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Honors Unit 7 Test Version B

MC Identify the choice that best completes the statement or answers the question.
 

 1. 
A neon sign is being made with 80 grams of neon.  How many atoms are contained the neon sign?
a.
1.20 x 1024 atoms
c.
4.80 x 1024 atoms
b.
2.40 x 1024 atoms
d.
6.02 x 1023 atoms
 

 2. 
How many moles of aluminum are needed to react completely with 1.2 mol of FeO?
2Al(s) + 3FeO(s) ® 3Fe(s) + Almc002-1.jpgOmc002-2.jpg(s)
a.
0.8 mol
b.
1.2 mol
c.
1.6 mol
d.
2.4 mol
 

 3. 
Chemical equations must be balanced to satisfy
a.
the law of conservation of mass.
b.
the law of multiple proportions.
c.
Avogadro’s principle.
d.
the law of definite proportions.
 

 4. 
In a combustion reaction, one of the reactants is
a.
nitrogen.
b.
hydrogen.
c.
a metal.
d.
oxygen.
 

 5. 
When glucose is consumed, it reacts with oxygen in the body to produce carbon dioxide, water, and energy. How many grams of carbon dioxide would be produced if 45 g of Cmc005-1.jpgHmc005-2.jpgOmc005-3.jpg completely reacted with oxygen?
a.
11 g
b.
66 g
c.
1.5 g
d.
1.8 g
 

 6. 
Which of the following is true about limiting and excess reagents?
a.
The amount of product is determined by the limiting reagent.
b.
The reactant that has the smallest given mass is the limiting reagent.
c.
A balanced equation is not necessary to determine which reactant is the limiting reagent.
d.
Both reagents are left over after the reaction is complete.
 

 7. 
In the chemical equation Hmc007-1.jpgOmc007-2.jpg(aq) ® Hmc007-3.jpgO(l) mc007-4.jpg Omc007-5.jpg(g), the mc007-6.jpg is a ____.
a.
catalyst
b.
product
c.
reactant
d.
solid
 

 8. 
Glucose, Cmc008-1.jpgHmc008-2.jpgOmc008-3.jpg, is a good source of food energy. When it reacts with oxygen, carbon dioxide and water are formed. How many liters of COmc008-4.jpg are produced when 126 g of glucose completely react with oxygen?
Cmc008-5.jpgHmc008-6.jpgOmc008-7.jpg(s) + 6Omc008-8.jpg(g) mc008-9.jpg 6COmc008-10.jpg(g) + 6Hmc008-11.jpgO(l) + 673 kcal
a.
94.1 L
b.
4.21 L
c.
15.7 L
d.
5.33 L
 

 9. 
What is the formula mass of calcium nitrate, Ca(NO3)2?
a.
70.0 g
c.
102 g
b.
150 g
d.
164 g
 

 10. 
In which of the following is the name and formula given correctly?
a.
sodium oxide, NaO
b.
tin (IV) fluoride, SnFmc010-1.jpg
c.
barium nitride, BaN
d.
cobaltous chloride, CoClmc010-2.jpg
 

 11. 
A person attemps to fill their car tires with 9.03x1023 molecules of nitrogen gas (N2).  How many moles did the person attempt to put in the tires?
a.
0.667 moles
c.
42.0 moles
b.
33.6 moles
d.
1.50 moles
 

 12. 
Which statement is true if 12 mol CO and 12 mol Femc012-1.jpgOmc012-2.jpg are allowed to react?
3CO(g) + Femc012-3.jpgOmc012-4.jpg(s) mc012-5.jpg 2Fe(s) + 3COmc012-6.jpg(g)
a.
The limiting reagent is CO and 8.0 mol Fe will be formed.
b.
The limiting reagent is CO and 3.0 mol COmc012-7.jpg will be formed.
c.
The limiting reagent is Femc012-8.jpgOmc012-9.jpg and 24 mol Fe will be formed.
d.
The limiting reagent is Femc012-10.jpgOmc012-11.jpg and 36 mol COmc012-12.jpg will be formed.
 

 13. 
Sulfur dioxide is the cause of acid rain and is common pollutant caused by volcanic eruptions, the burning of fossil fuels, and the exhaust from industrial facilities.  What is the mass in gram of 0.75 mole of SO2? (MM: 64.07 g/mol)
a.
32 g
c.
24 g
b.
16 g
d.
48 g
 

 14. 
Which of the following is a balanced equation representing the decomposition of lead(IV) oxide?
a.
PbOmc014-1.jpg mc014-2.jpg Pb mc014-3.jpg 2O
b.
Pbmc014-4.jpgO mc014-5.jpg 2Pb mc014-6.jpg O
c.
PbO mc014-7.jpg Pb mc014-8.jpg Omc014-9.jpg
d.
PbOmc014-10.jpg mc014-11.jpg Pb mc014-12.jpg Omc014-13.jpg
 

 15. 
An environmental chemist is analyzing SO2 (MM: 64.07 g/mol) and has ordered a tank of the gas from a company who labled the tank as 16.0 grams of SO2.  The volume of the tank of SO2 (g)  at STP is closest to
a.
22.4 L
c.
5.60 L
b.
11.2 L
d.
44.8 L
 

 16. 
What are the coefficients that will balance the equation below?
Nmc016-1.jpg + Hmc016-2.jpg mc016-3.jpg NHmc016-4.jpg
a.
3, 1, 2
b.
1, 3, 3
c.
1, 3, 2
d.
1, 1, 2
 

 17. 
Which of the following is true about the composition of ionic compounds?
a.
They are composed of cations only.
b.
They are composed of anions and cations.
c.
They are formed from two or more nonmetallic elements.
d.
They are composed of anions only.
 

 18. 
How many grams of Hmc018-1.jpgPOmc018-2.jpg are produced when 10.0 moles of water react with an excess of Pmc018-3.jpgOmc018-4.jpg?
mc018-5.jpg
a.
6.7 g
b.
1.22 g
c.
653 g
d.
147 g
 

 19. 
What is the maximum number of grams of PHmc019-1.jpg that can be formed when 6.2 g of phosphorus reacts with 4.0 g of hydrogen to form PHmc019-2.jpg?
Pmc019-3.jpg(g) + 6Hmc019-4.jpg(g) mc019-5.jpg 4PHmc019-6.jpg(g)
a.
45 g
b.
270 g
c.
0.43 g
d.
6.8 g
 

 20. 
When the equation KClOmc020-1.jpg(s) mc020-2.jpg KCl(s) + Omc020-3.jpg(g) is balanced, the coefficient of KClO3 is
a.
1.
b.
3.
c.
2.
d.
4.
 

 21. 
Ethanol (C2H5OH) is used in hand sanatizer.  If 115 grams of C2H5OH is used to to make a batch of hand sanatizer, then how many moles are present in the batch? (MM: 46.08 g/mol)
a.
2.50 mol
c.
3.00 mol
b.
1.00 mol
d.
1.50 mol
 

 22. 
In the reaction 2CO(g) + Omc022-1.jpg(g) ® 2COmc022-2.jpg(g), what is the ratio of moles of oxygen used to moles of COmc022-3.jpg produced?
a.
1:1
b.
2:2
c.
2:1
d.
1:2
 

 23. 
What is the percent composition by mass of sulfur in the compound MgSO4 (gram-formula mass = 120. g/mol)?
a.
53 %
c.
46 %
b.
20 %
d.
27 %
 

 24. 
How many moles of Hmc024-1.jpgPOmc024-2.jpg are produced when 71.0 g Pmc024-3.jpgOmc024-4.jpg reacts completely to form Hmc024-5.jpgPOmc024-6.jpg?
mc024-7.jpg
a.
0.063 5 mol
b.
4.00 mol
c.
1.00 mol
d.
16.0 mol
 

 25. 
What are the missing coefficients for the skeleton equation below?
Almc025-1.jpg(SOmc025-2.jpg)mc025-3.jpg(aq) mc025-4.jpg KOH(aq) ® Al(OH)mc025-5.jpg(aq) mc025-6.jpg Kmc025-7.jpgSOmc025-8.jpg(aq)
a.
2, 12, 4, 6
b.
4, 6, 2, 3
c.
1, 3, 2, 3
d.
1, 6, 2, 3
 

 26. 
Which of the following factors contributes to the increase in atomic size within a group on the periodic table?
a.
an increase in number of protons
b.
more energy levels as you go down a group
c.
fewer electrons in the highest occupied energy level
d.
an increase in size of the nucleus
 

 27. 
One of the products when aqueous Namc027-1.jpgCOmc027-2.jpg reacts with aqueous Sn(NOmc027-3.jpg)mc027-4.jpg is
a.
CNOmc027-5.jpg
b.
NaNOmc027-6.jpg
c.
Sn(COmc027-7.jpg)mc027-8.jpg
d.
NaSn
 

 28. 
Why do atoms share electrons in covalent bonds?
a.
to become more polar
b.
to increase their atomic numbers
c.
to become ions and attract each other
d.
to attain a full valence energy level and become stable
 

 29. 
In order for the reaction 2Al mc029-1.jpg 6HCl mc029-2.jpg 2AlClmc029-3.jpg mc029-4.jpg 3Hmc029-5.jpg to occur, which of the following must be true?
a.
A precipitate must be formed.
b.
Al must be above Cl on the activity series.
c.
Heat must be supplied for the reaction.
d.
Al must be above H on the activity series.
 

 30. 
How many valence electrons are in a silicon atom?
a.
2
b.
8
c.
6
d.
4
 

 31. 
Which of the following compounds is NOT an ionic compound?
a.
NaCl
c.
Li(NO3)
b.
MgBr2
d.
CO2
 

 32. 
In a double-replacement reaction, the
a.
reactants are two ionic compounds.
b.
reactants are two elements.
c.
products are always molecular.
d.
products are a new element and a new compound.
 

 33. 
The equation below shows the decomposition of lead nitrate. How many grams of oxygen are produced when 11.5 g NOmc033-1.jpg is formed?
mc033-2.jpg
a.
32.0 g
b.
2.00 g
c.
1.00 g
d.
2.88 g
 

Matching
 
 
Match each item with the correct statement below.
a.
activity series of metals
c.
combustion reaction
b.
single-replacement reaction
d.
decomposition reaction
 

 34. 

 a reaction in which a single compound is broken down into simpler substances
 

 35. 

 a reaction in which oxygen reacts with another substance, often producing heat or light
 

 36. 

 a reaction in which the atoms of one element replace the atoms of a second element in a compound
 

 37. 

 a list of metals in order of decreasing reactivity
 



 
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