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WorksheetsChemistry Final Review
Total questions: 54
Worksheet time: 3hrs 42mins
What rule says that atoms must be surrounded by 8 valence electrons in order to be stable?
atomic rule
bonding rule
octet rule
electron rule
Based on the octet rule, what charge will an aluminum ion have?
+3
-3
+5
-5
What is the formula for magnesium oxide?
MgO2
Mg2O
MgO
Mg2O2
What is the formula for lithium sulfate?
LiSO4
LiSO3
Li2SO4
Li2S
Name the following compound: AgNO3
Gold (I) nitrate
Gold (III) nitrate
Silver (I) nitrate
Silver nitrate
Name the following compound: CuS
Copper sulfide
Copper (I) sulfide
Copper (II) sulfide
Copper sulfate
Name the following compound: Mn(SO4)2
Manganese sulfate
Magnesium sulfate
Manganese (II) sulfate
Manganese (IV) sulfate
How many valence electrons does the lewis structure for aluminum have?
1
3
5
13
Hexasulfur tetrachloride is represented by which formula?
S6Cl4
S4Cl6
SCl
S3Cl2
Name the following covalent compound: N2O5
Nickel oxide
Nickel (V) oxide
Dinitrogen pentoxide
Pentanitrogen dioxide
What is the central atom in the molecule CH4?
C
CH
H
Ch
What type of bond exists in a molecule of O2?
Single
Double
Triple
What type of bond exists in a molecule of H2?
Single
Double
Triple
Which bond is the MOST POLAR?
H-H
H-F
F-F
Which bond would be non-polar?
H-H
H-F
N-C
O-H
Draw the lewis structure for carbon dioxide. How many lone pairs are on the central atom?
0
1
2
4
Electrons are SHARED in a ____ bond.
Ionic
Covalent
A molecule has 4 bonded regions and 0 lone pairs on the central atom. What VSEPR shape does the molecule have?
Tetrahedral
Disphenoidal
Square planar
Square pyramidal
Draw the lewis structure for FBr5. What VSEPR shape does this molecule have?
Trigonal bipyramidal
Square pyramidal
Octahedral
Square planar
In a chemical reaction, atoms are rearranged to form new substances.
True
False
In a chemical reaction, the following symbol is used to designate "yields" or "produces"
Arrow
Coefficient
Plus sign
Equals sign
Given the reaction: Al + Br2 --> AlBr3, Al and Br2 are ____.
Reactants
Products
Subscripts
Coefficients
Which of the following signs means a substance is dissolved in water?
(s)
(l)
(g)
(aq)
Which of the following is a synthesis reaction?
A + X --> AX
BD --> B + D
A + BC --> B + AC
AB + CD --> AD + CB
Which of the following is a decomposition reaction?
A + X --> AX
BD --> B + D
A + BC --> B + AC
AB + CD --> AD + CB
Which of the following is a single replacement reaction?
A + X --> AX
BD --> B + D
A + BX --> B + AX
AB + CD --> AD + CB
Which of the following is a double replacement reaction?
A + X --> AX
BD --> B + D
A + BX --> B + AX
AB + CD --> AD + CB
CH4 + O2 --> CO2 + H2O is an example of what type of reaction?
Synthesis
Double replacement
Single replacement
Combustion
Decomposition
What would be the product(s) of this synthesis reaction:
Ba + O2 -->
BaO2
Ba2O
BaO
Ba2O2
What would be the products of this single replacement reaction:
Mg + SrSO4
Mg + SrSO4
Sr + MgSO4
MgSrSO4
No reaction
What would be the outcome of the following single replacement reaction:
Ba + CuNO3 -->
Ba + CuNO3
Cu + BaNO3
Cu + Ba(NO3)2
No reaction
What are the products of the following decomposition reaction:
Fe2O3 -->
Fe2 + O3
Fe + O
Fe + O2
FeO
What are the products of the double replacement reaction:
Ba(NO3)2 + AlCl3 -->
BaCl3 + Al(NO3)2
BaCl2 + Al(NO3)3
BaAl + ClNO3
BaCl2 + Al3NO
Which substance is insoluble?
Potassium iodide
Sodium sulfate
Aluminum nitrate
Aluminum hydroxide
Identify the precipitate in the reaction:
Li2CO3 + AlCl3 --> Al2(CO3)3 + LiCl
Li2CO3
AlCl3
Al2(CO3)3
LiCl
In a chemical reaction, the mass of the reactants should be ____ the mass of the products.
greater than
less than
equal to
A substance that is formed in a chemical reaction is called a ___.
Reactant
Product
Coefficient
Mole
Which of the following quantities is equal to 1 mole?
6.02 x 10^23 particles of Ag
20.18 g of Neon
16 g of CH4
All of the above
1 mole of water = 6.02 x 10^23 molecules of water.
True
False
Which compound has the largest mass?
Sodium chloride
Water
Sodium hydroxide
Barium carbonate
How many moles are in 9.4 x 10^25 particles of Neon?
(a)
What is the mass in grams of 4.1 x 10^23 atoms of phosphorus?
0.681 g
21.09 g
45.47 g
What is the mass of lithium sulfate?
(a)
In a sample weighing 230 g, how many moles of carbon dioxide are present?
5.23 moles
8.21 moles
3.8 x 10^-22 moles
1.38 x 10^25 moles
How many molecules are present in 12.9 g of CO?
361.33 molecules
2.77 x 10^23 molecules
0.461 molecules
How many moles of hydrogen gas are produced from 6 moles of Al per the equation: 2 Al + 6 HCl --> 2 AlCl3 + 3 H2
2
3
6
9
How many moles of oxygen gas are needed to produce 4 moles of sulfur trioxide gas according to the following equation: 2 SO2 + O2 --> 2 SO3
2
4
1
6
How many moles of chlorine are needed to produce 0.896 moles of BiCl3 per the following equation: 2 Bi + 3 Cl2 --> 2 BiCl3
1.34
2.69
0.598
0.896
The limiting reactant is defined as:
The reactant you have the most of
The reactant you have the least of
The reactant that produces the least product
The reactant that produces the most product
What is the percent nitrogen in magnesium nitrate?
14%
28%
19%
64%
In which diagram is Zn the limiting reactant?
i
ii
iii
How many compounds of ZnS can be formed in diagram ii?
1
2
4
5
9
How many excess atoms of S will be in diagram i?
0
1
2
3
In which diagram will there be no excess reactant?
i
ii
iii
