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Worksheets**10.7.7 Chemical bonding, equations, balancing quiz review
Total questions: 61
Worksheet time: 3585secs
Name
Class
Date
1.
Are the atoms more stable when they are bonded together or when they are apart?
a)
Bonded Together
b)
Apart
2.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
3.
What do atoms that form positive ions tend to do?
a)
Tend to lose electrons
b)
Tend to lose protons
c)
Tend to gain electrons
d)
Tend to gain protons
4.
What usually forms the positive ion?
a)
Metal
b)
Non Metals
c)
None
5.
What happens when the sodium atom loses an electron?
a)
It become negatively charged
b)
It become positively charged
c)
none
6.
What usually forms the negative ion?
a)
nonmetals
b)
metal
c)
none
7.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
8.
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
9.
What happens when an atom loses an electron?
a)
Neutral (no charge)
b)
Positive charge
c)
Negative charge
10.
What happens when an atom gain an electron?
a)
Neutral(no charge)
b)
Positive charge
c)
Negative charge
11.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
12.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
13.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
14.
Predict the bond that will form between Se and Cl.
a)
Ionic
b)
Covalent
15.
Predict the bond that will form between Sr and S.
a)
Ionic
b)
Covalent
16.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom.
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
17.
What is the number of valence electrons for Oxygen?
a)
8
b)
6
c)
2
d)
1
18.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
19.
If the ending -ide is added to the name of an ion, what do we know about the ion?
a)
The ion has a positive charge.
b)
The ion has a negative charge.
c)
The ion has a neutral charge.
d)
The atom lost electrons.
20.
Which of the following gives the correct chemical formula for the compound created by Nitrogen and Potassium?
a)
K3N
b)
KN
c)
N3K
d)
KN3
21.
Which of the following gives the correct chemical formula for the compound created by the combination of Magnesium and Phosphorus?
a)
Mg2P3
b)
MgP
c)
Mg3P2
d)
MgP2
22.
Which of the following gives the correct chemical formula for the compound created by the combination of Nitrogen and Calcium?
a)
Ca2N3
b)
CaN
c)
Ca3N2
d)
CaN2
23.
What is the correct formula for the compound formed by sodium and oxygen?
a)
NaO
b)
Na2O
c)
NaO2
d)
Na2O2
24.
What type of compound is CaF2?
a)
covalent
b)
ionic
c)
polar
d)
metallic
25.
Multiple bonding occurs with all of the following atoms except
a)
C
b)
F
c)
N
d)
O
26.
A compound that is a poor conductor and has low melting and boiling points is most likely
a)
ionic
b)
metallic
c)
covalent
27.
What is the charge of a sulfide (sulfur) ion?
a)
2+
b)
2-
c)
1+
d)
1-
28.
What molecule is this?
a)
CO
b)
CO2
c)
C2O
d)
C2O2
29.
How many electrons are shared in a triple bond?
a)
6
b)
3
c)
6 pairs
d)
5
30.
How many are shared in a double bond?
a)
2
b)
4 pairs
c)
6
d)
4
31.
How many are shared in a single bond?
a)
2 pairs
b)
4
c)
2
d)
1
32.
Ionic or covalent?
N H
N H
a)
Ionic
b)
Covalent
33.
This type of model shows only the valence electrons of an element?
a)
Bohr diagram
b)
Childers model
c)
Lewis-dot diagram
d)
What is a valence electron again?
34.
The correct Lewis-dot structure for Iodine ( I ) would have how many valence electrons?
a)
2
b)
4
c)
7
d)
8
35.
What group of elements satisfies the octet rule without forming compounds?
a)
halogen
b)
noble gas
c)
alkali metal
d)
alkaline-earth metal
36.
Which of the following has a Lewis Dot with 2 dots?
a)
Hydrogen
b)
Magnesium
c)
Boron
d)
Carbon
37.
Which of the following has a Lewis Dot with 3 dots?
a)
Hydrogen
b)
Magnesium
c)
Boron
d)
Carbon
38.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
39.
A molecule with a single covalent bond is....
a)
HCl
b)
SO
c)
CO
d)
SO2
40.
Which covalent structure is CO2?
a)
b)
c)
d)
e)
None of these
41.
What molecule could be?
a)
CH4
b)
CO2
c)
PCl5
d)
BF3
42.
Is this a correct Lewis structure for HCN?
a)
yes
b)
no
43.
How many electrons are shared in one of these N-Cl bonds?
a)
1
b)
2
c)
3
d)
4
44.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
45.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
46.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
47.
Balance this equation
_N2 + _H2 --> _NH3
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
48.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction.
49.
What is the little number after an element in a chemical equation called.
Example: H2
Example: H2
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
50.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
51.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
52.
Which side of a chemical equation is the product side?
a)
Left (before the arrow)
b)
Right (after the arrow)
53.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
54.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
55.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
56.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
57.
What does malleable mean?
a)
able to be shaped
b)
will break easily
c)
can be used for wire
d)
is shiny
58.
What is the ability of a substance to be pulled into a thin strand?
a)
Malleability
b)
Ductility
c)
Conductivity
d)
Solubility
59.
Metallic bonding is...
a)
a type of covalent bond.
b)
a type of ionic bond.
c)
an attraction between positive ions and freely moving electrons.
60.
Why do metallic compounds conduct electricity as solids?
a)
core electrons are mobile, allowing electricity to flow through the metal
b)
valence electrons are mobile, allowing electricity to flow through the metal
c)
protons are mobile, allowing electricity to flow through the metal
d)
the metal cations are mobile, allowing electricity to flow through the metal
61.
Metallic bonding is...
a)
a type of covalent bond.
b)
a type of ionic bond.
c)
an attraction between positive ions and a "sea" of delocalised electrons.
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