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Chemistry Final Review
Chemistry Final Review
60 terms
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The final Quiz! review before we take the final exam.
Flashcards
60 cards
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Questions
60
Answers
1
Finish the definition: "An
isotope
is an atom that has the _________________"
Normal amount of neutrons and a different amount of protons
Different amount of both protons and neutrons
Normal amount of protons and a different amount of neutrons
Normal amount of protons and a different amount of electrons
2
When talking about substances, what is a
chemical change
?
A change to a substance that is visible to the naked eye
A change to a substance that changes it's identity
A change to a substance that isn't visible to the naked eye
A change to a substance that doesn't change it's identity
3
How would you
calculate the atomic mass
of an element?
atomic mass = mass isotope 1 * mass isotope 2 + etc.
atomic mass = (% isotope 1 / mass isotope 1) + (etc.)
Look at the periodic table
atomic mass = (% isotope 1 * mass isotope 1) + (etc.)
4
Is this the correct
lewis structure
for the following compound?
Both, this is correct and incorrect
Neither, this is a paradox
No, this is incorrect
Yes, this is correct
5
Write the
name
for the following compound:
Mononitrogen trihydride
Nitrogen trihydride
Nitrogen hydride
Ammonia
6
BONUS
: What is this piece of lab equipment?
Watch Plate
Evaporating Flask
Spot Plate
Evaporating Dish
7
Write the
formula
for the following compound:
(SnF)4
Sn4F
Sn4F4
SnF4
8
What happens during
positron decay
?
A neutron turns into a positron and is emitted
A positive electron is emitted from the nucleus
A highspeed electron is emitted from the nucleus
A highspeed positron is emitted from the nucleus
9
What is the second step of drawing a
lewis structure
?
Satisfy the octets of the atoms by distributing valence e-
Determine the total value of valence electrons
Use two valance electrons to form each bond in the structure
Write the skeleton structure of the molecule
10
How would you write 0.000000341 in
scientific notation
?
0.341 * 10-6
0.341 * 10-7
341 * 10-9
0.341 * 10-8
11
It takes the moon 29 days to orbit us.
How many times
would it have orbited us after 21 years?
246.3 times
236.4 times
264.3 times
263.4 times
12
Who discovered
electrons
?
Mr. Jones
J.J Thompson
Ernest Rutherford
Democritus
13
What are the
bond angles
for the following
MXE type
?
180o, 120o
180o
90o
109.5o
14
How would you find the number of
neutrons
in an atom?
atomic mass / # of electrons
atomic mass / # of protons
# of electrons - # of protons
atomic mass - # of protons
15
Look at the orbital energy level diagram below for nitrogen.
Why is it incorrect?
This diagram violates the Pauli Exclusion Principle
This diagram violates the Aufbau Principle
This diagram doesn't violate any of the rules
This diagram violates Hund's Rule
16
The equation for
density
is:
d = m/v
d = m+v
d = v/m
d = m*v
17
Looking at the picture below, what
type of bond
does this not represent?
Metallic
Polar covalent
Ionic
Non-polar covalent
18
What is a
molecule
?
A molecule is made of multiple substances
A molecule is multiple units of a mixture
A molecule is the smallest unit of a compound
A molecule is made of several small compounds
19
Write the
name
for the following compound:
Dioxygen
Oxygen
Oxygén
Dioxide
20
Looking at the picture below, what
type of bond
does this represent?
Non-polar covalent
Ionic
Metallic
Polar covalent
21
Write the
name
for the following compound:
Tetraphosphorus Pentasulfide
Tetraphosphorus hexasulfide
Tetrophosphorus Pentasulfide
Phosphorus Sulfide
22
The density of an unknown block is 0.835g/cm
3
. What would the
mass
of a 36cm
2
chunk be?
30.06g
36.00g
30.00g
30.059g
23
Classify the following as
physical
or
chemical
:
Chemical change
Physical change
24
Write the
formula
for the following compound:
C2N
C2N2
CN2
CN
25
Why do
elements bond
in the first place?
Elements bond in order to share electrons
Elements bond in order to get to know each other better
Elements bond in order to share valence electrons
Elements bond in order to follow the octet rule
26
(POLL)
Are you prepared for the chemistry final?
Yes, I studied and I'm hyped
Well, I'm nervous yet prepared
Well, I played this Kahoot so I should be fine
No, I "forgot" to study
27
Why do we use
dimensional analysis
in the first place?
We use it to solve numbers and convert units
We use it to make ourselves look cool
We use it to covert conversion factors to different ones
We use it to solve inproper conversion factors
28
How would you rewrite 0.0416 with
5 sig figs
using
significant figures
?
0.4160
0.041600
0.04160
0.41600
29
TRUE OR FALSE
: All zeros to the left of a non-zero digit are significant.
True
Both, it could be true and false
False
Neither, it's a paradox
30
What is an
inference?
An explanation for something you observe
Another way of talking about an observation
Something that can not change with new observations
The idea of observing something and collecting data
31
Look at the orbital energy level diagram below for sodium.
Why is it incorrect
?
This diagram doesn't violate any of the rules
This diagram violates the Pauli Exclusion Principle
This diagram violates Hund's Rule
This diagram violates the Aufbau Principle
32
Looking at the picture below, what
type of bond
does this represent?
Metallic
Ionic
Non-polar covalent
Polar covalent
33
Which of the following is
NOT
a type of
nuclear emission
?
Electron decay
Alpha decay
Electron capture
Positron decay
34
Who created the
conservation of mass
law?
Democritus
Einstein
Atoine Lavoisier
Ernest Rutherford
35
Which of the following is a
compound
?
Water
Juice
Iron
Shampoo
36
A sphere has a mass of 6.505
2
g and a volume of 18.63cm
3
. What is the
density
of the sphere?
2.28g/cm3
7.22g/cm3
2.27g/cm
2.27g/cm3
37
Which of the following would
Kool-Aid
be?
Element
Compound
Heterognous Mixture
Homognous Mixture
38
What are the
three main groups
of the periodic table?
Metalloids, nonmetals, halogens
Metals, nonmetals, halogens
Metals, halogens, metalloids
Metals, metalloids, nonmetals
39
How many
significant figures
does 805,000 have?
2, 3, or 4 sig figs
4, 5, or 6 sig figs
3 sig figs
3, 4, or 5 sig figs
40
What is the
atomic radius
?
Distance from the edge of the nucleus to outermost electron
Distance from the edge of the nucleus to inntermost electron
Distance from center of nucleus to innermost electron
Distance from center of nucleus to outermost electron
41
TRUE OR FALSE
: All zeros between non-zero digits are significant.
Neither, it's a paradox
False
True
Both, it could be true and false
42
When talking about substances, what is a
physical change
?
A change to a substance that is visible to the naked eye
A change to a substance that changes it's identity
A change to a substance that doesn't change it's identity
A change to a substance that isn't visible to the naked eye
43
How would you write 12,50000 in
scientific notation
?
0.125 * 105
0.125 * 103
0.125 * 106
0.125 * 104
44
Write the
formula
for the following compound:
H2O3
H3O
HO3
H3O2
45
What was used to discover the
electron
?
J.J Thompson
Cathode Ray Tube
Brownian Motion
Conservation Of Mass
46
Looking at the picture below, what
type of bond
does this represent?
Polar covalent
Non-polar covalent
Metallic
Ionic
47
What is the
electron configuration
of Copper?
1s22s22p83s23p64s23d9
1s22s22p63s23p64s23d104p3
1s22s22p63s23p64s24d9
1s22s22p63s23p64s23d9
48
Who discovered the atom?
John Dalton
Ernest Rutherford
Einstein
Democritus
49
Who created the first
modern periodic table
?
William Odling
Lothar Meyer
John Newlands
Dmitri Mendeleev
50
What aren't the
bond angles
for the following
MXE type
?
180o
90o
109.5o
180o, 120o
51
When talking about
quantum numbers
, what are the different
sublevels (in order)
?
f, d, p, s
s, p, d, f
s, p, f, d
s, d, f, p
52
How does
electronegativity
affect the bonds of componds?
Electronegativity doesn't affect any bonds at all
Electronegativity only affects the bonds of substances
Lower electronegativity means more attraction to electrons
Higher electronegativity means more attraction to electrons
53
Using the equation, how would you find the
# of half lives
it would take for a sample to decay?
n = ln(g0/gf) / -0.693
n = ln(gf/g0) / -0.693
n = ln(gf/g0) / -0.396
n = ln(g0/gf) / -0.396
54
How many kilometers are 8.34 millimeters?
0.0000834km
0.00000834km
0.000000834km
0.000834km
55
Write the
name
for the following compound:
Iron (II) chloride
Iron (II) dichloride
Iron dichloride
Iron (III) chloride
56
Which of the following would
Froot Loops Cereal
be?
Element
Heterognous Mixture
Compound
Homognous Mixture
57
Classify the following as
physical
or
chemical
:
Chemical change
Physical change
58
If a man walks 5627ft in a day, how many inches does he walk in 16 days?
(Dimensional analysis)
1,080,384in
1,080,843in
1,880,340in
1,348,080in
59
Write the
formula
for the following compound:
HPO4
HPO3
H2PO3
H2PO4
60
What is the main meaning of
Observation vs. Inference
?
What you see vs. what you know
What you think vs. what you see
What you believe vs. what you think
What you see vs. what you think
