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WorksheetsChemCom Final Review
Total questions: 140
Worksheet time: 7hrs 45mins
Name
Class
Date
1.
Identify whether the pH is acidic, basic or neutral.
pH=13
pH=13
a)
acidic
b)
basic
c)
neutral
2.
Identify whether the pH is acidic, basic or neutral.
pH=7
pH=7
a)
acidic
b)
basic
c)
neutral
3.
Identify whether the pH is acidic, basic or neutral.
pH=5
pH=5
a)
acidic
b)
basic
c)
neutral
4.
Hypoventilation causes an increase in the concentration of CO2 in your blood. This causes an increase in the blood's pH.
a)
True
b)
False
5.
Respiratory acidosis is when your blood's pH is between 7 and 7.35
a)
True
b)
False
6.
A dilute solution solution means a liquid was made weaker by adding water or another solvent to it.
a)
True
b)
False
7.
Indicators specifies the degree of acidity or basicity through characteristic color changes.
a)
True
b)
False
8.
Which is the most electronegative element?
a)
Francium
b)
Carbon
c)
Oxygen
d)
Fluorine
9.
Acids and bases react to produce salts and water.
a)
True
b)
False
10.
How much concentrated 12M hydrochloric acid is needed to prepare 500mL of a 2.0M solution?
a)
83.3mL
b)
3000mL
c)
20.83mL
d)
500mL
11.
Chromatography is used to separate the components of a liquid or gaseous mixture so that they may be identified or isolated.
a)
True
b)
False
12.
Polar molecules will dissolve in water.
a)
True
b)
False
13.
A supersaturated solution contains less dissolved solute for a given temperature and pressure.
a)
True
b)
False
14.
Which is muddy water an example of ?
a)
suspension
b)
colloid
c)
solvent
d)
solute
15.
Shaving cream is an example of which type of colloid?
a)
foam
b)
gel
c)
Sols
d)
Emulsions
16.
Attractive force between molecules that are different.
a)
cohesive force
b)
adhesive force
17.
A structure of porous rock, sand or gravel that holds water beneath the Earth's surface.
a)
solute
b)
solvent
c)
polarity
d)
aquifer
18.
What is medical condition you would need a physiological buffer for?
a)
common cold
b)
respiratory alkalosis
c)
concussion
d)
sinus infection
19.
CH3COOH is a __________________ acid.
a)
strong
b)
weak
20.
NaOH is a ________________ base.
a)
strong
b)
weak
21.
0.57g of NaCl was dissolved to make 0.50L of solution. What is the molarity of the solution?
a)
0.01M
b)
0.02M
c)
1.2M
d)
0.087L
22.
0.87g of NaOH was dissolved to make 0.250L of solution. What is the molarity of the solution?
a)
0.098M
b)
0.087M
c)
1.2M
d)
0.087L
23.
How much concentrated 18M sulfuric acid is needed to prepare 750mL of 9.0M solution?
a)
41.67mL
b)
43.00mL
c)
375.0mL
d)
1500mL
24.
How much concentrated 18M sulfuric acid is needed to prepare 250mL of 3.0M solution?
a)
41.67mL
b)
43.00mL
c)
23.01mL
d)
1500mL
25.
What is the hydroxide concentration of a solution with a pOH of 12.3?
a)
5.01x10-12
b)
5.01x10-11
c)
5.01x10-13
d)
3.02x10-1
26.
What is the hydrogen concentration of a solution with a pH of 1.7?
a)
0.02
b)
0.05
c)
0.07
d)
0.01
27.
What is the pOH of a solution with a hydroxide concentration of 2.3x10-5M?
a)
12.3
b)
1.22
c)
4.64
d)
3.00
28.
What is the pH of a solution with a hydronium concentration of 6.02x10-2M?
a)
3.44
b)
1.22
c)
1.98
d)
3.89
29.
Electronegativity determines the ___________________ of a molecule.
a)
solvent
b)
solute
c)
polarity
d)
bonding
30.
Which pH is basic?
a)
7
b)
2
c)
6
d)
8
31.
Which is the strongest intermolecular force?
a)
dispersion
b)
dipole-dipole
c)
ionic
d)
hydrogen bonds
32.
Which of the following is not an acid?
a)
HCl
b)
H2SO4
c)
KCl
d)
NaOH
33.
Nonpolar substances with dissolve in nonpolar solutions.
a)
True
b)
False
34.
A salad is a homogeneous mixture.
a)
True
b)
False
35.
Which of the following is considered a colloid
a)
shaving cream
b)
marshmallow
c)
jello
d)
All of them
36.
Strong acids and bases only partially dissociate.
a)
True
b)
False
37.
Surfactants are compounds that do not lower the surface tension of water.
a)
True
b)
False
38.
Surfactants are compounds that do not lower the surface tension of water.
a)
True
b)
False
39.
Polar molecules are hydrophobic.
a)
True
b)
False
40.
Decanting is spinning a mixture rapidly to push the more dense material outward.
a)
True
b)
False
41.
Increasing the temperature will increase the rate of solubility.
a)
True
b)
False
42.
A polar substance will dissolve in a nonpolar solution.
a)
True
b)
False
43.
Obsidian is an example of?
a)
a crystalline solid
b)
an unit cell
c)
an amorphous solid
d)
a liquid
44.
What is a unique property of solids?
a)
crystalline
b)
expansion
c)
fluidity
d)
high surface tension
45.
What is the solubility of NH3 at 10 degrees celsius?
a)
120g
b)
100g
c)
70g
d)
147g
46.
What is the solubility of KNO3 at 60 degrees celsius?
a)
120g
b)
100g
c)
70g
d)
147g
47.
What is the solubility of KNO3 at 60 degrees celsius?
a)
120g
b)
100g
c)
70g
d)
147g
48.
What is the solubility of KI at 10 degrees celsius?
a)
120g
b)
67g
c)
137g
d)
147g
49.
Which is not a property of an acid?
a)
bitter taste
b)
change the color of acid base indicators
c)
conduct electricity
d)
proton acceptor
50.
Which is a real life example of an acid?
a)
milk of magnesia
b)
toothpaste
c)
milk
d)
bleach
51.
Which is a real life example of an acid?
a)
milk of magnesia
b)
toothpaste
c)
milk
d)
bleach
52.
What is a real life example of capillary action?
a)
paper towels
b)
fog
c)
ammonia
d)
amorphous solid
53.
The weakest intermolecular force is?
a)
dipole-dipole
b)
dispersion
c)
hydrogen bonds
d)
ionic
54.
Identify the following as a chemical or physical property: blue in color
a)
chemical
b)
physical
55.
Identify the following as a chemical or physical property: reacts with water
a)
chemical
b)
physical
56.
Identify the following as a chemical or physical property: sugar dissolves in water
a)
chemical
b)
physical
57.
Identify the following as a chemical or physical property: sugar dissolves in water
a)
chemical
b)
physical
58.
Identify the following as a chemical or physical property: gold does not rust or corrode like many other metals.
a)
chemical
b)
physical
59.
Identify the following as a chemical or physical change: Water is boiled in preparation for making pasta.
a)
chemical
b)
physical
60.
Identify the following as a chemical or physical change: you cook a hamburger
a)
chemical
b)
physical
61.
Identify the following as a chemical or physical change: the metal in an automobile exposed to salt and water slowly crumble into tiny pieces.
a)
chemical
b)
physical
62.
What is the group number for the halogens?
a)
1
b)
3
c)
17
d)
18
63.
Nobel gases are extremely reactive and unstable.
a)
True
b)
False
64.
Groups are the horizontal rows on the periodic table.
a)
True
b)
False
65.
Electrons are found outside of the nucleus.
a)
True
b)
False
66.
Alkali metals are the most reactive.
a)
True
b)
False
67.
Henry Moseley came up with the first periodic table.
a)
True
b)
False
68.
Which is the correct name for Fe2O3?
a)
Iron (II) oxide
b)
Iron (III) oxide
c)
Iron (II) hydroxide
d)
Iron (III) hydroxide
69.
Which is the correct name for SiO2?
a)
silicon oxide
b)
silicon trioxide
c)
silicon dioxide
d)
disilicon oxide
70.
Identify the type of reaction:
C3H8 + O2 --> CO2 + H2O
C3H8 + O2 --> CO2 + H2O
a)
synthesis
b)
decomposition
c)
combustion
d)
single replacement
71.
Identify the type of reaction:
NaCl + HBr --> NaBr + HCl
NaCl + HBr --> NaBr + HCl
a)
synthesis
b)
decomposition
c)
double replacement
d)
single replacement
72.
Identify the type of reaction:
NaCl + H2 --> Na + HCl
NaCl + H2 --> Na + HCl
a)
synthesis
b)
decomposition
c)
double replacement
d)
single replacement
73.
Identify the type of reaction:
Mg + O2 --> MgO
Mg + O2 --> MgO
a)
synthesis
b)
decomposition
c)
double replacement
d)
single replacement
74.
Identify the type of reaction:
Fe2O3 --> Fe + O2
Fe2O3 --> Fe + O2
a)
synthesis
b)
decomposition
c)
double replacement
d)
single replacement
75.
Luster describes a __________________________ property.
a)
chemical
b)
matter
c)
physical
d)
compound
76.
What is the correct formula for sodium chloride?
a)
NaCl
b)
Na2Cl
c)
SCl
d)
SC
77.
Which is the correct formula for sulfur hexafluoride?
a)
SF7
b)
SF3
c)
SF6
d)
SF
78.
What is carbon's atomic number?
a)
3
b)
4
c)
5
d)
6
79.
An isotope has a different number of ___________.
a)
protons
b)
neutrons
c)
electrons
d)
cations
80.
Which groups consist of the transition metals?
a)
1-2
b)
3-12
c)
13-18
d)
14-16
81.
Identify the following as a chemical or physical change: You mix cake batter then bake it in the oven.
a)
physical
b)
chemical
c)
both
82.
Protons and neutrons are found outside of the nucleus.
a)
true
b)
false
83.
Who created the first periodic table?
a)
J.J Thomson
b)
Neils Bohr
c)
Dmitri Mendeleev
d)
Henry Moseley
84.
What it the charge of Iron (II)?
a)
+2
b)
+3
c)
-2
d)
-3
85.
What is the charge of oxygen?
a)
-2
b)
-1
c)
+2
d)
+1
86.
What is the charge of hydroxide?
a)
-1
b)
-2
c)
+1
d)
+2
87.
What is the charge of phosphate?
a)
-1
b)
-2
c)
-3
d)
0
88.
Which of the following is a physical property?
a)
flammability
b)
corrosive
c)
malleable
d)
reacts with air
89.
All elements are made of atoms.
a)
true
b)
false
90.
Neils Bohr discovered electrons.
a)
true
b)
false
91.
Many alkaline earth metals are found in fireworks.
a)
true
b)
false
92.
An elements atomic mass is equal to the protons plus the ______________________.
a)
electrons
b)
neutrons
c)
atomic number
d)
cation
93.
Atomic size decreases down a group and increases left to right in a period.
a)
true
b)
false
94.
Which is the symbol for calcium?
a)
C
b)
Ca
c)
Co
d)
Cu
95.
Which is the symbol for Sodium?
a)
S
b)
So
c)
N
d)
Na
96.
Which of the following is a nonmetal?
a)
Iron
b)
Oxygen
c)
Sodium
d)
Titanium
97.
Electronegativity is the ability to pull electrons.
a)
true
b)
false
98.
Franicum is the most electronegative element.
a)
true
b)
false
99.
How many molecules are in 0.54 moles of CO2?
a)
3.25 x 1023
b)
3.25
c)
6.02 x 1023
d)
6.02
100.
What is the molar mass of Fe?
a)
26 g/mole
b)
55.85 g/mole
c)
56 g/mole
d)
6.02 x 1023 g/mole
101.
What do we call the SI unit for amount of a substance?
a)
Avogadros number
b)
kilogram
c)
mole
d)
liter
102.
The number 6.02 x 1023 is called...
a)
Obama's number
b)
Bohr's number
c)
Trump's number
d)
Avogadro's number
103.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
104.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
105.
Where do you look to calculate the molar mass?
a)
avogadro's number
b)
periodic table
106.
How many particles are in a mole?
a)
602
b)
602 million
c)
602 moles
d)
6.02 x 1023
107.
How many grams are in 1.5 moles of Fe?
a)
55.847 g
b)
83.77 g
c)
83.77 mol
d)
55.847 mol
108.
You have 3.5 L of H2 (g) at STP. How many moles of gas are there?
a)
22.4 mol
b)
22.4 L
c)
0.16 mol
d)
0.16 L
109.
How many atoms are in 3.34 grams of Cu?
a)
3.16 x 1022 atoms
b)
3.16 x 1022 mol
c)
3.16 x 1022 L
d)
3.16 x 1022 g
110.
Cu(NO3)2 : How many atoms of oxygen?
a)
3
b)
2
c)
6
d)
5
111.
__________________________ are used to find the mole ratio.
a)
atoms
b)
coefficients
c)
theoretical yield
d)
molar mass
112.
One mole of any gas at STP has a volume of....
a)
32.4L
b)
22.4L
c)
6.02x1023L
d)
44.8L
113.
How many atoms of oxygen are in Cu2(SO4)3?
a)
4
b)
7
c)
12
d)
0
114.
The law of conservation of mass states matter is neither created nor destroyed. The amount of products must equal the amount of the reactants.
a)
True
b)
False
115.
What is the molar mass of MgO?
a)
24.305 g/mol
b)
40.305 g/mol
c)
16.00 g/mol
d)
56.305 g/mol
116.
Standard temperature and pressure is zero degrees celsius and one atmosphere.
a)
True
b)
False
117.
22.4L is Avogadro's number.
a)
True
b)
False
118.
STP stands for standard temperature and pressure.
a)
True
b)
False
119.
What is the molar mass of the element calcium?
a)
1.55g
b)
20.01g
c)
40.08g
d)
2.02g
120.
24.31 grams of magnesium is 1 ___________ of magnesium.
a)
molecule
b)
liter
c)
atom
d)
mole
121.
Equations must be balanced in order to make them obey the law of conservation of mass (matter).
a)
True
b)
False
122.
Which of the following is not a natural polymer?
a)
cellulose
b)
plastic
c)
silk
d)
cotton
123.
Alkenes have a _____________________ bond.
a)
Single
b)
Double
c)
Triple
d)
None
124.
Which of the following is the most reactive?
a)
Alkanes
b)
Alkenes
c)
Alkynes
d)
None
125.
Which alkane will have the lowest boiling point?
a)
C6H14
b)
C10H22
c)
C4H10
d)
C9H20
126.
Name the alkane:
C-C-C-C-C-C-C
C-C-C-C-C-C-C
a)
hexane
b)
heptane
c)
octane
d)
pentane
127.
Which is not a fossil fuel?
a)
Natural gas
b)
Coal
c)
Crude oil
d)
Water
128.
Hydrocarbons and polymers are the focus of the branch of chemistry known as organic chemistry.
a)
True
b)
False
129.
Cycloalkanes are unsaturated hydrocarbons.
a)
True
b)
False
130.
Which is a fuel obtained by crude oil?
a)
Diesel
b)
Kerosene
c)
Gasoline
d)
All are obtained from crude oil
131.
Using a bicycle will increase or decrease your carbon footprint?
a)
Increase
b)
Decrease
132.
Taking a trip by train will increase or decrease your carbon footprint?
a)
increase
b)
decrease
133.
What is the most common source of the hydrogen gas used in fuel cells?
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
134.
How did the term aromatic compounds originate?
a)
taste
b)
smell
c)
sound
d)
color
135.
Increasing the number of hydrocarbons on a straight chain will increase a fuel's octane rating.
a)
True
b)
False
136.
Which factor would help you decide which hydrocarbon fuel to use?
a)
Melting point
b)
density
c)
mass
d)
Boiling point
137.
What are the emission products of a fuel-cell powered vehicle?
a)
methane
b)
carbon
c)
water
d)
oil
138.
What is the general molecular formula for an alkane containing 6 carbons?
a)
C6H12
b)
C6H10
c)
C6H14
d)
C6H6
139.
Isomers have the same molecular formula and the same structure.
a)
True
b)
False
140.
Polymers have 1-200 or more repeating units of monomers
a)
True
b)
False
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