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AP Chem Quiz #2 (Solubility, Covalent Compounds, Reaction Types, and Stoichiometry) Flashcards | StudBud
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AP Chem Quiz #2 (Solubility, Covalent Compounds, Reaction Types, and Stoichiometry)
AP Chem Quiz #2 (Solubility, Covalent Compounds, Reaction Types, and Stoichiometry)
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1
Na+(aq) + Cl-(aq) + Ag+(aq) + OH-(aq) → Na+(aq) + OH-(aq) + AgCl(s). Net Ionic Equation?
NaOH(s) → AgCl(s)
Cl-(aq) + OH-(aq) → AgCl(s)
Na+(aq) + Cl-(aq) → NaCl(s)
Cl-(aq) + Ag+(aq) → AgCl(s)
2
What is the central atom in the following compound: CCl
4
Cl
There are no central atoms
C
There are two central atoms
3
What number of entities are there in a mole?
12
6.023 x 1023
6.67 x 10-11
6.023
4
Double bonds are
Two pi bonds
One pi bond and one sigma bond
Depends on the atoms
Two sigma bonds
5
A single bond has which type of orbital bond?
Sigma
Pi
Alpha
Delta
6
Which of the following elements has zero bond sites and four lone pairs?
Hydrogen
Neon
Aluminum
Francium
7
Name the following element that is NEVER a central atom.
H
O
C
S
8
H2 → 2H+ + 2e- is which type of reaction?
Addition
Half-reaction
Redox
Synthesis
9
Which of the following polarity combinations cannot exist?
Nonpolar Bonds, Polar Molecule
Polar Bonds, Nonpolar Molecule
Nonpolar Bonds, Nonpolar Molecule
Polar Bonds, Polar Molecule
10
If a molecule has a linear shape, how many electron pairs must it have?
4
5
2
0
11
Addition Reactions must have a product with a coefficient of
Doesn't matter
2
1
3
12
Redox reactions are composed of two
Oxidation Reactions
Half-Reactions
Synthesis Reactions
Reduction Reactions
13
How many moles are in 24 g of Carbon?
2
Unsolvable
1
0.5
14
What is the range of Δelectronegativity for a molecule to be considered polar covalent?
0-3.3
0.4-1.7
1.7-3.3
0-1.7
15
How much grams would a mol of Hydrogen atoms weigh?
1000 g
1 g
0.1 g
100 g
16
Water dissolves which of the following with certainty?
Gases
Nonpolar Substances
None of the Above
Ionic Compounds
17
Which of the following elements can have three bond sites?
Sulphur
Arsenic
Boron
Antimony
18
P
x
O
y
is a covalent compound with no charge. The ratio of x:y is
2:1
1:2
3:2
2:3
19
Warm Up: What is the atomic number of Molybdenum
61
55
42
12
20
What is the theory that allows us to determine the molecular structure of compounds called?
VESPEN theory
VSEPR theory
MSER theory
MCPAR theory
21
What is the molar mass of Na
2
CrO
4
?
162 mol/g
162 g/mol
139 mol/g
139 g/mol
22
In which of these molecules is Oxygen the central atom?
CrO4
H2O
CO
CO2
23
Hydrogen Gas has which type of polarity?
Polar Bonds, Nonpolar Molecule
Nonpolar Bonds, Polar Molecule
Nonpolar Bonds, Nonpolar Molecule
Polar Bonds, Polar Molecule
24
Covalent compound PF
x
is not charged. The value of x can be
3
1
2
4
25
Warm Up: Which element has an atomic number of 10
Fluorine
Sodium
Oxygen
Neon
26
C(s) + 2H
2
(g) → CH
4
(g) is which type of reaction?
Decomposition
None of the Above
Formation
Redox
27
Given the equation below, what mass of H
2
O will form if 15 g of HCl is neutralized?
43.8 g
9.3 g
44.0 g
7.4 g
28
C2H4+Cl2=C2H4Cl2 is which type of reaction?
Half-Reaction
Redox
Synthesis
Formation
29
True or false : Lone pairs are considered electron pairs and can influence molecular structure
True
False
30
What molecular structure corresponds with 4 electron pairs repelling each other?
Cube
Cross
Tetrahedron
Trigonal-Planar
