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Chemistry -Chemical bonding

Total questions: 153

Worksheet time: 2hrs 57mins

Name
Class
Date
1.

A charged particle that has gained or lost electrons is called a _______.

a)

isos

b)

ionic

c)

isotope

d)

ion

2.

In the chemical formula for an ionic compound, which item is written first?

a)

positive ion

b)

proton

c)

anion

d)

negative ion

3.

Which statement is false

a)

an Anion is negatively charged

b)

Ionic bonds happen because of electrostatic force

c)

an Ion is positively charged

d)

opposite charges don't repel

4.

Why do Ionic Bonds form?

a)

to stabilize the atom with a full outer shell

b)

so atoms will stick together to form molecules

c)

so the number of protons equals the number of electrons

d)

so an atoms becomes unstable

5.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
6.
How are ionic bonds formed?
a)
Transfer of electrons
b)
Sharing of electrons
7.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
8.
Which of these is not a real bond in chemistry?
a)
James
b)
Ionic
c)
Covalent
9.
An electron has what kind of charge?
a)
no charge
b)
positive 
c)
negative
d)
it depends
10.
Atoms that gain electrons become...
a)
negatively charged
b)
positively charged
c)
remain neutrally charged
d)
21
11.

Why do all bonds form?

a)

so the number of protons equals the number of electrons

b)

so an atom can become unstable

c)

to fill the outermost energy level

12.

Write the correct formula for Sodium Chloride.

a)

SC

b)

SCl

c)

NaCl

d)

NaCl2

13.

How many Aluminum atoms are in Al2O3?

a)

3

b)

5

c)

2

d)

1

14.
When the number of electrons equals the number of protons the atom has what charge?
a)
sponge bob
b)
positive charge
c)
negative charge
d)
neutral charge
15.

Ionic bonds are formed from a combination of metal elements and __________________ elements.

a)

non-metal

b)

receive

c)

metal

d)

donate

16.

In the formation of ionic bonds, the electrons will be ____________ from metal elements to non-metal elements.

a)

oppositely

b)

receive

c)

transferred

d)

donate

17.

Which of the below is an ionic compounds?

a)

Ni

b)

MgCl2

c)

H2O

d)

CH4

18.

An example of an ionic compound is Sodium Chloride, which is made from Na+ and Cl- ions. Why do these ions form an ionic bond?

a)

They have like charges

b)

They are from the same group

c)

They are from the same period

d)

They have opposite charges

19.

Lithium is in group 1 of the periodic table, which ion would it form?

a)

Li-

b)

Li2-

c)

Li+

d)

Li2+

20.

Oxygen is in group 6 of the periodic table, which ion would it form?

a)

O-

b)

O+

c)

O2-

d)

O2+

21.

Lead Chloride is an ionic compound, made up from Pb2+ ions and Cl- ions. Which is the correct formula for this compound?

a)

PbCl3

b)

PbCl

c)

PbCl4

d)

PbCl2

22.

Magnesium Hydroxide is an ionic compound made up from Mg2+ and OH- ions. Which is its correct formula?

a)

MgOH

b)

MgOH2

c)

Mg(OH)2

d)

MgO

23.

negatively charged ions are called what?

a)

anion

b)

cation

c)

ionic bond

d)

dogion

24.

A positively charged ion is called what?

a)

anion

b)

onion

c)

cation

d)

dogion

25.
An ionic bond results due to the __________ attraction between 2 oppositely charged ions.
a)
delocalized
b)
weird
c)
electrostatic
d)
ionization
26.
An atom that has gained or lost electrons is called ...
a)
a winner
b)
an isotope
c)
an ion
d)
a loser
27.

if METALS are more likely to LOSE electrons, they will form ...

a)

anions

b)

neutral atoms

c)

cations

28.

If an aluminum atom has 13 protons (+) and 10 electrons (-), what is it's charge?

a)

Al+3

b)

Al+13

c)

Al+10

d)

Al-10

29.

ionic bonds form between

a)

a metal and nonmetal

b)

two nonmetals

c)

two metals

30.

What is the total charge of an ionic compound?

a)

positive

b)

negative

c)

neutral

31.
Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?
a)
There are 2 bromide ions for every magnesium ion
b)
Bromide has a 2- charge
c)
Bromide has a 2+ charge
d)
There are 2 magnesium ions to every bromide ion
32.
Elements in Group 1 lose one electron to form ions with a _________________ charge.
a)
1+
b)
2+
c)
0
d)
1-
33.

Calcium Chloride is an ionic compound, made up from Ca2+ ions and Cl- ions. Which is the correct formula for this compound?

a)

CaCl3

b)

CaCl

c)

CaCl4

d)

CaCl2

34.

Why are sodium and chlorine attracted to each other?

a)

they have opposite charges

b)

they both have negative charges

c)

they both have positive charges

35.
Atoms that gain electrons become...
a)
negatively charged
b)
positively charged
c)
remain neutrally charged
d)
21
36.

Cations

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

37.

Anions

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

38.

Nitrogen, N, will form which of the following ions?

a)

N

b)

N-3

c)

N-5

d)

N+5

39.
How many electrons should Helium have around its Lewis dot model?
a)
1
b)
2
c)
7
d)
8
40.

How many dots would you put around carbon, a group 14 element?

a)

4

b)

6

c)

8

d)

18

41.

How many valence electrons does Aluminum Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

42.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
43.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
44.
How many electrons should Chlorine have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
45.

Which of the elements in the picture has correct electron dot notation?

a)

1

b)

2

c)

3

d)

4

46.
This could be the dot diagram of 
a)
Ne
b)
Si
c)
Al
d)
Be
47.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

48.

Which of the following is a correct electron dot structure?

a)
b)
c)
d)
49.

Which of the following is the correct electron dot structure for nitrogen?

a)
b)
c)
d)
50.

Which of elements below would have 3 electrons in its LES?

a)

Sodium

b)

Lithium

c)

Boron

d)

Carbon

51.

2-8-2: This is the electron configuration for the Bohr model of...

a)

Sn

b)

Mg

c)

Mn

d)

Al

52.
According to the diagram below, how many bonds will this atom need to make to be stable?
a)
1
b)
2
c)
3
d)
4
53.
How many more valence electrons does Oxygen need to be stable?
a)
6
b)
2
c)
4
d)
It's already stable with 8
54.

Which of these is incorrect?

a)
b)
55.

Which is the correct lewis dot structure for Ne?

a)

A

b)

D

c)

F

d)

H

56.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
57.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
58.

How many total valence electrons are participating in bonding in the molecule above?

a)

8

b)

4

c)

2

d)

3

59.

CO2 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

e)

4

60.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

61.

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

62.

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

63.

How many valence electrons does Potassium Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

64.
How many electrons should Helium have around its Lewis dot model?
a)
1
b)
2
c)
7
d)
8
65.
How many electrons should Calcium have around its Lewis dot model?
a)
1
b)
2
c)
7
d)
8
66.
an element will always have the same number of 
a)
neutrons
b)
protons
c)
isotopes
d)
atoms
67.
How are electrons arranged in an atom?
a)
In groups of five
b)
In energy levels
c)
By color
d)
By shape
68.
How many electrons are in the outer (valence) shell of Chlorine (Cl)?
a)
1
b)
3
c)
6
d)
7
69.
An element with five valence electrons is
a)
phosphorus
b)
oxygen
c)
beryllium
d)
rubidium
70.

Which of the following is the correct electron-dot diagram for an atom with an electron configuration of 2-8-18-5?

a)
b)
c)
d)
71.
If my charge becomes 2+ what does that say about me?
a)
I am stealing 2 electrons
b)
I am losing 2 electrons
c)
I am in period 2
d)
I have an atomic # of 2
72.
If I gain electrons I become
a)
Positive because I've added to my atom
b)
negative because I've added electrons
c)
same because i'm balanced
d)
equal because now I have electrons
73.
How do the following two elements bond together?
Na1+  F1-         
a)
NaF
b)
NaF3
c)
Na3F
d)
Na1F2
74.
How do the following two elements bond together?
Cr3+  O2-         
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
75.
How do the following two elements bond together?
K1+  S2- 
a)
KS
b)
K8S
c)
K6S3
d)
K2S
76.
How do the following two elements bond together?
Al3+  O2-         
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
77.
Nonmetals form ____ by ____ electrons.
a)
Cations, gaining
b)
Cations, losing
c)
Anions, gaining
d)
Anions, losing
78.
Which of the following BEST describes ionic bonds?
a)
Bond held together by a sea of electrons
b)
Bond of two ions of opposite charges held together by electrostatic forces
c)
Bond held together by the sharing of electrons
d)
Bond between hydrogen and an anion or polyatomic ion.
79.
The proper formula for magnesium hydroxide:
a)
MgOH
b)
Mg2OH
c)
Mg(OH)2
d)
Mg2OH2
80.
What is the formula for aluminum fluoride?
a)
AlF
b)
Al2F3
c)
AlF3
d)
Al3F2
81.
A chemical bond resulting from the electrostatic attraction between positive and negative ions is called a(n)
a)
covalent bond.
b)
ionic bond.
c)
charged bond.
d)
dipole bond.
82.

Name the type of bonding in which the electrons are shared.

a)

Ionic bonding

b)

Covalent bonding

c)

Metallic bonding

83.

The covalent bond forms between

a)

a metal and nonmetal

b)

a nonmetal and nonmetal

c)

a metal and metal

84.

The number of electron pairs shared in double bond.

a)

One

b)

Two

c)

Three

85.

The energy required to break the bonds between two covalently bonded atoms

a)

bond dissociation energy

b)

activation energy

c)

none of these

86.

The number of pairs of electrons shared in triple covalent bond

a)

Two

b)

Three

c)

One

87.
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.
88.
Which of the following is NOT formed by a covalent bond?
a)
K2S
b)
H2O
c)
I2
d)
CO2
89.

How is covalent bonding represented?

a)

by writing its valence electrons

b)

by writing its Lewis structure

c)

by writing its number of bonds

d)

by writing its number of protons

90.

What kind of element forms covalent bond?

a)

metals

b)

semi -metals

c)

non metals

d)

metal and non metal

91.
 A lone pair is defined as
a)
A pair of bonding electrons
b)
One non-bonding electron
c)
A pair of non-bonding electrons
d)
A pair of electrons on the central atom
92.
What molecule could this be? 
a)
BF3
b)
CH4
c)
H2O
d)
CO2
93.
What molecule could this be? 
a)
H2O
b)
CCl4
c)
PCl5
d)
NaCl
94.
Who could this molecule be?
a)
CH4
b)
CO2
c)
PCl5
d)
BF3
95.
Who could this be? 
a)
CO2
b)
NH3
c)
H2S
d)
CH4
96.
Who could this be?
a)
H2O
b)
NH3
c)
CO2
d)
CH4
97.
How many lone pairs are in this molecule's structure?
a)
6
b)
2
c)
0
d)
4
98.
Phosphorous trichloride
a)
PCl3
b)
P3Cl
c)
P3Cl3
d)
PCL
99.
In an electron dot diagram, two pairs of shared electrons represents a ...
a)
single bond
b)
double bond
c)
triple bond
d)
quadruple bond
100.
A Nitrogen molecule (N2) has one triple bond. How many electrons do the nitrogen atoms share?
a)
1
1
b)
3
c)
4
d)
6
101.
Compared to ionic compounds, molecular compounds generally have...
a)
good conductivity
b)
greater densities
c)
more chemical bonds
d)
a low boiling point
102.
Compared to ionic compounds, molecular compounds generally have...
a)
stronger chemical bonds
b)
poor conductivity
c)
a high melting point
d)
lower densities
103.
In an electron dot diagram, two pairs of shared electrons represents a ...
a)
single bond
b)
double bond
c)
triple bond
d)
quadruple bond
104.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
105.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
106.
Elements combine to form __________.
a)
compounds
b)
atoms
c)
positive ions
d)
negative ions
107.
What part of an atom is involved in chemical bonding?
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
108.
A ________ is a model of an atom in which each dot represents a valence electron.
a)
Valence electron
b)
Electron dot diagram/Lewis dot structure
c)
Lewis bond structure
109.
Compounds made from only nonmetals are _________________ compounds.
a)
ionic
b)
covalent
c)
metallic
d)
chemical
110.
A covalent bond involves a __________ of electrons.
a)
sharing
b)
borrowing
c)
exchanging
d)
switching
111.
Low melting point and low solubility in water are general properties of ______________________ compounds
a)
ionic
b)
covalent
c)
chemical
d)
glucose
112.
The chemical formula shows one carbon atom bonded to __________ oxygen atoms.
a)
one
b)
two
c)
three
d)
four
113.
Name CCl4
a)
carbon carbon tetraiodide
b)
carbon tetrachloride
c)
monocarbon tetrachloride
d)
water
114.
Name BCl3
a)
boron chloride
b)
boron (III) chloride
c)
boron trichloride
d)
boron chlorine
115.
Give the formula for oxygen dichloride
a)
OCl2
b)

O2Cl2

c)
OCl
d)
O2Cl
116.
Give the formula for phosphorus trifluoride
a)
P3F
b)
PF
c)
PF3
d)
P3F3
117.
Give the formula for phosphorus trifluoride
a)
P3F
b)
PF
c)
PF3
d)
P3F3
118.
Name CO2
a)
carbon dioxide
b)
carbon monoxide
c)
carbon oxide
d)
monocarbon dioxide
119.
Name SO2
a)
monosulfur dioxide
b)
sulfur dioxide
c)
sulfur oxide
d)

sulfur (II) oxide

120.
Why do atoms share electrons?
a)
To attain the electron configuration of a noble gas.
b)
To become ions and take a charge
c)
to increase the mass
d)
it's a nice thing to do.
121.

Which of the following is NOT covalently bonded?

a)

K2S

b)

H2O

c)

I2

d)

CO2

122.

Diatomic elements are defined as IDENTICAL elements that bond with each other (i.e. Oxygen with Oxygen). What type of bond should they form?

a)

Ionic

b)

Covalent

123.
With the ________ you must have 8 electrons on the outside ring.
a)
anions
b)
ionic bonds
c)
cations
d)
octet rule
124.

Name the compound: NO

a)

Mononitrogen monoxide

b)

nitrogen oxide

c)

nitrogen monoxide

d)

mononitrogen oxide

125.

Which pair of atoms is most likely to form a covalent molecule?

a)

Hydrogen and lithium

b)

Phosphorus and sulfur

c)

Helium and neon

d)

Zinc and Boron

126.

Coordination covalent bonds can only be formed if

a)

Intermolecular traction occurs between hydrogen atoms bound to very electronegative atoms

b)

positive ions and negative ions whose electron configurations are the same as noble gases

c)

one atom has a free electron pair (PEB)

d)

there is an attractive force between the positive charge of the nucleus of a metal atom and the negative charge of a valence electron

127.

Ammonium ion (NH4+) is an example for

a)

Covalent compound

b)

Coordinate compound

c)

Ionic compound

d)

Metallic compound

128.

How can coordinate covalent bond form between ammonia, NH3 and hydrogen ion, H+ to form ammonium ion, NH4+?

a)

Ammonia, NH3 and hydrogen ion, H+ will each share one electron

b)

The pair of electrons not involved in covalent bond in ammonia, NH3 will be shared with hydrogen ion, H+

c)

Ammonia, NH3 and hydrogen ion, H+ will each share one electron

129.

How can coordinate covalent bond form in hydroxonium ion H3O+?

a)

The pair of electrons not involved in covalent bond in water molecule, H2O will be shared with hydrogen ion H+

b)

Water molecule, H2O and hydrogen ion, H+ will each share one electron

c)

Water molecule, H2O and hydrogen ion, H+ will each share two electrons

130.

Coordinates bonds are also called ..

a)

ionic bonds

b)

covalent bonds

c)

dative bonds

d)

metallic bonds

131.

What is the meaning of Dative Bond?

a)

a covalent bond between two atoms where one of the atoms provides both electrons that form the bond.

b)

a covalent bond between two atoms where both of the atoms provides both electrons that form the bond.

c)

same with an ionic bond

d)

not exist

132.

How can dative bond form in hydroxonium ion H3O+?

a)

The pair of electrons not involved in covalent bond in water molecule, H2O will be shared with hydrogen ion H+

b)

Water molecule, H2O and hydrogen ion, H+ will each share one electron

c)

Water molecule, H2O and hydrogen ion, H+ will each share two electrons

133.

How can dative bond form between ammonia, NH3 and hydrogen ion, H+ to form ammonium ion, NH4+?

a)

Ammonia, NH3 and hydrogen ion, H+ will each share one electron

b)

The pair of electrons not involved in covalent bond in ammonia, NH3 will be shared with hydrogen ion, H+

c)

Ammonia, NH3 and hydrogen ion, H+ will each share one electron

134.

Covalent bonds can be formed between

a)

alkali metal elements with halogens

b)

element of metal lakali soil with halogens

c)

alkali metal elements with noble gases

d)

oxygen element with an alkali metal

135.

Pairs of elements that can combine to become covalent compounds

a)

Oxygen and carbon

b)

Oxygen and calcium

c)

Chlorine and sodium

d)

Chlorine and magnesium

136.

The right statement to explain the formation of covalent bonds is

a)

Some electrons are given from one atom to another

b)

Some electrons are shared by bonding atoms

c)

Both atoms get electrons to form ions

d)

Neutrons are shared by the two binding atoms

137.

Diagram shows the formation of dative bond in

a)

Hydroxonium ion

b)

Ammonium ion

c)

Hydrogen ion

d)

Water molecule

138.

Oxygen in water molecules has .... lone pairs of electrons

a)

1

b)

2

c)

3

d)

4

139.

The chemical formulae of hydroxonium ion is ______

a)

H3O-

b)

H2O

c)

H3O

d)

H3O+

140.

The chemical formula of ammonium ion is ______

a)

NH3-

b)

NH4-

c)

NH3+

d)

NH4+

141.

Water, H2O, is classified as what type of molecule?

a)

a polar molecule

b)

a nonpolar molecule

c)

a coordinate covalent compound

d)

an ionic compound

142.

The various chemicals that make up butter are generally ___

a)

polar

b)

nonpolar

c)

soluble in water

d)

ionic compounds

143.

What is the measure of the tendency of an atom to attract bonding electrons called?

a)

ionization energy

b)

electron charisma

c)

dipole momentum

d)

electronegativity

144.
What type of bond is shown in this image?
a)
Ionic
b)
Polar Covalent
c)
Nonpolar Covalent
d)
Van der Waals Force
145.
Diatomic elements are defined as IDENTICAL elements that bond with each other (i.e. Oxygen with Oxygen).  What type of bond should they form?
a)
Ionic
b)
Polar Covalent
c)
Nonpolar Covalent
d)
Van der Waals force
146.

Use your knowledge and electronegativity sheet to predict what the following compound is classified as.

a)

polar covalent

b)

nonpolar covalent

c)

ionic

d)

metallic

147.

In a polar covalent bond, electrons are shared:

a)

equally

b)

unequally

c)

between two metals

d)

between a metal and a non-metal

148.

Liquids made up of polar molecules are really good at dissolving ___

a)

metallic solids

b)

lipids and fats

c)

molecular solids

d)

solids composed of polar or ionic compounds

149.

Water doesn't mix with oil because, rather than the water disliking the oil, it actually ___

a)

absorbs the oil

b)

is more dense that oil

c)

is attracted to itself much more than it is to oil

d)

chemically reacts with the oil

150.

A molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons is a _______________.

a)

nonpolar molecule

b)

polar molecule

c)

ionic compound

d)

metalic compound

151.

In this Lewis structure, the symbol above F means...

a)

electrons are being transferred to fluorine

b)

electrons are less attracted to F than H

c)

electrons are more attracted to F than H

d)

fluorine has formed a anion (negative ion)

152.

Classify the following molecule.

a)

polar

b)

nonpolar

c)

impossible to tell from the information provided

153.

Is the following molecule polar or nonpolar?

a)

polar - there are different elements bonded to the central atom

b)

nonpolar - the central atom has no lone pairs of electrons

c)

polar - the central atom has a lone pair of electrons

d)

nonpolar - the atoms bonded to the central atom are all the same

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