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AP Chem Midterm Review Flashcards | StudBud
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AP Chem Midterm Review
AP Chem Midterm Review
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AP Chem Midterm Review. Disclaimer: Not all questions belong to me.
Flashcards
35 cards
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Questions
35
Answers
1
True or False? Nonpolar molecules have Dipole movement
False
True
I don't know
2
Which of the following statement is false in the Collision Theory?
Particles will separate after reaction occurs
Particles must hit with proper orientation
Particles must hit with sufficiently high energy
Particles must move away from each other
3
Which of the following molecules is nonpolar but has polar covalent bonds?
H2O
H2O2
CCl4
N2
4
A glowing splint inserted into a tube full of a colorless gas is extinguished. This gas is...
N2
O2
NO2
Br2
5
Formula showing the lowest whole number ratio of atoms in a compound
Atomic Formula
Empirical Formula
Molecular Formula
Molarity Formula
6
Arrange the following elements in order of increasing atomic radii: K, Na, Mg, Cs, Cl
Cs < K < Cl < Mg < Na
Cl < Mg < Cs < K < Na
Cl < Mg < Na < K < Cs
Na < Mg < Cl < K < Cs
7
__ is a certain crystalline substance that has a low MP,doesn’t conduct electricity in solution
a polymer
a metallic solid
a molecular solid
a covalent network solid
8
One of the following oxides is insoluble in water:
SiO2
N2O5
SO3
SO2
9
Cations are…
Positive ions, nonmetals
Negative ions, nonmetals
Positive ions, metals
Negative ions, metals
10
What is the electron configuration of tin, Sn?
[Kr]5s23d103f145p4
[Kr]5s23d104f145p2
[Kr]5s24d105p2
[Kr]5s23d104d145p4
11
____: "Every orbital in a sublevel is singly occupied before any orbital is doubly occupied"
Beer’s Law
Hess’s Law
Hund's Rule
Atomic Theory
12
Best explanation for the fact that most gases are easily compressed is that the molecules
are relatively far apart
are in constant motion
have a real, nonzero volume
have relatively small masses
13
Which of these compounds will have the highest lattice energy?
BaS
SrS
MgS
CaS
14
Which of the following is a weak acid in aqueous solution?
H2S
HCl
HClO4
HNO3
15
Which one of the following molecules has a central atom that is not sp3 hybridized?
H2O
SF4
NH3
CH4
16
Which of the following statements about real gases is incorrect?
The pressure decreases as the temperature increases
The density of an air sample decreases as pressure decreases
Air has a measurable mass
The pressure decreases as altitude increases
17
Which one of the following molecules is polar?
N2
CO2
H2O
P4
18
Reaction when one of the reactants is Oxygen
Oxidation
Decomposition
Synthesis
Combustion
19
Graham’s Law states
The heavier the gas’s gfm, the slower it enfuses
The lighter the gas’s gfm, the slower it enfuses
The mass of gas have no effect on the rate of effusion
The heavier the gas’s gfm, the faster it enfuses
20
A 0.1M solution of which of the following is colorless?
KMnO4
Ni(NO3)2
Na2CrO4
MgCl2
21
Process of chromatography separates
substances through freezing
substances based on difference in intermolecular forces
solids from liquids
substances based on boiling point
22
How many valence electrons does a phosphorus atom have?
5
6
3
2
23
Which of the following is not a strong acid?
HNO3
HBr
HSO4
HClO4
24
Which of the following is the best piece for preparing 500.0 mL of an aqueous solution?
Erlenmeyer flask
Test tube
Volumetric flask
Graduated beaker
25
The amount of energy required to remove an electron from a gaseous atom or ion is known as
Lattice Energy
Electron Energy
Electronegativity
Ionization Energy
26
As the size increase, LDF
Decreases
Increases
Remains the same
27
The insoluble compound formed out of precipitation is called a
Acid or Base
Salt
Covalent
Precipitate
28
What is the formal charge on the nitrogen atom in the amide ion, H2N-?
0
-1
1
-3
29
How many resonance structures does O3 have?
4
1
3
2
30
In a polar covalent bond, the electrons in the bond are
lost
shared equally
gained
shared unequally
31
Which of the following aqueous solutions has the lowest freezing point?
0.2mol NaCl
0.2mol H2SO4
0.2mol Al(NO3)3
0.2mol CaCl2
32
Volume of H2O that must be added in order to dilute 40 mL of 9.0M HCl to a 6.0 M is closest to
40 mL
10 mL
30 mL
20 mL
33
Hydrocarbons containing only C-C single bonds are known as
alkene
alkine
alkane
alkyne
34
Sum 2.834 + 5.7152 + 2.12 + 178.1 + 250.2619 expressed to the proper number of sig fig is
439.0
440
439.03
439.031
35
What does NH₄OH dissociate into?
NH4+ and H2O
It does not dissociate
NH4⁺ and OH⁻
NH3+ and H2O
