WorksheetsUnit 9 Review
Total questions: 30
Worksheet time: 50mins
Name
Class
Date
1.
How many atoms of Oxygen are in Fe(NO3)3 ?
a)
6
b)
3
c)
9
d)
1
2.
How many oxygen atoms are found here?
Mg(NO3)2
a)
2
b)
4
c)
6
d)
8
3.
Match the formula to the description:
a)
SO3
1.
1 sulfur, 3 oxygen's
b)
2 SO3
2.
2 sulfur's, 6 oxygen's
c)
2 S2O3
3.
4 sulfur's, 6 oxygen's
d)
3 SO4
4.
3 sulfur's, 12 oxygen's
e)
SO4
5.
1 sulfur, 4 oxygen's
4.
Mg + ___ HCl → MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
5.
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.
6.
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
7.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
8.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
6
c)
8
d)
24
9.
What are the coefficient used to balance the equation below?
__Ag2O →__ Ag +___O2
__Ag2O →__ Ag +___O2
a)
2,4,1
b)
1,1,1
c)
2,1,2
d)
2,2,2
10.
An ionic compound of calcium and chlorine would be named
a)
calcium chlorine.
b)
calcium chlorite.
c)
calcium chloride.
d)
chlorine calcium.
11.
A covalent compound made of one sulfur and two oxygen atoms would be named
a)
sulfur dioxide.
b)
sulfur oxide.
c)
disulfur oxide.
d)
sulfide oxygen.
12.
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.
13.
The covalent compound N2O5 would be named
a)
nitrogen oxide.
b)
dinitrogen oxide.
c)
nitrogen pentoxide.
d)
dinitrogen pentoxide.
14.
The chemical formula for an ionic compound of aluminum and chlorine is
a)
AlCl.
b)
ClAl.
c)
AlCl3.
d)
Al3Cl.
15.
What type of compound is Ca3N2?
a)
covalent
b)
simple ionic
c)
polyatomic ionic
d)
multivalent ionic
16.
KNO3 is used in fertilizers as a source of potassium and nitrogen. If you want to buy fertilizer with this compound, what chemical name should you look for?
a)
potassium nitrate
b)
potassium nitrite
c)
potassium nitride
d)
potassium nitrogen
17.
Write formulas for the following compound:
tin (II) fluoride
tin (II) fluoride
a)
SnF2
b)
Sn2F
c)
FeF2
d)
Fe2F
18.
Which of these combinations is an ionic compound made of?
a)
Metal and Metal
b)
Nonmetal and Nonmetal
c)
Metal and Nonmetal
d)
Cation and Cation
19.
One reactant turns into several products.
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
20.
What type of reaction occurs between an element and a compound?
Ex: Zn + 2HCl --> ZnCl2 + H2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
21.
What kind of reaction is this:
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
22.
What kind of reaction is this:
2H2O2 →2 H2O + O2
2H2O2 →2 H2O + O2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Combustion
23.
The reaction below is an example of?
AgNO3 + NaCl → AgCl + NaNO3
AgNO3 + NaCl → AgCl + NaNO3
a)
Single Replacement
b)
Double Replacement
c)
Decomposition
d)
Combustion
24.
Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
a)
double replacement
b)
decomposition
c)
combustion
d)
single replacement
25.
What is the name of Br6F10 ?
a)
Bromium fluoride
b)
Hexabromine fluoride
c)
Bromium decafluoride
d)
none of the above
26.
The chemical formula of tetraphosphorus heptaoxide is
a)
F₄O₁₀
b)
P₄O7
c)
PO
d)
P₁₀O₄
27.
What is the charge of copper in the compound: CuBr2
a)
+1
b)
+2
c)
-1
d)
-2
28.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
29.
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
30.
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
100 %
