Download Differentiated Chemistry First Term Test Review

Differentiated Chemistry First Term Test Review
TR – DC – T1
NOTE:
ANY TALKING OR SUSPICIOUS COMMUNICATION DURING OR AFTER THE TEST
WILL RESULT IN AN AUTOMATIC GRADE OF 0%.
Multiple Choice.
On the scantron sheet for each question, fill in the rectangle corresponding with the
upper-case letter of the answer that best completes or answers the statement or
question. NOTE: If the rectangle is not completely filled in or not otherwise done
correctly (i.e., done in pen, etc.), the answer may be considered incorrect and will
not be checked by the teacher personally (all grading is done via the scantron
machine). (3 points each)
For questions 1 – 8, categorize the description or example as the best of the following choices:
(A) gas
(B) liquid
(C) plasma
(D) solid
1.
Lightning
2.
Does not have the ability to flow
3.
Can flow, but particles are close to each other
4.
Characterized by the highest temperature for a neutral substance
5.
Characterized by the highest temperature for charged substances
6.
Particles are generally the closest to each other
7.
Particles can vibrate around each other in close proximity while still moving around
8.
Possesses an indefinite shape and an indefinite volume and neutral representative particles
9.
Volume is calculated by ___.
(A) dividing weight by density
(B) multiplying mass by density
10.
11.
(C) dividing density by mass
(D) dividing mass by density
Group 1A of the periodic table of elements contains the ___.
(A) alkali metals
(B) alkaline earth metals
(C) halogens
(D) noble gases
Group 8A of the periodic table of elements contains the ___.
(A) alkali metals
(B) alkaline earth metals
(C) halogens
(D) noble gases
12.
How many valence electrons does a neutral atom of aluminum have?
(A) 0
(B) 3
(C) 5
(D) 8
13.
How many valence electrons does an aluminum ion have?
(A) 0
(B) 3
(C) 5
(D) 8
14.
How many valence electrons does a neutral atom of aluminum lose to become an aluminum ion?
(A) 0
(B) 3
(C) 5
(D) 8
page 1 – TR – DC – T1
15.
How many valence electrons does an atom of any alkaline earth metal have?
(A) 0
(B) 1
(C) 2
(D) 7
16.
Saltwater is a ___ solution.
(A) solid-gas
(B) solid-liquid
(C) solid-solid
(D) liquid-liquid
For questions 17 – 30, categorize the description or example as the best of the following choices:
(A) chemical change
(B) chemical property
(C) physical change
(D) physical property
17.
Decomposing
24.
Cutting
18.
Explosive
25.
Dissolving
19.
Volatile
26.
Solubility in acetone
20.
Melting
27.
Splitting
21.
Boiling
28.
Reactivity with a base
22.
Boiling point
29.
Odor
23.
Crushing
30.
Hardness
31.
Which of the following elements does not exist as a diatomic molecule?
(A) Bromine
(B) Chlorine
(C) Oxygen
(D) Sulfur
32.
What is the formula for nitric acid?
(A) H3N
(B) HNO
(C) HNO2
(D) HNO3
33.
What is the formula for lead (II) sulfide?
(A) PbS
(B) PbS2
(C) Pb2S
(D) Pb4S3
34.
What is the formula for manganese (II) bromide?
(A) MnBr
(B) MnBr2
(C) Mn2Br
(D) Mn3Br
35.
Which of the following is the name for the compound with formula CrO3?
(A) chromium (II) oxide
(C) chromium (VI) oxide
(B) chromium (III) oxide
(D) dichromium trioxide
36.
Which of the following is the name for the compound with formula HF?
(A) Fluoric acid
(C) Hydrofluoric acid
(B) Hydrofluorous acid
(D) Hydrofluorate acid
37.
What of the following is the name for the compound with formula AlPO4?
(A) aluminum diphosphate
(C) aluminum (III) phosphate
(B) aluminum (II) phosphate
(D) aluminum phosphate
38.
Which set of chemical name and chemical formula for the same compound is correct?
(A) iron (III) oxide, Fe2O3
(C) tin (I) bromide, SnBr4
(B) magnesium (II) chloride, MgCl2
(D) potassium chloride, K4Cl4
page 2 – TR – DC – T1
39.
Which set of chemical name and chemical formula for the same compound is correct?
(A) ammonium sulfate, (NH4)2SO4
(C) potassium chlorate, KCl
(B) lead (II) phosphate, Pb2PO4
(D) lithium sulfite, Li2S
40.
What is the formula for ammonium phosphate?
(A) NH4PO4
(B) (NH4)3P
(C) (NH4)3PO3
(D) (NH4)3PO4
41.
The Roman numeral in iron (III) sulfide indicates the ___.
(A) number of sulfide ions in the formula
(B) the number of iron ions needed in the formula
(C) group number on the periodic table
(D) positive charge on the iron ion
42.
Which of the following is NOT a chemical change?
(A) detonating
(B) decomposing
(C) rusting
(D) condensing
43.
If a milliliter of water decreases in density but maintains its same mass, its temperature ___.
(A) increases
(B) decreases
(C) stays the same
44.
Which element is a transition metal?
(A) calcium
(B) phosphorus
(C) copper
(D) plutonium
Which element is a representative element?
(A) silver
(B) germanium
(C) cadmium
(D) californium
45.
46.
Which of the following formulas represents an ionic compound?
(A) NH4Cl
(B) PF5
(C) CO
(D) CO2
47.
Molecular compounds are only composed of ___.
(A) metals and nonmetals
(C) metals
(B) nonmetals
(D) cations and anions
48.
How many significant figures are there in the measurement 0.004 kg?
(A) 1
(B) 2
(C) 3
(D) 4
49.
How many significant figures are there in the measurement 0.0040 mg?
(A) 1
(B) 2
(C) 3
(D) 4
50.
How many significant figures are there in the measurement 40 mg?
(A) 1
(B) 2
(C) 3
(D) 4
51.
What is the measurement 111.009 mm rounded off to five significant digits?
(A) 111 mm
(B) 111.0 mm
(C) 111.01 mm
(D) 110 mm
For questions 52 – 63, categorize the description or reaction example as the best of the following
choices:
(A) synthesis (B) decomposition (C) single-replacement (D) double-replacement (E) combustion
52.
Only one reactant
53.
Only one product
page 3 – TR – DC – T1
54.
An alkali metal reacting with water
55.
2Mg(s) + O2(g) → 2MgO(s)
56.
Zn(s) + 2HCl(aq) → H2(g) + ZnCl2(aq)
57.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
58.
Aluminum sulfate reacting with ammonium nitrate
59.
Electricity being passed through water to generate hydrogen gas and oxygen gas
60.
A diatomic molecule and an aqueous ionic compound as reactants
61.
Cations are exchanged in this kind of reaction.
62.
2NaCN(aq) + H2SO4(aq) → 2HCN(g) + Na2SO4(aq)
63.
Reaction that most often requires energy in the form of heat, light, or electricity in order to occur
64.
Which of the following cannot be classified as a substance?
(A) ammonium nitrate
(B) brass
(C) aluminum
(D) oxygen
65.
A conversion factor ___.
(A) is equal to one
(B) is a ratio of different measurements
(C) changes the value of a measurement
(D) all of the above
66.
Which are used for rounding when performing the operation 3.00 x 5.0: significant figures or
decimal places?
(A) significant figures
(B) decimal places
(C) neither
67.
Which are used for rounding when performing the operation 3.00 + 5.0: significant figures or
decimal places?
(A) significant figures
(B) decimal places
(C) neither
68.
Which of the following ratios is a correct conversion factor for changing centimeters to meters?
0.01 cm
100 m
100 cm
0.01 m
(A)
(B)
(C)
(D)
1m
1m
1 cm
1 cm
69.
Six kilometers is equal to ___ millimeters.
(A) 6.0 x 10–6
(B) 6.0 x 10–5
(C) 6.0 x 105
70.
Sulfuric acid reacts with sodium hydroxide to yield sodium sulfate and water. If 37 grams of
sulfuric acid react with 30. grams of sodium hydroxide, how many grams of water are produced?
(A) 53 g
(B) 14 g
(C) 37 g
(D) 45 g
(E) 106 g
71.
When magnesium hydroxide reacts with the hydrochloric acid in your stomach, water and
magnesium chloride are produced. What mass of hydrochloric acid is required to completely react
with 3.00 grams of magnesium hydroxide?
(A) 30.7 g
(B) 3.75 g
(C) 11.5 g
(D) 4.90 g
(E) 1.25 g
page 4 – TR – DC – T1
(D) 6.0 x 106
72.
Consider the reaction HgS + O2 --> SO2 + Hg. If 200.0 grams of HgS reacted with 150.0 grams
of O2, what is the limiting reagent?
(A) HgS
(B) O2
(C) neither
(D) not enough information is provided
73.
25.0 mL of a 0.175 M solution of KOH is diluted with pure water to a final volume of 750.0 mL.
What is the final molarity of the KOH solution?
(A) 0.00583 M
(B) 0.0163 M
(C) 0.0333 M
(D) 0.229 M
74.
Fe can be prepared as 2Al + Fe2O3 --> 2Fe + Al2O3. Suppose that 0.450 moles of Fe2O3 are
reacted with an excess of Al. Suppose that 43.6 grams of Fe are obtained. What is the percent
yield of Fe?
(A) 16.2%
(B) 43.4%
(C) 60.7%
(D) 86.7%
75.
What is the molarity of a solution in which 26.0 grams of BaCl2 (molar mass = 208.2 g/mol) are
dissolved in enough water to make 450.0 mL of solution?
(A) 0.278 M
(B) 0.617 M
(C) 1.00 M
(D) 3.41 M
76.
The mass of a mole of C12H22O11 is the ___.
(A) gram formula mass
(C) gram molecular mass
(B) gram atomic mass
(D) atomic mass
77.
When two substances react to form products, the reactant which is not used up first is called the
___.
(A) determining reagent
(D) catalytic reagent
(B) limiting reagent
(E) reactive reagent
(C) excess reagent
78.
What is the percent composition of carbon in C3H6O?
(A) 20.7%
(B) 62.1%
(C) 1.61%
(D) 30.0%
79.
What is the result of converting 0.04 kmol to centimoles?
(A) 40000 cmol
(B) 4000 cmol
(C) 40 cmol
(D) 4 cmol
80.
5.6 g/cm3 = ___ kg/m3
(A) 5.6 • 106
(B) 5.6 • 103
81.
What is the mass of oxygen in 250 g H2SO4?
(A) 0.65 g
(B) 3.9 g
(C) 16 g
(D) 41 g
(C) 5.6 • 102
(D) 5.6 • 10–3
(E) 0.4 cmol
(E) 5.6 • 10–6
(E) 160 g
82.
What is the empirical formula of a substance that is 40% sulfur and 60% oxygen by mass?
(A) SO
(B) SO2
(C) SO3
(D) S6O4
(E) S2O3
83.
Which of the following compounds has the highest percent gold content by mass?
(A) AuOH
(B) Au(OH)3
(C) AuCl3
(D) AuI3
(E) AuBr3
84.
Which of the following would be the limiting reagent in the following reaction?
2Al + 3Cl2 → 2AlCl3
(A) 100 atoms of Al
85.
(B) 100 molecules of Cl2
(C) Neither choice is limiting
When the equation, Cr + O2 → Cr2O3, is balanced, what is the coefficient for Cr?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
page 5 – TR – DC – T1
86.
How many atoms of nitrogen are there in 5.0 mol (NH4)2S?
(A) 3.4 x 102
(D) 1.5 x 1025
(B) 3.0 x 1024
(E) 6.0 x 1025
24
(C) 6.0 x 10
87.
Sodium reacts with chlorine gas to produce sodium chloride. How many grams of sodium
chloride can be produced from 5.00 x 102 g each of sodium and chlorine gas?
(A) 112 g
(B) 319 g
(C) 409 g
(D) 825 g
(E) 1650 g
88.
For the reaction SO3 + H2O → H2SO4, calculate the percent yield if 5.00 x 102 g of sulfur trioxide
react with excess water to produce 575 g of sulfuric acid.
(A) 82.7%
(B) 88.3%
(C) 91.2%
(D) 93.9%
89.
A commercially valuable paint and adhesive stripper, dimethyl sulfoxide (DMSO), (CH3)2SO, can
be prepared by the reaction of oxygen with dimethyl sulfide, (CH3)2S, using a ratio of one mole
oxygen to two moles of the sulfide:
O2 + 2(CH3)2S → 2(CH3)2SO
If this process has an 83% percent yield, how many grams of DMSO could be produced from 65
grams of dimethyl sulfide and excess O2?
(A) 68 g
(B) 75 g
(C) 83 g
(D) 51 g
(E) 47 g
90.
If 5.0 g of each reactant were used for the following process, the limiting reactant would be ___.
2KMnO4 +5Hg2Cl2 + 16HCl
10HgCl2 + 2MnCl2 + 2KCl + 8H2O
(A) KMnO4
(B) HCl
(C) H2O
(D) Hg2Cl2
(E) HgCl2
91.
How many grams of NH3 can be prepared from 77.3 grams of N2 and 14.2 grams of H2? (Hint:
Write and balance the equation first.)
(A) 13.3 g
(B) 47.0 g
(C) 79.7 g
(D) 93.9 g
(E) 120.0 g
92.
Silicon carbide, an abrasive, is made by the reaction of silicon dioxide with graphite.
SiO2 + 3C → SiC + 2CO
If 100 g of SiO2 and 100 g of C are reacted as far as possible, which one of the following
statements will be correct?
(A) 111 g of SiO2 will be left over.
(B) 44 g of SiO2 will be left over.
(C) 82 g of C will be left over.
(D) 40 g of C will be left over.
(E) Both reactants will be consumed completely, with none of either left over.
93.
Which of the following reactions will NOT take place spontaneously in the direction written?
(A) Zn + AgNO3 →
(D) Mg + Zn(NO3)2 →
(B) Al + H2SO4 →
(E) Mg + LiNO3 →
(C) Cl2 + NaBr →
94.
What is the balanced chemical equation for the reaction that takes place between lithium and
aqueous magnesium chloride?
(A) Li + MgCl → Mg + LiCl
(D) 2Li + MgCl2 → Mg + 2LiCl
(B) Li + 2MgCl → 2Mg + LiCl2
(E) No reaction occurs.
(C) Li2 + 2MgCl → 2Mg + 2LiCl
page 6 – TR – DC – T1
95.
If aqueous iron (III) bromide reacts with aqueous lithium sulfide, one of the products of this
reaction would be ___.
(A) FeS
(B) Fe3S2
(C) FeS2
(D) Fe2S
(E) Fe2S3
96.
What are the correct formulas for the products of the following double-replacement reaction?
LiOH + FePO4 →
(A) LiPO4 + FeOH
(B) Li(PO4)3 + Fe(OH)3
(C) FeLi + HPO5
(D) Li3PO4 + Fe(OH)2
(E) Li3PO4 + Fe(OH)3
97.
Which of the following is a true statement concerning limiting and excess reagents?
(A) None of the excess reagent is left over after the reaction is complete.
(B) The reactant that has the smallest given mass is the excess reagent.
(C) Adding more of the limiting reagent to the reaction chamber will cause less product to be
produced.
(D) The amount of product obtained is determined by the excess reagent.
(E) A balanced equation is not necessary to determine which reactant is the limiting reagent.
98.
For the reaction Cl2 + 2KBr → 2KCl + Br2, calculate the percent yield if 200. g of chlorine react
with excess potassium bromide to produce 410. g of bromine.
(A) 73.4%
(B) 82.1%
(C) 91.0%
(D) 98.9% (E) Not enough information
99.
When glucose (C6H12O6) reacts with oxygen gas in the body, carbon dioxide, water, and energy
are produced. How many grams of carbon dioxide would be produced if 45 grams of glucose
completely reacted with the oxygen gas?
(A) 1.5 g
(B) 1.8 g
(C) 11 g
(D) 66 g
(E) 12000 g
100.
In a particular reaction between copper metal and silver nitrate, 12.7 g copper produced 38.1
grams of silver and a certain amount of copper (II) nitrate. What is the percent yield of silver in
this reaction? (HINT: Recall silver can only ionize to become Ag+.)
(A) 29.4%
(B) 56.7%
(C) 77.3%
(D) 88.2%
(E) 176%
page 7 – TR – DC – T1