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Chemistry Final Review Sheet
Chemistry Final Review Sheet
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1
Which of the following is a type of qualitative data?
length
Temperature
Color
Mass
2
The symbol → in an equation means _____.
Escapes
Gets hotter
Combines
Yields
3
Calculate the mass of 2.50 moles of MgSO4. (molar mass of MgSO4 = 120.38 g
597 g MgSO4
48 g MgSO4
301 g MgSO4
0.0208 g MgSO4
4
Matter is anything that takes up space and has mass.
False
True
5
The disappearance of dry ice left out in a dish is an example of _____.
Sublimation
Condensation
Evaporation
Deposition
6
Which of the following subatomic particles has the least mass?
Electron
Nucleon
Proton
Neutron
7
An idea assumed to be true without proof is
A presupposition
Faith
A worldview
A theory
8
How many significant digits are in 4800 cm?
4
3
1
2
9
The _____ states that it is impossible to know both the energy and the exact position of an electron at the same time.
Aufbau principle
Law of definite composition
Pauli Exclusion principle
Heisenberg uncertainty principle
10
Helium, neon, argon, krypton, xenon, and radon are all _____.
Halogens
Metalloids
Metals
Nobel Gases
11
When water vapor forms dew on the grass, ___ has occurred.
Evaporation
Condensation
Vaporization
Sublimation
12
What is the isotopic notation for an atom that has 33 protons, 42 neutrons, and 33 electrons?
42/33
33/42 X
75/33 X
75/42 X
13
The official definition of Avogadro's number is based on the number of atoms in exactly 12 g of _____.
Carbon - 12
Nitrogen - 14
Oxygen - 16
Hydrogen - 1
14
The measure of an atom's ability to attract electrons to itself in a chemical bond is called _____.
Polarity
Electron affinity
Ionization energy
Electronegativity
15
The scientific method, when used properly, can lead a person to determine absolute truth.
True
False
16
A dash in a Lewis structure represents _____ electron(s).
2
Unpaired
1
4
17
The reaction TiCl4 + 4Na → Ti + 4NaCl is a _____ reaction.
Single replacements
Double replacement
18
The reaction 2NaCl + H2SO4 → Na2SO4 + 2HCl is a _____ reaction.
Decomposition
Composition reaction
Double replacement reaction
Synthesis reaction
19
A(n) _____ system is any system of measurement based on a decimal scale.
Basic
Metric
Digital
Accurate
20
A Christian chemist who believes the Bible has a worldview that affects his work.
False
True
21
What is the correct way to abbreviate milliliter?
mL
ml
Ml
ML
22
Which of the following is the correct value for Avogadro's number?
6.22 x 10 to the 23 power
6.23 x 10 to the 22 power
6.022 x 10 to the 23 power
6.023 x 10 to the 22 power
23
An orderly arrangement of ions in a three-dimensional pattern within a compound is called a(n) _____ .
Ion array
Crystal lattice
Formula unit
Ionic Network
24
Which principal energy level has both s and p sublevels but no others?
First
Fourth
Third
Second
25
How many hydrogen atoms are in the chemical formula 2H2O?
2
1
4
3
26
Lithium is in group 1 of the periodic table and fluorine is in group 17. Which has the greater electronegativity
Fluorine
Lithium
27
If an atom loses an electron, the atom will have a ___ charge.
Periodic
Neutral
Negative
Positive
28
The mass of a crystal as measured on a balance would be an example of _____ data
Qualitative
Deductive
Quantitive
Subjective
29
An atom becomes more stable by bonding with another atom if the resulting electron configuration is more like that of
Halogens
Metalloids
Noble gases
Alkali metals
30
The amount of matter packed into a given volume determines its _____.
Color
Mass
Density
Ductility
31
Neil Bohr proposed concept of principle energy levels, he envisioned a set of circular tracks on which _____ orbited
Protons
Isotope
Electron
Sub levels
32
The temperature outside is 87 °F. What is the temperature in degrees Celsius?
31 C
35 C
42 C
47 C
33
The _____ represent the number of moles of each substance in a reaction.
Coefficients
Super script
Sublevel
Sub script
34
The reaction 4Fe + 3O2 → 2Fe2O3 is a _____ reaction.
Double replacement
Decomposition
Composition
Synthesis
35
An anion composed of oxygen and one other element is called a(n) _____.
Anion and oxygen
Ion
Oxide
Oxyanion
36
Electron-dot notation is used to represent the _____ electrons in an atom.
Ion
Measure
Electron
Valence
37
In a chemical reaction, the _____ is used up before the others, preventing more products from forming.
Excess product
Excess reactants
Limiting product
Limiting reactant
38
In the chemical formula 10Al(C
2
H
3
O
2
)
3
, the numeral 10 is a _____ .
Multiplier
Subscript
Superscript
Coefficient
39
Perform the following operation, observing significant digits: 7.491 m + 60.2 m + 1.00224 m.
68.6
68.69324
68.7
69
40
Mathematically, a conversion factor is equal to zero.
True
False
41
The Greek prefix penta- means _____.
4
6
5
3
42
Which state of matter exists in a lit neon sign?
Gas
Liquid
Plasma
Quark-gluon plasma
43
These elements are good conductors of heat and electricity and are usually hard, lustrous, malleable, and ductile.
Alkaline earth metals
Metals
Hydrogen
Transition metals
44
Net ionic equation
Add the coefficient
Take away the coefficient
Leave out the spectator ion
Keep the spectator ion
45
How many atoms of oxygen are present in 2Al2(SO4)3?
24
8
14
12
46
Where can you find the information needed to change grams of a substance to moles?
Oxidation number
Periodic table
Coefficient
Electronegativity values
47
Measure products of chemical reaction 3 times to get 1.56g,1.59g, and 1.60g. It is actually 3.62g. Your measurements are
Neither accurate nor precise
Both accurate and precise
Accurate but not precise
Precise but not accurate
48
Units of measurement that come from basic SI units are called _____ units.
Metric
American
Derived
Simple
49
If an atom has a full s and a full p sublevel in its first energy level, how many electrons does it have?
3
2
8
10
50
What is the chemical formula for carbon disulfide?
CS3
C2S
CS2
2CS
51
Hydrogen peroxide (H2O2) is a _____ .
Polyatomic element
Compound
Diatomic element
Homogeneous mixture
52
A theory explains scientific observations.
False
True
53
It is improper to multiply two measurements that have different units.
False
True
54
The nucleus contains almost all of the mass in an atom.
False
True
55
A negatively charged ion is called a(n) _____.
Anion
Electron
Charge
Negative ion
56
Mendeleev's periodic table arranged elements by _____ .
Atomic number
Number of neutrons
Atomic mass
Electronegativity
57
Choose the name for the chemical formula HCl (aq).
Hydrochloric acid
Hydrogen acid
Hydrogen Chlorine Acid
Hydrolic Chloride
58
Compounds consisting of one metal and one nonmetal are called _____.
Binary ionic compounds
Ionic compound
Binary compound
Complementary compound
59
Dry ice has a temperature of 196 K. What is the temperature of dry ice on the Celsius scale?
-77 C
-92 C
-71 C
-95 C
60
In measurement, only like units can be added or subtracted.
False
True
61
What type of bond forms as a result of orbitals overlapping end to end?
Gamma
Pi
Sigma
Delta
62
Chemistry is the study of _____ and the changes that it undergoes.
Atoms
Elements
Crackers
Matter
63
What is the Lewis structure for ammonia, NH3?
H - N = H - H
H - N = H - H with 2 dots over the N
H - N - H - H
H - N - H - H with 2 dots over the N
64
The type of sublevel found in all principal energy levels is the _____ sublevel.
d
p
s
f
65
What is the angle of the bonds in a pure tetrahedral arrangement?
180 degrees
120 degrees
360 degrees
109.5 degrees
66
Which of the following does not represent a function of a balanced equation
Who cares
Shows the mass of products and reactants
Reveals everything
Indicates the mass of products and reactants
67
The sum of the number of neutrons and the number of protons is known as the _____.
Mass number
Atomic mass
Atomic number
Atomic mass unit
68
Significant digits apply only to _____ data.
Measured
Rounded
Accurate
Precise
69
Chemical bonds between atoms involve the rearrangement of _____ to maximize stability.
Neutrons
Electrons
Neutrinos
Protons
70
All of matter can be divided into two categories, pure substances and _____.
Suspensions
Mixtures
Compounds
Impure Substances
71
Who were the first people to propose that matter was made of atoms?
Egyptians
Greeks
Sumerians
Europeans
72
What is the oxidation number of atoms in pure elements?
+1
+2
0
-1
73
What type of bond would you expect to form between nitrogen and potassium?
Polar covalent bond
Covalent bond
Ionic bond
Metallic bond
74
A naturalistic worldview teaches that matter is all that exists.
True
False
75
All _____ digits are considered significant in a measurement.
All negatives
All zeros
All positives
Nonzero
76
Copper, nickel, zinc, platinum, mercury, calcium, and potassium are all examples of _____.
Nonmetals
Metals
Halogens
Metalloids
77
Which one of these is not an element symbol?
Cu
Ca
CN
C
78
The reaction 2AlCl3 → 2Al + 3Cl2 is a _____ reaction.
Double replacement reaction
Composition reaction
Decomposition reaction
Synthesis reaction
79
This element consists of 21% of earths atmosphere and is abundant in earths crust. Essential for all humans and animals
Oxygen
Carbon
Iron
Helium
80
One mole of water contains _____ of hydrogen atoms and _____ of oxygen atoms.
Two moles / one mole
One mole / one mole
One mole / two moles
Two moles / two moles
81
Two different isotopes of a single element would have the same number of ___ but a different number of ___.
Electrons/Protons
Protons/ions
Protons/neutrons
Neutrons/protons
82
What do we call the attraction between opposite electrical charges?
Electron sharing
Electrostatic force
Electrical affinity
Electric force
83
What is the only metal that is a liquid at room temperature?
Magnesium
Mercury
Lithium
Barium
84
A charged atom is called a(n) _____.
Isotope
Ion
Element
Mixture
85
Change 5.02 × 103 to decimal notation.
5020
50,200
502,000
502
86
Scientific models may be expressed as _____ .
All of these
Pictures
Mathematical formulas
Physical Representations
87
What is the name for the chemical formula N2S5 • 3H2O.
Dinitrogen
Dinitrogen pentasolfite trihydrate
Trihydrate dinitrate
Trihydrate pentasolfite
88
Scientists approach their work with a certain ____ , which is the perspective from which they see/interpret all of life
Model
Worldview
Reasoning
Hypothesis
89
When balancing a chemical equation, it is usually best to begin with the _____.
Products
Reactants
Most complicated molecule
Simplest molecule
90
The halogens form _____ when they combine with metals and _____ when they combine with hydrogen.
Metalloids /gases
Oxide/chlorates
Acids/salts
Salts/acids
91
Which type of formula typically takes the most time and space to draw?
Structural
Stoichiometric
Empirical
Molecular
92
A compound that contains water molecules in its crystalline structure is called a(n) _____.
Hydrate
Oxyanion
Anhydrate
Binary acids
93
Choose the correctly balanced equation from a list.
Long equation
Cr(OH)3 + 3HCIO4 ➡️ Cr(OH4)3 + 3H2O
Cr3 + 3HCIO4 ➡️ Cr(OH4)3 + 3H2O
Confusing
94
If the atoms below formed a covalent compound, which is most likely to be the central atom?
Carbon
Oxygen
Hydrogen
Nitrogen
95
The measurement 0.005 006 10 m has how many significant digits?
8
6
5
3
96
SO4–2 is an _____.
Ion
Element
Atom
Isotope
97
Why do elements in the same family have similar physical and chemical properties?
Similar electrical charge
Similar surface area
Similar electron configurations
Similar nuclear construction
98
If the bathroom mirror fogs up while you are in the shower, _____ has occurred.
Condensation
Evaporation
Sublimation
Deposition