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Chemistry Exam Review 2021 Flashcards | StudBud
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Chemistry Exam Review 2021
Chemistry Exam Review 2021
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Chemistry Exam Review
Flashcards
70 cards
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Practice quiz
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Questions
70
Answers
1
Which statement is NOT TRUE about VALENCE ELECTRONS?
Nonmetals can only lose these electrons when bonding
You can often group number on the table to determine the number of these
These are the electrons involved in bonding
They are located in the outer energy level
2
You record some data: 1.02g 1.03g 1.02g. THE ACTUAL MASS is 1.45g. Your data is precise but not accurate.
True
False
3
Wave Label: What is #1?
Trough
Wavelength
Crest
Amplitude
4
A catalyst is a substance that speeds up the rate of a chemical reaction without itself being used up in the reaction.
True
False
5
How many atoms make up this compound: Ca(NO
3
)
2
8
3
9
10
6
If a balloon at 20. deg Celsius has a volume of 1.0 L, what will its volume be if put in -5.0 deg C freezer?
0.91 L
1.09 L
-.25L
7
What is the name of the group of elements that show some metallic traits and also some nonmetallic traits?
Metalloids
Transition metals
Actinide series
Lanthanide series
8
What is the molar mass of Calcium Hydroxide Ca(OH)
2
74.09 g/mol
57.09 g/mol
114.09 g/mol
58.09 g/mol
9
0 degrees celsius and 1 ATM
Mr. Beatty's classroom
Hurricane conditions
Standard Temperature and Pressure
Standard Temperature and Volume
10
Which rule states that electrons occupying the same orbital must have opposite spin?
AUFBAU rule
Hund's rule
Pauli exclusion principle
11
Joe measures a block to be 5.0 cm, but it is really 4.0 cm. What is Joe's percent error?
75%
20%
25%
50%
12
Name the element that has 1 electron in the 4s orbital.
Scandium
Boron
Potassium
Hydrogen
13
A bond between an alkali metal and a halogen would most likely be a ___ bond.
James
Hydrogen
Covalent
Ionic
14
H
2
+ O
2
--> H
2
O - Choose the correct sequence of COEFFICIENTS below to balance the equation.
1,2,1
2,2,1
1,1,1
2,1,2
15
Which is NOT an INTERMOLECULAR force:
Dipole-Dipole bonds
Dispersion Forces
Covalent bonds
Hydrogen bonds
16
The molar mass of Carbon is 12.011 g/mol
False
True
17
Water is "sticky" because:
of strong ionic forces
it is a nonpolar covalent bond
of its polarity
18
Where on this periodic table would you find the elements MOST wanting to GIVE UP/LOSE electrons in ionic bonds?
The Noble Gases
In group 1 - alkali metals
The Transition Metals
Group 17 - the Halogens
19
Wave Label: What is #4?
Amplitude
Trough
Crest
Wavelength
20
Where on this periodic table would you expect to find the element with the LARGEST ATOMIC RADIUS?
At the bottom of the Halogens
At the bottom of the Noble Gases
At the top of the Halogens
At the bottom of the Alkali Metals
21
Wave Label: What is #2?
Crest
Amplitude
Wavelength
Trough
22
Wave Label: What is #3?
Crest
Wavelength
Amplitude
Trough
23
Type of reaction
Decomposition
Single Replacement
Synthesis
Double Replacement
24
Which has a LOWER MELTING POINT
Substances with IONIC bonds
Substances with COVALENT bonds
25
Which scientist: Plum Pudding Model
E. Rutherford
J. Dalton
N. Bohr
J.J. Thomson
26
Which Scientist: Shot gold foil with alpha particles
J.J. Thomson
J. Dalton
E. Rutherford
N. Bohr
27
Lithium is an alkaline earth metal.
True
False
28
How many NEUTRONS are in the radioactive isotope Carbon-14?
14
6
8
7
29
Which of the choices has the greatest ENERGY?
Ultraviolet
Visible light
X-Ray
Radio
30
In this reaction, what does the (aq) stand for?
Gas
Solid
Soluble in water
Liquid
31
The valence electrons in this kind of bond are free to move from cation to cation - hence, good conductor of electricity
Metallic bond
Polar Covalent bond
Ionic bond
Nonpolar Covalent bond
32
Which choice correctly lists the substances in order from HIGHEST to LOWEST pH?
Soap - lemon juice - coffee
HCl - water - bleach
Soap - water - lemon juice
Water - lemon juice - oven cleaner
33
Type of Reaction?
Synthesis
Double Replacement
Single Replacement
Decomposition
34
What is the WAVELENGTH of an electromagneic wave traveling with a frequency of 3.2 X 10
16
hertz?
1.1 X 107 meters
9.4 X 10-9 meters
9.6 X 1024 meters
35
Which is the WEAKEST of the intermolecular forces?
Dispersion
Dipole-Dipole
Hydrogen Bonds
36
The smallest particle of an element that is still that element is:
an electron
an atom
a neutron
a proton
37
Acids have a ______ H
+
concentration than OH
-
concentration
HIgher
Lower
38
Where are the METALS located on the periodic table?
The LEFT side
The TOP half
The BOTTOM half
The RIGHT side
39
Balance this equation, then tell the MOLE RATIO of Magnesium Hydroxide to water. Mg(OH)
2
+ HCl --> MgCl
2
+ H
2
O
2:1 ratio
1:2 ratio
2:2 ratio
1:1 ratio
40
How many PROTONS are in the radioactive isotope Carbon-14?
8
6
7
14
41
Which of these common object's shapes would most closely resemble an s-orbital?
a dumbbell
a pool noodle
a daisy flower
a basketball
42
If you took a rocket to the Moon and took your chemistry book with you, your book would have less mass on the Moon.
False
True
43
If two non-metals are very close to each other on the periodic table, they may more likely have a ___ bond
Ionic
Polar Covalent
Nonpolar Covalent
Metallic
44
H
2
+ O
2
--> H
2
O - Which statement below is correct?
The product is supposed to be H2O2
H2O is the reactant
The equation is balanced
H2 and O2 are the reactants
45
A rule that describes events in nature -- essentially scientific fact
scientific anomaly
scientific theory
scientific hypothesis
scientific law
46
Where would you have the LEAST weight?
On the International Space Station (ISS)
On Mars
On the Moon
On the equator
47
Where on this periodic table would you expect to find the element with the HIGHEST electronegativity?
In the Noble Gases
At the top of the Halogens
At the bottom of the Alkali Metals
At the bottom of the Halogens
48
The alkaline earth metals are:
always +1
nonreactive
in group 2
anions
49
Select the PAIR in which the word on the LEFT has a HIGHER FREQUENCY than the word on the right:
Radio wave : Microwave
X-Ray : Gamma Ray
Ultraviolet : Infrared
Red light : Violet light
50
The oxidation number of elements in group 17 is -2 because these form -2 anions
False
True
51
1s
2
2s
2
2p
5
Neon
Nitrogen
Oxygen
Fluorine
52
Which wave has a LOWER FREQUENCY?
Wave B
Wave A
Cannot tell from image
53
Which Scientist: Electrons travel in orbits with distinct sizes and energies
E. Rutherford
J.J. Thomson
Schrodinger
N. Bohr
54
Boyle's Law is the relationship between:
Temperature and Volume
Pressure and Temperature
Pressure, Temperature, Volume, and moles
Pressure and Volume
55
What type of reaction?
Double Replacement
Synthesis
Single Replacement
Decomposition
56
If you have 100 grams of C-14, (half life of about 5,700 years), how many years when only 25 grams remain?
22,800 years
28,500 years
11,400 years
17,100 years
57
Which is true about NEUTRAL atoms of an element?
Neutrons always equal electrons
Protons always equal electrons
Protons always equal neutrons
Atoms are never neutral
58
How many ELECTRONS are in the radioactive isotope Carbon-14?
8
6
7
14
59
Which is NOT a good conductor of electricity in solution?
A solution with IONIC compounds
A solution with COVALENT compounds
60
If a balloon with a volume of 4.0 Liters is taken from a pressure of 1.0 atm to 2.0 atm, the volume will be:
8.0 L
4.0 L
2.0 L
1.0 L
61
Name the element with an electon configuration [Ar] 4s
2
3d
6
Rubidium
Iron
Selenium
Sulfur
62
Which has a FREQUENCY from less than 1000 to over 3000 Hz?
Radio
Red light
Ultraviolet
X-Ray
63
The alkali metals form +1 cations and have an oxidation number of +1
True
False
64
The difference between a solution and a suspension is:
Suspensions will more likely settle out or be filtered
solutions have larger particles
Particles fully dissociate in a suspension
65
10. degrees Celsius is 263 K
False
True
66
Which rule states that every orbital in a subshell gets an electron before any orbital gets a second electron?
Pauli exclusion Principle
Hund's Rule
AUFBAU rule
67
If both waves were electromagnetic waves, which of the waves would have a HIGHER ENERGY??
Wave B
Wave A
Cannot tell from image
68
Charles' Law is the relationship between:
Pressure and Temperature
Temperature and Volume
Pressure, Temperature, Volume, and moles
Pressure and Volume
69
What is the CHARGE of a phosphorus ION?
+3
-3
-2
+/-4
70
What type of orbital?
d
f
p
s
