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WorksheetsChemistry Bonding and Balancing
Total questions: 49
Worksheet time: 2hrs 45mins
Name
Class
Date
1.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
2.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
3.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
4.
What is the Law of Conservation of Mass?
a)
It states that no matter can be created or destroyed.
b)
It states that no energy can be created or destroyed.
c)
It states that matter can be created or destroyed.
d)
It states that no sound can be created or destroyed.
5.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
6.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
7.
What goes in the missing blanks?
SnO2 + __ H2 → Sn + __ H2O
SnO2 + __ H2 → Sn + __ H2O
a)
5
b)
1
c)
3
d)
2
8.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
9.
What is the part of the chemical equation in green called?
Fe + S --> FeS
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
10.
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
11.
_Na3PO4 + _KOH ---> _NaOH + _ K3PO4
a)
Na3PO4 + 3 KOH ---> 3 NaOH + K3PO4
b)
2 Na3PO4 + 2 KOH ---> 3 NaOH + K3PO4
c)
Na3PO4 + 2 KOH ---> 2 NaOH + K3PO4
d)
3 Na3PO4 + 3 KOH ---> 3 NaOH + K3PO4
12.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
13.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO
N2+O2--> _NO
a)
1
b)
2
c)
3
d)
4
14.
In this image, what are the information to the right of the arrow (in black) is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
15.
Which of these are not diatomic molecules?
a)
Boron
b)
Iodine
c)
Nitrogen
d)
Oxygen
16.
Identify the type of reaction:
Ca + O2 --> CaO
Ca + O2 --> CaO
a)
Decomposition
b)
Synthesis
c)
Double Replacement
d)
Combustion
17.
Which of the following is an example of synthesis?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
18.
Which of the following is an example of decomposition?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
19.
A + B → AB : is the general form for which reaction type?
a)
Double Replacement
b)
Synthesis
c)
Combustion
d)
Decomposition
20.
When an atom loses an electron, it becomes a:
a)
positive ion
b)
negative ion
c)
neutral ion
d)
neutral atom
21.
Which of the following is a characteristic property of ionic compounds?
a)
High melting point and conductive in a solution
b)
They have low melting points
c)
They have low boiling points
d)
They contain no charged particles
22.
Elements in Group 1 lose one electron to form ions with a _________________ charge.
a)
1+
b)
2+
c)
0
d)
1-
23.
Nitrogen will ____ electrons when forming an ionic bond.
a)
gain 1
b)
lose 1
c)
gain 3
d)
lose 3
24.
What will be the compound name of the following chemical formula?
NaCl
NaCl
a)
Potassium Chloride
b)
Sodium Chloride
c)
Calcium Chloride
d)
Sodium Chlorine
25.
Ionic bonds form between metals and ____.
a)
metalloids
b)
metals
c)
nonmetals
26.
Which is the correct name for CaBr2?
a)
Calcium Bromine
b)
Bromine Calcium
c)
Calcium Bromide
d)
Carbon and Bromine
27.
What is the formula of Sodium oxide?
a)
Na2O
b)
NaO2
c)
Na2O2
d)
Na2O
28.
What is the formula of calcium oxide?
a)
CaO2
b)
CaO
c)
Ca2O
d)
CO
29.
An ionic bond is the attraction between:
a)
oppositely charged ions
b)
similarly charged ions
c)
neutral ions
d)
neutral atoms
30.
Which of the following is ionic?
a)
NO2
b)
MgO
c)
CO
d)
CH4
31.
If an aluminum atom has 13 protons (+) and 10 electrons (-), what is it's charge?
a)
Al3+
b)
Al13+
c)
Al10+
d)
Al10-
32.
If an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?
a)
O10-
b)
O8+
c)
O2-
d)
O10+
33.
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
34.
How are covalent bonds explained?
a)
When one atom transfers electrons to another atom
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
35.
What is the proper name for CaCl2?
a)
Calcium dichloride
b)
Monocalcium dichloride
c)
Calcium chloride
d)
Calcium chlorine
36.
What is the proper name for N2O3?
a)
Sulfur oxide
b)
Nitrogen dioxide
c)
Nitrogen (II) oxide
d)
dinitrogen trioxide
37.
With the ________ you must have 8 electrons on the outside ring.
a)
anions
b)
ionic bonds
c)
cations
d)
octet rule
38.
What is the chemical name for: NO
a)
Mononitrogen monoxide
b)
nitrogen oxide
c)
nitrogen monoxide
d)
nitrate monoxide
39.
What is the chemical name for: SO3
a)
Monosilicon Trioxide
b)
Sulfate trioxide
c)
Sulfur trioxide
d)
Monosulfate oxide
40.
What is the chemical formula for: Phosphorus tribromide
a)
PBr
b)
PBr7
c)
P4Br4
d)
PBr3
41.
Which of the following is NOT formed by a covalent bond?
a)
K2S
b)
H2O
c)
I2
d)
CO2
42.
What is correct formula for - Lithium Iodide
a)
LiI
b)
Li2I
c)
LiI2
d)
Li3I
43.
Choose the correct formula for Sodium Chloride.
a)
SC
b)
SCl
c)
NaCl
d)
SCl2
44.
Which substance contains an ionic bond? (use a periodic table)
a)
F2
b)
H2O2
c)
MgBr2
d)
CO
45.
Which substance contains an covalent bond? (use a periodic table)
a)
CH4
b)
OMg
c)
MgBr2
d)
LiF
46.
Which of these is covalent?
a)
NaCl
b)
Pb(NO3)2
c)
CO2
d)
AlCl3
47.
Mono means
a)
3
b)
2
c)
1
d)
4
48.
The correct formula for Dicarbon Pentachloride is
a)
CCl4
b)
C2Cl5
c)
C5Cl4
49.
The correct formula for N4F6 is
a)
Tetranitrogen Hexafluoride
b)
Nitrogen Hexafluoride
c)
Trinitrogen Pentafluoride
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