
Ionic
b)
Covalent
81.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
82.

Which solid would be a good conductor?

a)

sodium chloride

b)

copper (II) sulfate

c)

glucose

d)

aluminum

83.
What usually forms a negative ion?
a)
Non-metals
b)
metals
84.
What type of compound is CaF2?
a)
covalent
b)
ionic
c)
polar
d)
metallic
85.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
86.

Which of the following types of elements can exist in monatomic form?

a)

alkali metals

b)

transition metals

c)

halogens

d)

noble gases

87.

Which compound is held together by electrostatic forces?

a)

NO2

b)

CaSO4

c)

Aluminum

d)

P4O10

88.
What does the prefix "di" mean
a)
1
b)
2
c)
3
d)
4
89.
The name of Cu₃N₂ is
a)
copper (III) nitride
b)
copper (II) nitride
c)
copper nitride
d)
tricopper dinitride
90.
The chemical bond formed when two atoms share electrons is called a(n)
a)
ionic bond.
b)
orbital bond.
c)
Lewis structure.
d)
covalent bond.
91.
Which of the following gives the correct chemical formula for the compound Magnesium Phosphide?
a)
Mg2P3
b)
MgP
c)
Mg3P2
d)
MgP2
92.
________ molecules are found in nature as single atom elements
a)
polyatomic
b)
monatomic
c)
elemental
d)
diatomic
93.
The bond between Na & F.   Ionic or covalent?
a)
Ionic
b)
Covalent
94.
Which of the following gives the correct chemical formula for the compound Calcium Nitride?
a)
Ca2N3
b)
CaN
c)
Ca3N2
d)
CaN2
95.

______ molecules are found in nature as pairs of two atoms of the same type covalently bonded together.

a)

Diatomic

b)

Monatomic

c)

Polyatomic

d)

Network

96.
Do covalent bonds share or transport electrons?
a)
Share
b)
Transport
97.
In chemical compounds, covalent bonds form when
a)
the electronegativity difference between two atoms is very large.
b)
electrons are completely transferred between two metals.
c)
pairs of electrons are shared between two nonmetal atoms.
d)
two nonmetal atoms are attracted to each other by opposite charges.
98.
Is the following compound ionic or covalent:
AlCl3
a)
ionic 
b)
covalent
99.
What is the correct chemical name for the ionic compound: CuS
a)
copper sulfide
b)
copper (I) sulfide
c)
copper (II) sulfide
d)
copper monosulfide
100.

Ionic compounds are held together by

a)

intermolecular forces

b)

electrostatic forces

c)

magnetic forces

d)

nuclear forces

101.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 nonmetals
c)
metal
d)
none of the above
102.
Which of the following gives the correct chemical formula for the compound Dinitrogen Monoxide?
a)
NO
b)
N2O
c)
N2O2
d)
O2N2
103.
A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?
a)
Ionic
b)
Metallic
c)
Covalent
d)
Crystalline
104.

A compound forms between a metal and a nonmetal. It is

a)

ionic

b)

metallic

c)

covalent

105.
What is the correct chemical name for the ionic compound: Fe3N2
a)
Iron nitride
b)
Iron (III) nitride
c)
Iron (II) nitride
d)
TriIron dinitride
106.
Which type of bond has an equal sharing of electrons?
a)
Polar Covalent 
b)
Non Polar Covalent
c)
Ionic
d)
Metallic
107.
The number of _____ is most important in determining how an atoms will bond. 
a)
Neutrons
b)
Protons
c)
Valence Electrons
d)
Electron sin the innermost shell
108.
What usually forms a positive ion?
a)
Non-metals
b)
metals
109.
If an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?
a)
O10-
b)
O8+
c)
O2-
d)
O10+
110.

Which compound would have a very low melting point?

a)

sodium chloride

b)

copper (II) sulfate

c)

sulfur dioxide

d)

aluminum

111.
An ionic compound made of copper (Cu2+) and oxygen would be named
a)
copper oxygen.
b)
copper oxide.
c)
dicopper oxide.
d)
copper(II) oxide.
112.
What type of bond forms when electrons are transferred from one atom to another?
a)
ionic bond
b)
atomic bond
c)
covalent bond
d)
metallic bond
113.
Why do bonds form?
a)
To fill the valence shell of electrons for the elements involved
b)
to release energy stored in the bonds
c)
because whenever you mix two chemicals, there will be a reaction
d)
because of attraction
114.
High Melting & Boiling Points
a)
Ionic
b)
Covalent
115.
When an atom loses an electron, it is called a..
a)
crystal
b)
formula
c)
ion
116.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
117.

Which compound would be a good conductor when in solution?

a)

aluminum

b)

sulfur dioxide

c)

ammonia

d)

sodium nitrate

118.
What happens when an atom loses an electron?
a)
It becomes Negatively Charged
b)
It remains neutral because the proton also leaves.
c)
It becomes Positively Charged
d)
It stays the same.
119.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 nonmetals
c)
metal
d)
none of the above
120.
A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely?
a)
ionic, because the valence electrons are shared between atoms
b)
covalent, because the valence electrons are mobile
c)
metallic, because the valence electrons are stationary
d)
metallic, because the valence electrons are mobile
121.
What is the formula for silicon dioxide?
a)
SO2
b)
NaO2
c)
SiO2
d)
SiO
122.
The chemical formula of potassium iodide is
a)
KI
b)
PI
c)
KI₂
d)
K₂I
123.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
124.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
125.
What is the formula for aluminum fluoride?
a)
AlF
b)
Al2F3
c)
AlF3
d)
Al3F2
126.
The name of Ni₂O₃ is
a)
nickel (II) oxide
b)
nickel (III) oxide
c)
nickle oxide
d)
dinickel trioxide
127.
Atoms are most stable when their outer shell is complete.
a)
true
b)
false
128.
What is the correct chemical name for the ionic compound:  Na2O
a)
Sodium oxide
b)
Sodium (II) oxide
c)
Disodium monoxide
d)
Disodium oxide
129.

A mixture of two or elements at least one of which is a metal is called

a)

an ion

b)

an alloy

c)

steel

d)

a crystal

130.

A compound that is a poor conductor and has low melting and boiling points is most likely

a)

ionic

b)

metallic

c)

covalent

131.
What is the correct chemical name for the molecular compound:  SF4
a)
Sulfur Fluoride
b)
Sulfur TetraFluoride
c)
TetraSulfide Fluoride
d)
Sulfur (IV) Fluoride
132.
The chemical formula of iron (III)bromide is
a)
FeBr
b)
Fe(III)Br
c)
FeBr₃
d)
Fe₂Br₃
133.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
134.

Which of the following can exist in monatomic form?

a)

Oxygen

b)

Copepr

c)

Sodium

d)

Argon

135.
The name of FeCl₂ is
a)
iron chloride
b)
iron (II) chloride
c)
iron (I) chloride
d)
iron dichloride
136.
An ionic bond forms when atoms ___________ electrons.
a)
gain
b)
share
c)
increase
d)
transfer
137.
What is the name of the compound NO?
a)
nitrogen dioxide
b)
nitrogen monoxide
c)
dinitrogen trioxide
138.

Bonds formed by sharing electrons between atoms are

a)

ionic

b)

metallic

c)

covalent

d)

dipole-dipole

139.
When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..
a)
atomic number
b)
mass number
c)
charge
d)
ionization energy
140.
There are 4 different types of subshells s,p,d,f
a)
true
b)
false
141.

Bonds formed by transferring electrons from one atom to another are

a)

ionic

b)

metallic

c)

non polar covalent

d)

covalent

142.
Predict the bond that will form between Se and Cl
a)
Ionic
b)
Covalent
143.
Relatively soft
a)
Ionic
b)
Covalent
144.
What is the correct chemical name for the molecular compound:  CS2
a)
Carbon Sulfide
b)
Carbon diSulfide
c)
diCarbide diSulfide
d)
Carbon (II) Sulfide
145.
What does the prefix tetra mean?
a)
1
b)
2
c)
3
d)
4
146.
Covalent bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
147.

Which of the following types of elements can exist in nature as diatomic molecules?

a)

alkali metals

b)

transition metals

c)

halogens

d)

noble gases.

148.
Do ionic bonds share or transport electrons?
a)
Share
b)
Transport
149.
Soluble in Water
a)
Ionic
b)
Covalent

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