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SAT Chemistry Review
SAT Chemistry Review
49 terms
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SAT style practice for the chemistry subject test
Flashcards
49 cards
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Practice quiz
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Questions
49
Answers
1
Decreasing volume shifts left BECAUSE that decreases the pressure of the system
Correct explanation
Incorrect explanation
2
The molar mass of H
2
SO
4
is more than twice the molar mass of NaOH
True
False
3
Which species is classified as an insoluble salt?
Zn(s)
H3O+(aq)
AgI(s)
H2(g)
4
Water molecules are distributed more randomly in the gaseous state than in the liquid state
False
True
5
Which of these represents the ground-state electron configuration of a neutral aluminum Al atom
1s22s22p63s23p5
1s22s22p1
1s22s22p63s1
1s22s22p63s23p1
6
Na and Cl have different principle quantum numbers for the highest occupied energy level
False
True
7
How can some nonpolar substances be liquids at room temperature?
The molecules transfer electrons, forming opp charged ions
The molecules form positive ions held together by free e-s
The molecules share electrons, forming bonds
The molecules form temporary dipoles with partial charges
8
When 1.0 mol H
2
SO
4
reacts with 1.0 mol NaOH, NaOH is the limiting reactant
False
True
9
If the volume on a buret can be read to the nearest 0.01 mL then 20 mL is recorded as 20.00 mL
False
True
10
CCl
4
is insoluble in water BECAUSE water molecules contain polar bonds and are asymmetric
Incorrect explanation
Correct explanation
11
How much heat must be added to 10 g of ice at 0
o
C to convert to liquid water at 100
o
C
6,200 cal
1,800 cal
800 cal
1,000 cal
12
KMnO
4
reacts with Na
2
SO
3
in water to produce MnO
2
, Na
2
SO
4
and KOH. Which is the reducing agent
MnO4-
SO32-
Na+
H2O
13
Which element is the most electronegative of all the elements?
Al, aluminum
Ca, calcium
F, fluorine
C, carbon
14
Sodium and chlorine have different properties
False
True
15
Which solution(s) were prepared using weak acids
1 only
2 only
3 and 4 only
1 and 2 only
16
It is standard practice to record data to two decimal places
True
False
17
NaOH is the limiting reactant BECAUSE molar mass of H
2
SO
4
is over twice the molar mass of NaOH
Correct explanation
Incorrect explanation
18
When this equation is balanced with (lowest whole numbers) the coefficient for O
2
12
6
8
9
19
A shift toward NO
2
decreases the pressure of the system
False
True
20
A buret's volume is 20.00 mL BECAUSE it is standard practice to record data to 2 decimal places
Incorrect explanation
Correct Explanation
21
Water molecules have lone pairs of electrons that repel bonding electrons.
True
False
22
Crossing through which of the following represents a phase change directly from solid to gas?
line XZ
line WX
point Z
line XY
23
Which of the following molecules is nonpolar but has polar bonds?
Carbon dioxide (CO2)
Hydrogen chloride (HCl)
Water (H2O)
Phosphorus trichloride (PCl3
24
Which aspect of the graph provides the best evidence that the reaction is exothermic
the time needed to react point 3
The energy difference between points 1 and 2
The energy difference between points 1 and 3
The potential energy at point 2
25
If 2.0 L of air is compressed until the pressure increases from 1.0 atm to 4.0 atm. New volume
4.0 L
8.0 L
0.50 L
2.0 L
26
Which of the following describes the shape of an ammonia molecule?
Trigonal planar
Trigonalpyramidal
T-shaped
Tetrahedral
27
Which species is acting as a reducing agent?
Zn(s)
H3O+(aq)
H2(g)
AgI(s)
28
Which element often forms compounds in which it has four covalent bonds?
C, carbon
F, fluorine
Ca, calcium
Al, aluminum
29
Evaporation increases entropy BECAUSE molecules are distributed more randomly in the gas state
Incorrect explanation
Correct explanation
30
A sample of Al
2
O
3
contains 12 mol of oxygen. What is the total mass of this Al
2
O
3
sample?
102 g
408 g
192 g
1224 g
31
Evaporation and condensation rates in a closed container are the same.
Relationship between volume and temp at a constant pressure
Solid phase changing to the liquid phase
Relationship between temp and the kinetic energy of particls
A state in which the liquid/gas phases are in equilibrium
32
Each magnesium atom gains two electrons and each chlorine atom loses one electron
False
True
33
Water molecules have a bent shape.
False
True
34
Which of the following best explains the large difference in b.p.s of methane and water/
H-bonding in water increases attractive forces between mcs
Most small compounds have low boiling points, except water
Water's bp is greater because it ionizes into H+ and OH-
Methane is an organic compound
35
Which one of these properties decreases when moving left to right across a period (of the PT)
Atomic radius
Number of valence electrons
Electron affinity
Reactivity
36
Magnesium and chlorine form MgCl
2
BECAUSE each Mg gains 2 e
-
s and each Cl loses 1 electron
Correct explanation
Incorrect explanation
37
The spaces between gas particles in air increase as the temperature of the air increases.
Relationship between temp and the kinetic energy of particls
A state in which liquid/gas phases are in equilibrium
Solid phase changing to the liquid phase
Relationship between volume and temp at constant pressure
38
Carbon tetrachloride (CCl
4
) is insoluble in water
True
False
39
Evaporation of water results in an increase in entropy
False
True
40
Which COULD be the molecular formula of a hydrocarbon with the empirical formla C
2
H
3
C2H6
C6H9
C3H4
C4H6
41
Which acid could produce the following titration curve when titrated with 0.1 M NaOH
H3PO4
H2SO4(aq)
HCl(aq)
Na2CO3
42
Which element reacts with oxygen an a 2:3 ratio of element to oxygen, producing X
2
O
3
F, fluorine
Ca, calcium
Al, aluminum
C, carbon
43
Na and Cl have different properties BECAUSE they have different principle quantum numbers
Correct Explanation
Incorrect Explanation
44
Water molecules contain polar bonds and have an asymmetric shape.
True
False
45
A decrease in the volume of the sealed reaction container will shift the equilibrium toward NO
2
False
True
46
Which species is the acid of a conjugate acid-base pair?
H2(g)
Zn(s)
AgI(s)
H3O+(aq)
47
Particles vibrate faster and faster until some break from their fixed positions and move freely
Solid phase changing to the liquid phase
Relationship between volume and temp at a constant pressure
A state in which the liquid/gas phases are in equilibrium
Relationship between temp and the kinetic energy of particls
48
Water molecules have a bent shape BECAUSE they have lone pairs of e
-
s that repel bonding e
-
s
Incorrect explanation
Correct explanation
49
When magnesium (Mg) reacts with chlorine (Cl) the atoms combine in a 1 to 2 ratio to form MgCl
2
True
False
