What is a mole (in chemistry terms)?

A counting unit totaling 6.022 x 1023 items

Resin beads deteiorate and small pieces break off

Define chemical equilibrium?

When the rates of the forward and reverse reactions are the same

Long repeating chains of molecules

What is a super saturated solution?

A solution with more than the max amount of solute dissolved in it.

Matter can be defined as which of the following?

Anything that has mass and volume

How does temperature affect the rate of reaction?

Higher temperature = More energy = faster reaction

Which of the following is NOT a way to prevent corrosion?

Adding oxygen to the environment.

What is the difference of a molecular weight and gram molecular weight (gmw)?

Molecular weight has units of amu. GMW has units of gram/mole.

Which of the following describes metallic bonding?

Sharing of electrons in a sea of electrons

How does temperature affect the solubility of carbon dioxide gas in soda?

Increased temperature decreases the solubility

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Chemistry Final Quiz

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Questions 118

Answers

1
Atoms of different elements always have a different number of
Electrons
Neutrons
Morons
Protons
2
What happens to the reactants during in oxidation-reduction process during the reduction step?
Loss of protons
Gain of protons
Loss of electrons
Gain of electrons
3
"A measurement of the amount of solute in a given amount of solvent or solution" is the definition of
Concentration
Saturation
Dilution
Supersaturation
4
What is the "tiniest particle of matter that retains the characteristics of the element."
Compound
Element
Molecule
Atom
5
Which of the following is NOT a common filtration media?
Activated Charcoal
Diatomaceous Earth
Ion Exchange Resin
Filter paper
6
The most reactive non-metal on the periodic table (according to the trend) is
Helium
Hydrogen
Astatine
Fluorine
7
What is a mole (in chemistry terms)?
A counting unit totaling 6.022 x 1021 items
A counting unit totaling 6.022 x 1023 items
A counting unit totaling 6.022 x 1022 items
A counting unit totaling 6.022 x 1020 items
8
Which of the following would NOT increase the concentration of a solution?
Decrease the amount of solute
Stirring the solution
Increase the amount of solute
Decrease the amount of solvent
9
If an atom or molecule loses an electron it will become a(n) _______ and have a ________ charge.
Cation, positive
Anion, positive
Cation, negative
Anion, negative
10
Resin fines are when
Resin allows the water to flow too fast
Resin overheats
Resin beads deteiorate and small pieces break off
11
Which state phase change can be described as a gas becoming a liquid?
Condensation
Boiling
Sublimation
Evaporation
12
What is the concentration in ppb of a solution if 1.5 x 10² milligrams of solute is added to 1000 grams of solution?
1.5 ppm
150 ppm
1.5 x 108 ppb
150000 ppb
13
Define chemical equilibrium?
When you have the same amount of products and reactants
When all of the reactants are used up
When the reaction is finished reacting and nothing else occurs
When the rates of the forward and reverse reactions are the same
14
In the chemical notation below, what is the number of protons in this isotope?
28
30
65
35
15
What method CAN an ion exchanger use to remove suspended (undissolved) solids?
Deaeration
Ion Exchange
Filtration
16
Which of the following is described as "a substance that changes the rate of reaction but isn't consumed in it?"
catalyst
solvent
product
reactant
17
A pure substance can be defined as
A mixture
A Solution
A homogeneous sample of matter
A heterogeneous sample of matter
18
What is "metal undergoing a slow, relatively uniform deterioration and removal of metal?"
General Corrosion
Pitting Corrosion
Galvanic Corrosion
Crevice Corrosion
19
What is a polymer?
Long repeating chains of molecules
Large branched molecules
Small branched molecules
small, simple molecules shaped like spheres
20
Frying an egg: Chemical or Physical Change?
Chemical Change
Physical Change
21
Who stated "when a system at equilibrium experience a stress, the system will shift to relieve the stress?"
Albert Einstein
Henry LeChatelier
Marie Cure
Neils Bohr
22
"Chromium" represents what in the picture below?
Atomic Number
Element name
Average Atomic mass
Chemical Symbol
23
"24" represents what in the picture below?
Average Atomic mass
Chemical Symbol
Atomic Number
Element name
24
Melting ice cream: Chemical or Physical Change?
Physical Change
Chemical Change
25
If the conductivity of the influent is equal to that of the effluent, what is the likely cause?
Resin Exhaustion
Resin Channelling
Resin Fines
Resin Breakthrough
26
Calculate the molecular weight of the following compound.
17.01
33.006
164.93
18.02
27
What is a super saturated solution?
A solution with a lot of water in it
A solution with more than the max amount of solute dissolved in it.
A solution with less than the max amount of solute dissolved in it.
A solution with the max amount of solute dissolved in it.
28
Matter can be defined as which of the following?
Anything that has mass and volume
Anything that has mass and energy
Anything that has mass
Anything made of energy
29
What is defined as "the substance that does the dissolving?"
Solvent
Aqueous Solution
Solute
Mixture
30
In the chemical notation below, what is the number of electrons of this isotope?
28
65
35
30
31
In the chemical notation below, what is the number of neutrons of this isotope?
30
35
65
28
32
Which state phase change can be described as a liquid becoming a gas at temperature other than the boiling point?
Boiling
Melting
Freezing
Evaporation
33
How does temperature affect the rate of reaction?
Higher temperature = More energy = slower reaction
Higher temperature = More energy = faster reaction
Higher temperature = Less energy = faster reaction
Higher temperature = Less energy = slower reaction
34
What subatomic particle is represented at letter "A"?
Electron
Gluon
Proton
Neutron
35
Cutting bread: Chemical or Physical Change
Physical Change
Chemical Change
36
What type of resin would be used to decrease the pH of water?
Cation
Anion
Mixed bed
37
What is defined as "the substance that is dissolved into another substance?"
Atom
Molecule
Solute
Solution
38
Which of the following is NOT a way to prevent corrosion?
Increases water flow.
Adding oxygen to the environment.
Adding a sacrificial anode
Using metals that don't corrode.
39
What type of compounds produces OH^- ions when dissolved in water?
Compound
Base
Molecules
Acid
40
Using the periodic table, which element is more reactive Strontium (Sr) or Magnesium (mg)?
They are equally reactive
Strontium
Magnesium
The periodic table doesn't tell you this information
41
What is the process called when an acid and base are mixed to produce salt and water?
Ionization
Deacidification
Basification
Neutralization
42
Where does influent water enter the ion exchanger?
At the bottom
At the top
Its held in the beads
43
What unit of concentration is defined as the number of equivalents of a solute per liters of solution
Normality
Molality
PPM
Molarity
44
What is the difference of a molecular weight and gram molecular weight (gmw)?
Molecular weight has units of amu. Gram molecular weight has units of grams
There is no difference
Molecular weight has units of amu. GMW has units of gram/mole.
Molecular weight has units of grams. GMW has units of amu/mole.
45
What type of resin produces water with a slightly different pH than the influent water?
Cation
Mixed bed
Anion
46
What is the concentration in ppm of a solution if 53 grams of solute is added to 100 grams of solution?
0.053
530,000
53,000
0.53
47
Which of the following describes metallic bonding?
Transfer of electrons between metals
Transfer of electrons between metals and non-metals
Sharing of electrons between non-metals
Sharing of electrons in a sea of electrons
48
What refers to how easily a substance will or will not dissolve in something else?
Solute
Solubility
Mixture
Solvent
49
How does temperature affect the solubility of carbon dioxide gas in soda?
Gases are not soluble.
Increased temperature increases the solubility
Increased temperature decreases the solubility
50
What type of corrosion is defined as "two dissimilar metals in contact with each other in an electrolytic environment."
Pitting Corrosion
Galvanic Corrosion
Crevice Corrosion
General Corrosion
51
The _____ on the periodic table are called groups and the elements in these groups all have the same number of ________.
rows, valence electrons
columns, valence electrons
columns, energy levels
rows, energy levels
52
What type of compounds are produced when acids and bases are mixed?
Salt
Base
Acid
Molecules
53
How does the presence of a catalyst affect the rate of reaction?
catalyst decreases the activation energy making the reaction faster
catalyst increases activation energy making the reaction faster
catalysts are used up in the reaction and don't affect the rate
What do cats have to do with chemistry?
54
What subatomic particle is represented at letter "B"?
Electron
Gluon
Proton
Neutron
55
The _____ on the periodic table are called periods and the elements in these groups all have the same number of _______.
columns, energy levels
rows, energy levels
rows, valence electrons
columns, valence electrons
56
Which of the following describes ionic bonding?
Transfer of electrons between metals and non-metals
Transfer of electrons between metals
Sharing of electrons between non-metals
Sharing of electrons in a sea of electrons
57
What is a saturated solution?
A solution with a lot of water in it
A solution with less than the max amount of solute dissolved in it.
A solution with the max amount of solute dissolved in it.
A solution with more than the max amount of solute dissolved in it.
58
What term is defined as "the ability to create ions by either chemical or physical means?"
ioncreating
ionization
ionmaking
ion
59
Why are electrons in the valence shell considered "chemically active?"
They are stable
They are available to react with other atoms
They are hidden within the atom, but give the atom its identity
They can change to neutrons and release radiation
60
Atoms are made up of
Protons, neutrons, and ions
Protons, neutrons, and electrons
Protons, neutrons, and isotopes
solids, liquids, and gases
61
In the chemical notation below, what is the mass number of this isotope?
30
65
35
28
62
How does concentration of the reactants affect the rate of reaction?
Less atoms or molecules = faster reaction
The concentration of atoms or molecules doesn't affect the rate of reaction
More atoms or molecules = faster reaction
63
"A mixture whose composition and properties are not uniform but differ from point to point in the mixture" describes a
Homogeneous Mixture
Molecules
Solution
Heterogeneous Mixture
64
What is the process by which insoluble solids are removed by passing a solution through a filter?
Neutralization
Ion exchange
Deaeration
Filtration
65
Which of the following is NOT a reason to remove impurities from water?
Minimize radiation levels
Change the color
Minimize corrosion
Minimize fouling of heat sources
66
Burning a match: Chemical or Physical Change?
Physical Change
Chemical Change
67
1L of a 16 wt% solution is added to 40 liters of 82 wt% solution. What is the concentration of the new solution?
8200 %
80.39 %
803.9 %
52000 %
68
"51.996" represents what in the picture below?
Average Atomic mass
Chemical Symbol
Atomic Number
Element name
69
Using the periodic table, what is the atomic weight of Iron (Fe)?
9
26
55.845
18.998
70
What unit of concentration is defined as the number of moles of a solute per liters of solution
Molarity
Molality
Normality
PPM
71
Which of the following is a common phase of matter than has a fixed volume and a fixed shape?
Liquid
Solid
Plasma
Gas
72
What type of resin would be used to decrease the pH of water?
Mixed bed
Cation
Anion
73
Which state phase change can be described as a solid becoming a liquid?
Evaporation
Melting
Freezing
Boiling
74
The most reactive metal on the periodic table (according to the trend) is
They are equally reactive
Francium
Lithium
Polonium
75
What subatomic particle is represented at letter "C"?
Neutron
Proton
Electron
Gluon
76
Calculate the molecular weight of the following compound: (NH₄)₃PO₄
96.002
146.063
222.986
51.093
77
What is the purpose of retention screens in the ion exchanger?
Filter out insoluble solids
Keep the resin beads from escaping the exchanger
Regenerate the resin beads
Reduces the need for agitators
78
H₂O and H₂O₂ are examples that help explain which of the following Laws?
Law of Multiple Proportions
Law of Definite Proportions
Law of Conservation of matter
Law of Chemical Formulas
79
What can be described as "two or more pure substances that are physically combined in variable proportions."
Mixtures
Molecules
Atoms
Pure Substance
80
What region of the atom is represented at letter "E"?
Neutrino
Electron Cloud
Electron
Nucleus
81
How does the concentration of oxygen affect the rate of corrosion?
More oxygen, Less corrosion
Less oxygen, no corrosion
Less oxygen, more corrosion
More oxygen, more corrosion
82
Which state phase change can be described as a solid becoming a gas?
Condensation
Evaporation
Sublimation
Boiling
83
Cutting paper: Chemical or Physical Change?
Chemical Change
Physical Change
84
An isotope with a mass number of 24 and contains 13 neutrons is an isotope of what element?
Aluminum
Magnesium
Rubidium
Sodium
85
The outermost electrons in an atom are referred to as
valence electrons
it's protons in those shells
the outermost electrons
non-reactive electrons
86
How does surface area affect the rate of reaction?
More surface area = faster reaction
Less surface area = faster reaction
Surface area doesn't affect the rate of reaction
87
Which of the following is the purpose of an ion exchanger?
Filter out insoluble solids from water
Separate hydrogen and oxygen in the water molecule
Exchange wanted ions in solution with unwanted ions
Removed unwanted ions from solution and replace them with desired ions.
88
What is the atomic number of Scandium (Sc)?
87.62
44.956
38
21
89
A 25% sugar solution weighs 500 grams. How much sugar (solute) is in the solution?
130 g
500
13.0 g
25 g
90
What is the pH of a solution that has a hydrogen ion concentration of 4.0 x 10^-3
4.0
3.6
3.0
2.4
91
Which of the following describes covalent bonding?
Sharing of electrons in a sea of electrons
Transfer of electrons between metals and non-metals
Transfer of electrons between metals
Sharing of electrons between non-metals
92
____ is define as a condition in which resin allows a direct flow of water through the IX. It is caused by ______.
Resin fines, High influent flow
Resin Channeling, Low influent flow
Resin breakthrough, Low influent flow
Resin Channeling, high influent flow
93
Isotopes of different elements always have a different number of
Electrons
Morons
Neutrons
Protons
94
"A mixture whose composition and properties are uniform throughout the mixture" describes a
Heterogeneous Mixture
Molecules
Homogeneous Mixture
Solution
95
Cracking Egg: Chemical or Physical Change?
Physical Change
Chemical Change
96
Which of the following is a common phase of matter than has a fixed volume but not a fixed shape?
Liquid
Plasma
Gas
Solid
97
What happens to the reactants during in oxidation-reduction process during the oxidation step?
Loss of protons
Gain of electrons
Loss of electrons
Gain of protons
98
Using the periodic table, which is the more reactive non-metal
Tellurium
Oxygen
Sulfur
Selenium
99
What is used to regenerate cation beads?
Base
Acid
100
How does temperature affect the solubility of sugar in water?
Increased temperature decreases the solubility
Increased temperature increases the solubility
Sugar is not soluble in water
101
What two types of corrosion are caused by imperfections in the metal surface?
General and Galvanic
Pitting and Galvanic
Pitting and Crevice
Pitting and General
102
Which of the following is the definition of activation energy?
The maxium amount of energy required to start a chemical reaction
Energy released during an exothermic reaction
The minimum amount of energy required to start a chemical reaction
Energy that is converted to mass during a chemical reaction
103
Which of the following would cause a dilution of a solution?
Increase the amount of solute
Decrease the amount of solvent
Decrease the amount of solute
Stirring the solution
104
What type of compounds produces H⁺ ions when dissolved in water?
Acid
Base
Molecules
Compound
105
The picture below is an example of what type of energic process?
Isothermic
Exothermic
Endothermic
Thermal energy
106
The picture below is an example of what type of energic process?
Endothermic
Exothermic
Isothermic
Thermal energy
107
"Cr" represents what in the picture below?
Chemical Symbol
Average Atomic mass
Atomic Number
Element name
108
What type of stress causes Stress Corrosion Cracking?
Compressive
Tensile
Shear
Stress
109
When resin beads are overheated, which of the following can happen?
Resin can be regenerated
IX sites aren't usable
Resin channelling
Resin Exhaustion
110
How does deaeration work to purify water?
Removes undissolved gases
Removes dissolved gases
Removes water and saves gases
Removes soluble ion
111
Which state phase change can be described as a liquid becoming a solid?
Freezing
Melting
Evaporation
Boiling
112
If an atom or molecule gains an electron it will become a(n) _______ and have a ________ charge.
Cation, negative
Anion, negative
Cation, positive
Anion, positive
113
What is the final concentration of NaOH if 5 liters of pure water are added to 2 liters of a 50 ppm NaOH solution?
14.29 ppm
1000 ppm
142.9 ppm
7.14 ppm
114
Which of the following is a common phase of matter than has a no fixed shape or volume?
Gas
Plasma
Solid
Liquid
115
Ions of different elements always have a different number of
Electrons
Neutrons
Morons
Protons
116
Which state phase change can be described as a solid becoming a liquid?
Melting
Boiling
Freezing
Evaporation
117
If the conductivity of the influent is > the effluent, but the effluent is still too high, what is the likely cause?
Resin Channelling
Resin Exhaustion
Resin Breakthrough
Resin Fines
118
What region of the atom is represented at letter "D"?
Neutron
Neutrino
Nucleus
Electron Cloud

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