What happens when you mix two solutions of the same substance with different concentrations?

The concentration of the new solution is the average.

Which of the following does not decreases the solubility of a solution?

Decreasing the pressure of a solution.

What is NOT true of caffeine?

It stimulates the muscular system.

How does temperature affect saturation in a gaseous solution?

It dilutes the solution as it decreases.

How do you name alcohols?

Replace the ending with -ol and change benzene to phenol.

Why is a seed crystal added into a solution to separate a solution?

The solute needs to crystallize out of the solution.

What is true of a separation process?

It separates a mixture based on it's component's properties.

What is an electrode's function in both half-cells in an electrochemical cell?

A conductor that passes electricity in a circuit.

Why does spectroscopy work?

Each element and molecule absorbs & emits light differently.

What causes more solvent to flow into the side containing the solution with osmotic pressure?

A membrane lets a solvent in, but not a solute.

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Answers

1
Which electromagnetic wave cannot penetrate the atmosphere due to certain gases?
UVC
UVD
UVA
UVB
2
What metal ion turns blue during a flame test?
Iron
Boron
Copper
Cobalt
3
Which of the following is not an elemental form of carbon?
Coal
Amorphous Carbon
Graphite
Diamond
4
What is a process for growing microorganisms on a sugar-based medium?
Fermentation
Combustion
Cellular Respiration
Photosynthesis
5
Which of the following is an organic compound?
Esters
Carbonates and Carbides
Cyanides
Carbon Dioxide
6
For what is centrifugation least likely to be used for?
Cellular/ Molecular Biology
Thermochemistry
Biochemistry and Medicine
Removing a solid or precipitate suspended in a liquid
7
When naming aldehydes which are ring structures, what do you add to the ending?
-carbhyde
-carbalhyde
-aldehyde
-carbaldehyde
8
What percentage of sulfur is found in the rubber used for tires?
50%
5%
25%
2%
9
What elements make up white gold?
Gold, Nickel, Palladium
Gold, Silver, Strontonium
Gold, Cobalt, Strontonium
Gold, Copper, Titanium
10
What prevents more solvent from flowing through the membrane?
A buildup of potential energy.
A buildup of kinetic energy.
A buildup of temperature.
A buildup of pressure.
11
Who discovered vulcanization with serendipity in 1839?
Charles Goodyear
Karl Scheele
John Dalton
Antoine Lavoisher
12
Which type of polymerization is called chain polymerization?
Condensation
Subtraction
Addition
Sublimation
13
What makes up a trigylceride?
A glycerol and a fatty acid.
3 fatty acids and a glycerol.
3 glycerols and a fatty acid.
3 glycerols and 3 fatty acids.
14
What is not a function of the B vitamins?
Promoting cell growth.
Enhancing the function of the immune system.
Enhancing the function of the nervous system.
Promoting bone tissue growth.
15
What do you do first after adding a seed crystal, or solute, into a supersaturated solution?
Use a solid-liquid separation method.
Wait for the crystal to grow.
Cool the solution.
Heat the solution.
16
What metal ion turns yellow during a flame test?
Sodium
Copper
Cobalt
Boron
17
What percentage of sulfur is found in the rubber used for a hard synthetic plastic?
2%
5%
50%
25%
18
What is formed from glucose and galactose?
Sucrose
Maltose
Ribose
Lactose
19
What relieves pain, fever, and inflammations?
Nitric Acid
Calcium Chloride
Salicyclic acid
Muriatic Acid
20
What is used to add the titrant into the solution with a known volume & unknown concentration?
A pipette
A buret
A volumetric flask
An Erlenmeyer flask
21
Which of the following is not a triglyceride?
Fats
Bile
Butter
Oils
22
What color in the spectrum has a wavelength of about 700 nanometers?
Red
Orange
Purple
Indigo
23
What color does a strontium metal ion show under a flame test?
Yellow
Green
Blue
Red
24
What is the chemical formula for ethylene gycol, used in antifreeze?
C2H3O2
C2H6O2
C2H4O2
C2H6O
25
What do you add to the ending of an aldehyde when naming simple chains?
-del
-hyde
-dehyde
-al
26
What happens when you mix two solutions of the same substance with different concentrations?
The concentration of the new solution is the average.
The concentration of the new solution is the sum.
The concentration of the new solution is the product.
The concentration of the new solution is the difference.
27
What color does iodine turn if it detects starch?
Black or dark blue
Purple or dark blue
Yellow or orange
Light blue or green
28
Which of the following does not decreases the solubility of a solution?
Initiating a chemical reaction.
Adding a common ion, or changing the PH of the solution.
Decreasing the pressure of a solution.
Decreasing the temperature of a solution.
29
What is NOT true of caffeine?
When purified, it is an intensely white, bitter powder.
It stimulates the central respiratory system and heart rate.
It stimulates the muscular system.
It stimulates the central nervous system.
30
Which of the following is an example of natural cellulose?
Tea Leaves
Trees
Tobacco
Cotton
31
Which type of plastics include strong cross-linked bonds, creating a stable structure?
Thermosets
Thermoplastics
32
How many thermal calories make up a food calorie? (kilocalorie)
100
0.01
1000
0.001
33
How does temperature affect saturation in a gaseous solution?
It dilutes the solution as it decreases.
It dilutes the solution as it increases.
It does not affect the solution at all.
34
If benzene is the "R" in an aldehyde what do you add to the ending?
-carbalhyde
-aldehyde
-benzaldehyde
-carbal
35
What is used in filtration, but not decantation?
A Barrier Substance
Sediments
A Solvent
A Solute
36
What is NOT a part of Fehling's Solution B?
Potassium Sodium Tartrate
Sodium Hydroxide
Sodium Citrate
37
Which type of plastics include acrylics, which strongly withstand weather and change?
Thermoplastics
Thermosets
38
How do you name alcohols?
Replace the ending with -ol and change benzene to phenol.
Replace the ending with -nol
Replace the ending with -ol
Replace the ending with-nol and change benzene to phenol.
39
Which type of polymerization involves adding monomers to a long chain one at a time?
Sublimation
Subtraction
Condensation
Addition
40
What type of plastics can be remolded?
Thermoplastics
Thermosets
41
Why is a seed crystal added into a solution to separate a solution?
Seed crystals decrease particle energy in a solution.
The solute needs to crystallize out of the solution.
A seed crystal decreases the average solubility.
Seed crystals dissolve if a saturated solution is heated.
42
What elements make up bronze?
Cobalt, Zinc
Copper, Tin
Copper, Zinc
Copper, Cobalt
43
What metal ion turns green during a flame test?
Sodium
Cobalt
Iron
Boron
44
Who invented the mass spectrometer?
Ernest O Lawrence
Francis Aston
Karl Scheele
Alfred Nobel
45
What type of radiation contains Vitamin D3?
UVB
UVD
UVA
UVC
46
What is true of a separation process?
It can separate alloys based on it's component's properties.
It uses physical means only to separate a mixture.
It separates a mixture based on it's component's properties.
It uses chemical means only to separate a mixture.
47
What is an electrode's function in both half-cells in an electrochemical cell?
An insulator stopping electrons from flowing in bad places.
A cathode that takes in electrons.
An anode that gives up electrons.
A conductor that passes electricity in a circuit.
48
What pharmaceutical kills and prevents the growth of both harmful and helpful bacteria?
Anti-ulcer medicines
Antibiotics
Antihistimines
Vaccines
49
How many carbon atoms are found in an atom of buckminsterfullerene?
60
40
50
30
50
Why does spectroscopy work?
Spectral lines change as they move up or down the spectrum.
Every element and molecule can reflect light particles.
Light particles are only in the visible spectrum.
Each element and molecule absorbs & emits light differently.
51
What causes more solvent to flow into the side containing the solution with osmotic pressure?
A membrane does not let a solute or solvent in.
A membrane lets a solvent in, but not a solute.
A membrane lets a solute and solvent in.
A membrane lets a solute in, but not a solvent.
52
What is the boiling point of salt?
1400 degrees Celcius
1250 degrees Celcius
1000 degrees Celcius
1550 degrees Celcius
53
Which element did Karl Scheele NOT discover?
Chlorine
Mangenese
Barium
Antimony
54
How do you name esters?
Chain 1: End in -ayl. Chain 2: End in -ate
Chain 1: End in -ayl. Chain 2: End in -oate
Chain 1: End in -yl. Chain 2: End in -ate
Chain 1: End in -yl. Chain 2: End in -oate
55
What does NOT increase as you move down the fractional distillation column?
Concentration
Density
All of the above
Boiling Point
56
What percentage of sulfur is found in the rubber used for rubber bands?
2%
50%
25%
5%
57
What are chemical processes that produce energy called?
Metabolism
Cellular Respiration
Fermentation
Photosynthesis
58
How many Scoville Heat Units does pepper spray measure?
200,000,000
40,000,000
5,000,000
800,000
59
Why are we able to ingest garlic without feeling burning sensations?
Sulfur compounds react with water and the products are safe.
Allicin is unstable and changes into other compounds.
Sulfur-based compounds in garlic contain neutralizers.
Allicin is probiotic and bacteria break down poisons for us.
60
What is something that should not be done in titration?
A titrant must be added in small amounts.
A titrant should be added after a color change.
The titrant must react well with the solute in the solution.
A titrant should be added until a color change.
61
How do you name ethers?
Add ether to the end;name both chains; make the endings -yl.
Name the longest chain; make the ending -yl;
Add ether to the end;make the endings -yl.
Name both chains; make the endings -yl.
62
How does the mass spectrometer measure the relative atomic mass of any element?
It separates the electron orbitals from the nucleus.
It separates the ions.
It separates different isotopes of the elements.
It separates the protons and neutrons within the nucleus.
63
What is gravimetric analysis used to determine?
Concentration
PH/POH
Volume
Mass
64
How many Scoville Heat Units does habaneros measure?
300,000
1,000,000
70,000
5,000,000
65
What is the measure of maximum force a material can withstand before breaking entirely?
Elasticitity
Tensile Strength
66
Which of the following is NOT a type of spectroscopy used in a lab?
NMR (Nuclear Magnetic Resonance)
X-ray Spectroscopy
UV/VIS (Ultraviolet/Visible)
Raman Spectroscopy
67
How is a diesel engine ignited, unlike a regular car engine?
High concentration of gas.
High temperature.
The spark plug.
Compression.
68
What is the chemical formula for chitin?
C6H14O4N2
C8H13O5N
C8H14O6N
C7H14O6N
69
What is a structural isomer?
Different compounds with the same empirical formula.
Different compounds with the same elements.
Different compounds with the same chemical formula.
Different compounds with the same base structure.
70
What color in the spectrum has a wavelength of about 400 nanometers?
Purple
Orange
Indigo
Red
71
Which usually takes longer?
Filtration
Decantation
72
C12H22O11 is the chemical formula for what compound?
Grain Alcohal
Baking Soda
Table Sugar (Sucrose)
Carbonized/Seltzer Water
73
In electroplating, what is the substance to be plate the substance which will be enhanced?
The anode
The cathode
74
What pharmaceutical provides relief of pain without the loss of consciousness?
Antibiotics
Analgelsics
Antitussive medicines
Adrenocorticosteroids
75
How much of vinegar is acetic acid?
4%
20%
10%
1%
76
How do microwave ovens heat food?
They cause the food to vibrate and conduct.
They cause water molecules to rotate.
The radiation is warm and heats the food.
They cause a light to vibrate and heat the food.
77
What is charcoal during adsorption?
The adsorbant
The adsorbate
78
What is the general formula for a sugar?
CnH4Om
CnH2Om
CnHOm
CnH3Om
79
What do nonpolar solvents dissolve?
Nonpolar solvents
Polar solvents
Polar solutes
Nonpolar solutes
80
Which of the following is the good cholesterol?
HDL
RDL
SDL
LDL
81
How does pressure affect solubility?
Solubility increases as it increases.
Solubility decreases as it increases.
Solubility is affected so little that it does not matter.
Solubility is not affected by pressure at all.
82
What changes when naming a halocarbon?
Add the suffix of the halogen after the name.
Add the suffix of the halogen before the name.
Add the prefix of the halogen before the name.
Add the prefix of the halogen at the end of the name.
83
What is NOT used during centrifugation?
A pipette
A test tube
A Bunsen burner
A centrifuge
84
What states that for equal gases at the STP, they will have the same # of molecules?
Lawrence's Law
Avogadro's Law
Bohr's Law
Dalton's Law
85
Which hydrocarbon is least likely to be used as diesel fuel?
C15H32
C16H34
C17H38
C14H30
86
What is iodine NOT used in or used for?
Being added to table salt .(iodized salt)
Disinfecting cuts or wounds.
Maintaining normal thyroid function.
Regulating the water levels in the human body.
87
Which element did Karl Scheele NOT discover?
Molybedium
Cesium
Tungsten
Oxygen
88
What does Quantitative Analysis determine?
What substances are in a sample.
How much of a substance there is in a sample.
How many substances there are in a sample.
Whether or not a substance exists in a sample.
89
What functional group is a ketone with an oxygen atom between R1 and the central carbon atom?
Carboxylic Acid
Ether
Aldehyde
Ester
90
What do polar solvents dissolve?
Polar solvents
Nonpolar solvents
Nonpolar solutes
Polar solutes
91
What is the chemical formula for allicin, a sulfur-based compound in uncooked garlic?
C6H10OS2
C5H11OS2
C5H9OS2
C6H8OS2
92
Plants store food in what?
Glucose
Cellulose
Glycogen
Starch
93
How many milligrams of theobromine are found in an ounce of dark chocolate?
200-220
10-20
40-60
150-160
94
What is quantitative analysis usually used for?
Determining the concentration of a substance.
Determining the amount of an element in a substance.
Determining the ratio of an element & another in a substance
Determining the average atomic mass of the substance.
95
Which of the following is NOT true of lipids?
They play an important role in regulating body functions.
They reduce the rate of heat transfer to keep the body warm.
They play an important role as a conductor in the body.
They are insoluble in water.
96
What is the formula for the molarity of a solution?
Moles of solute divided by liters of solution.
Moles of solvent divided by liters of solute.
Moles of solute divided by liters of solvent.
Moles of solvent divided by liters of solution.
97
Which of the following has a lower boiling point?
Lubricating Oils
Waxes & Polishes
Gasoline
Liquified Petroleum Gas
98
What flavors food due to chemical reactions with taste receptors on the tongue?
Caffeine
Sugar
Salt
Pepper
99
What type of polymerization often yields a byproduct?
Subtraction
Condensation
Additon
Sublimation
100
What is the chemical formula for capsaicins, which add heat to red peppers?
C18H27NO3
C15H21NO3
C15H30NO3
C18H24NO3
101
Where will you least likely find chromatography being used in?
Kinetic Chemistry and Energy
Pharmaceutical Science
Forensic Science
Biochemistry
102
What does Qualitative Analysis determine?
How much of a substance there is in a sample.
Whether or not a substance exists in a sample.
How many substances there are in a sample.
What substances are in a sample.
103
H2CO3 is the chemical formula for what compound?
Grain Alcohal
Carbonized/Seltzer Water
Table Sugar (Sucrose)
Baking Soda
104
When naming amides, if R2 is a hydrogen, what is the ending?
-anamide
-ylamide
-ylanamide
-amide
105
Which of the following does NOT allow solvent extraction to work?
Impurities within the original solvent must exist.
The solution must be aqueous.
The solute must be more soluble in the new added solvent.
The two solvents form separate layers within the solution.
106
What is NOT special about plastics, unlike other forms of polymerization?
They can be cast into shapes.
They can be drawn into fibers.
All of them can be remolded.
They can be molded.
107
Which of the following hydrocarbon chains are least likely to be formed into gasoline?
C7H16
C6H14
C5H12
C8H18
108
What is the most common way a supersaturated solution is formed?
Adding a little solute to a saturated solution.
Adding a lot of solute to a regular or diluted solution.
Heating a saturated solution.
Cooling a saturated solution.
109
What happens in both half-cells in an electrochemical cell?
A reduction reaction occurs.
An oxidation reaction and a reduction reaction occurs.
An oxidation reaction occurs.
There is an conductor placed in an ion containing solution.
110
Who proposed that heat was based on the motion of molecules?
Karl Scheele
William Thomson
Joseph Priestly
Antoine Lavoiser
111
What sugar testing solution allows for both qualitative and quantitative analysis?
Fehling's Solution
Benedict's Solution
112
What is soluble in fats and water and is essential for the growth and development of the body?
Sugars
Proteins
Vitamins
Nucleic Acids
113
Animals store food in what?
Glycogen
Cellulose
Glucose
Starch
114
How many Scoville Heat Units does pure capsacin measure?
100,000,000
400,000
3,000,000
16,000,000
115
What is the first step of gravimetric analysis?
Use a separation to remove a component from the sample.
Measure the entire mass of the sample.
Measure the mass of a component in the mixture.
Subtract the mass of the sample by the inital sample.
116
Which type of polymers are synthesized from products of living organisms?
Biopolymers
Biodegradable plastics
117
What do you replace the ending with when naming ketones?
-alnone
-aneone
-anone
-one
118
What is a crystal?
Solid particles arranged in a repeating pattern.
Plasma particles arranged in a repeating pattern.
Gas particles arranged in a repeating pattern.
Liquid particles arranged in a repeating pattern.
119
In what year did scientists begin using Carbon-12 to measure atomic mass?
1950
1934
1961
1944
120
What pharmaceutical treats allergic reactions?
Antitussive medicines
Anti-hypertensives
Antihistimines
Adrenocorticosteroids
121
What is the chemical formula for theobromine, a important compound that is found in chocolate?
C4H12N4O2
C4H8N4O2
C7H8N4O2
C5H10N4O2
122
What is the electrode called in the half-cell where the oxidation reaction takes place?
A cathode
An anode
123
Which type of plastics include GRPs, or glass reinforced plastics?
Thermosets
Thermoplastics
124
What is NOT true about an electrolyte in an electrochemical cell?
It easily forms ions in a solution.
It can carry an electric current via ions in a solution.
It either takes in or gives up electrons.
It promotes reactions starting in each half-cell.
125
When was the mass spectrometer invented?
1919
1926
1932
1904
126
Which element is NOT found in coal?
Sulfur
Oxygen
Boron
Nitrogen
127
What is the second step of gravimetric analysis?
Subtract the mass of the sample by the inital sample.
Measure the mass of a component in the mixture.
Use a separation to remove a component from the sample.
Measure the entire mass of the sample.
128
What causes a supersaturated solution to become unstable?
A decrease in solubility
An increase in pressure.
An increase in temperature.
An increase in solubility
129
What is Vitamin B2?
Riboflavin
Thiamine
Leucine
Niacin
130
What is solvent extraction least commonly used for?
Separating insoluble coffee grounds in a coffee machine.
Recovering vegetable oil from an oil-seed.
Removing chemicals from soil.
Separating poisonous chemicals in pharmaceuticals.
131
During adsorption, what is created by the contaminants (the adsorbate) around the adsorbent?
A salt.
A basic solute.
A thick layer or film.
An acidic solute.
132
What is boiling point elevation?
Solutions boiling at a higher point than the pure solvent.
Solutions boiling at a higher point than the pure solvent.
Solutions boiling at a lower point than the pure solute.
Solutions boiling at a higher point than the pure solute.
133
What polysaccharide is found within the exoskeleton of crustaceans, spiders, and insects?
Deoxyribose
Ribose
Chitin
Methionine
134
Which type of polymerization is called step polymerization?
Subtraction
Condensation
Sublimation
Addition
135
The enzymes that catalyze reactions breaking down sugars tend to end in what suffix?
-ese
-ase
-ose
-ise
136
Which solvent and solute combination would not dissolve within each other?
Ammonia and Water
Oil and Water
Hydrocarbons and Benzene
Parrafin Wax and Coke
137
Which spectral lines should show more colors for any element or compound?
Emission Spectral Lines
Absorption Spectral Lines
138
What is used to determine the structure of organic compounds?
Magnetic Resonance Imaging
Nuclear Magnetic Resonance
139
What is the boiling point of ethanol?
37.6 degrees Celcius
56.7 degrees Celcius
78.4 degrees Celcius
92.4 degrees Celcius
140
What does a spectrometer do?
It determines how a substance absorbs/reflects light.
It determines how a substance emits/absorbs light.
It determines how a substance refracts/reflects light.
It determines how a substance emits/refracts light.
141
What sepearates mixtures based on differences in their boiling points?
Solvent Extraction
Distillation
Centriguation
Chromatography
142
What is NOT true of caffeine?
It acts as a natural pesticide and kills insects.
When purified, it is an intensely dark, bitter powder.
It gives coffee a bitter flavor.
It increases the urine production of humans.
143
What does the condenser do in distillation?
It contains the starting solution.
It heats up the starting solution.
It collects the pure substance.
It cools the pure vapor.
144
What is the chemical formula for piperine, a main ingredient in black pepper?
C12H17NO3
C17H19NO3
C15H20NO3
C14H18NO3
145
What is the starting solution in acid-base titration?
The indicator
The neutral substance
The acid
The base
146
Which of the following is not a type of coal?
Anthracite
Subituminous/Bituminous
Lignite
Diorite
147
What causes the mobile phase to separate?
The components have elements that react differently.
The components move over it at different speeds.
The components' molecular structures have different shapes.
The components' molecular structures have different sizes.
148
Which type of polymers are formed within living organisms?
Biopolymers
Biodegradable plastics
149
Which electromagnetic wave has a wavelength of 200 nanometers minimum?
UVC
UVB
UVA
UVD
150
What is the formula for percent composition by mass?
Mass of solvent divided by mass of solute.
Mass of solvent divided by mass of solution.
Mass of solute divided by mass of solvent.
Mass of solute divided by mass of solution.
151
What is the chemical formula for sulfuric acid?
H2SO
H2SO4
H2SO2
H2SO3
152
What is the purified substance known as in distillation?
The Receiving Flask
The Pure Vapor
The Distillate
The Condensor
153
Specific heat measures how much heat is required to raise a ______of a substance by a_________.
gram, degree Celcius
ounce, degree Fahrenheit
ounce, degree Celcius
gram, degree Farenheit
154
When must you stop adding a titrant to a solution with a known volume & unknown concentration?
When the solution becomes supersaturated.
When a chemical reaction or color change occurs.
When the solution becomes saturated.
When the solution becomes diluted.
155
Which of the following is not a fermentation process?
Making beer and wine
Making cheese and yogurt
Baking bread
Growing bread
156
Which of the following describes both heating capacity and cooling capacity?
Kilocalorie
British Thermal Unit
Calorie
PSI
157
What ending do you add to amines?
-amine
-ine
-ylamine
-anamine
158
What enzyme breaks starch down into individual glucose units in the digestive tract of mammals?
Sucrose
Maltose
Amylase
Amylopectase
159
Which alkane can take the most compression before igniting?
Pentane
Heptane
Octane
Hexane
160
Which type of polymerization forms nylon-6,6 which is user in nearly all synthetic polymers?
Subtraction
Condensation
Sublimation
Addition
161
What is Fehling's Solution A?
Aqueous Copper Sulfate
Sodium Hydroxide
Pottasium Sodium Tartrate
Sodium Carbonate
162
What is the main cause of coal being formed?
Kinetic Energy
Potential Energy
Temperature
Pressure
163
What functional group has "R" connected to a hydroxide ion?
Carboxylic Acid
Ether
Alcohal
Ester
164
Which of the following does NOT have the same chemical formula?
Fructose
Ribose
Galactose
Glucose
165
Where is one place amorphous carbon cannot, or will rarely ever be found in?
Charcoal
Coal
Andesite
Soot
166
What is combustion?
An endothermic propogation reaction
An exothermic redox reaction
An endothermic redox reaction
An exothermic propogation reaction
167
What percent of battery acid is water, with the rest of it being sulfuric acid?
40%
50%
66%
80%
168
What's added to the starting solution to see if there's a reaction in acid-base titration?
The base
The acid
The neutral substance
The indicator
169
What is true about spectroscopy?
It allows for qualitative and quantitative analysis.
It is used to determine how much of an element there is.
Elements have spectral lines across the entire spectrum.
It can determine the solubility of an acid or base.
170
How did Dorothy Hodgkin determine the structures of penicillin, vitamin B12, and insulin?
Titration
Spectroscopy
X-ray crystallography
Solvent Extraction
171
What is used to observe the structure and function of the human body?
Nuclear Magnetic Resonance
Magnetic Resonance Imaging
172
What is Vitamin B3?
Leucine
Riboflavin
Thiamine
Niacin
173
What is the electrode called in the half-cell where the redution reaction takes place?
An anode
A cathode
174
What functional group contains an oxygen atom between two "R" groups?
Ester
Carboxylic Acid
Ether
Amide
175
How many heat calories make up a British Thermal Unit?
252
12
1432
100
176
What is the fourth step of gravimetric analysis?
Use a separation to remove a component from the sample.
Subtract the mass of the sample by the inital sample.
Measure the entire mass of the sample.
Measure the mass of the seperated component in the sample.
177
What is the combination for a steroid?
6,6,6,5
5,5,5,6
5,5,5,5
6,6,6,6
178
What would scientists least likely use crystallization for?
Removing salts from solutions.
Purifying a crystalline solid so it won't have other things.
Producing pharmaceuticals.
Purifying amorphous solids so it won't have other things.
179
In electroplating, what is the substance to be plated, or enhanced?
The cathode
The anode
180
What differences between mixtures allow chromatography to work?
Density
Solubility
The composition of the particles
Boiling Point
181
How many hydrogen atoms are there in an alkane?
2C + 2
2C + 4
2C
2C - 2
182
What type of pharmaceutical suppresses or relieves coughs?
Analgelsics
Antitussive medicines
Antihistimines
Anti-hypertensives
183
What are the denser particles in a mixture called during decantation?
Sediment
Solute
Barrier Substance
Solvent
184
How many milligrams of theobromine are found in an ounce of milk chocolate?
10-20
150-160
40-60
220-300
185
Analytical Chemistry focuses on what?
Understanding the chemical makeup of matter.
Determining how to separate mixtures and solutions.
Understanding the elements on the Periodic Table.
Analyzing chemical compounds.
186
What is made up of two molecules of glucose and formed from the digestion of starch?
Lactose
Sucrose
Ribose
Maltose
187
How are crystalline solids separated from a solution?
The seed crystal must vaporize.
The solute must vaporize.
The solvent must vaporize.
The crystalline solid must vaporize.
188
Which of the following is not a biopolymer?
Proteins
Bases
Cellulose
Starch
189
How many hydrogen atoms are there in an alkene?
2C - 2
2C
2C + 4
2C + 2
190
How does temperature affect solubility?
Solubility is not affected.
Solubility increases as it increases.
Solubility decreases as it increases.
191
What state of matter is the mobile phase usually?
Gas
Solid
Plasma
Liquid
192
How does temperature affect saturation in a liquid solution?
It dilutes the solution as it increases.
It does not affect the solution at all.
It dilutes the solution as it decreases.
193
What tends to happen to a supersaturated solution?
Dilution
Solvent Extraction
Precipitation
Saturation
194
What elements make up pewter?
Cobalt, Selemnium, Copper, Tin
Iron, Nickel, Tellurium, Molybedium
Tin, Copper, Bismuth, Antimony
Technectium, Cadmium, Palladium, Nickel
195
What is the transfer of energy by the bulk molecular motion of a gas, solid, or liquid?
Convection
Radiation
Conduction
196
What is H₃C-CH₃ with an oxygen double bonded to a carbon in between them called?
Acetone
Acetol
Acetal
Acetate
197
What is freezing point depression?
Solutions freezing at a lower point than the pure solvent.
The pure solvent freezing at a lower point than the solution
Solutions freezing at a lower point than the pure solute.
Solutions freezing at a higher point than the pure solvent.
198
True or False? The mole applies to elements, compounds, and even much larger substances.
True
False
199
How much is a mole?
6.02 × 1024
6.02 × 1023
6.02 × 1021
6.02 × 1022
200
In titration, what is added to a solution with a known volume and unknown concentration?
A solution with an known concentration and a known volume.
A titrant is added after a chemical reaction occurs.
The titrant is added and the volume of it is measured.
A known volume of an indicator and a solute is added.
201
If human blood was seperated by centrifugation, what end up on the top layer?
Red Blood Cells
Plasma
White Blood Cells
Platelets
202
What is the chemical formula for caffeine?
C4H6N3O2
C8H12N4O2
C8H10N4O2
C7H13N5O2
203
What will help the most if you eat something very spicy?
Water, because it washes away the capsaicins
Hydrochloric acid, because the acid neutralizes the capsacin
Oil, because it is non-polar, and will dissolve the capsacin
Yogurt, because the fat dissolves the capsaicin
204
What elements make up steel?
Iron, Carbon
Nickel, Oxygen
Iron, Oxygen
Nickel, Carbon
205
How many milligrams of theobromine are found in an ounce of pure dry cacao powder?
800
2000
1200
600
206
Who distinguished heat transfer via radiation from conduction and convection?
Ernest Rutherford
Karl Scheele
Antoine Lavoisher
William Thomson
207
Which electromagnetic wave is the biggest?
UVC
UVA
UVB
UVD
208
What is the transfer of energy by the collisions of nearby atoms?
Conduction
Convection
Radiation
209
What is Vitamin B1?
Leucine
Thiamine
Riboflavin
Niacin
210
What substances work best when used in a flame test?
Metal ions
Liquids and Gases
Pure Metals
Sediment
211
What can be calculated after titration?
The volume of the new solution.
The volume of the titrant that is added.
All of the above.
The concentration of the old solution.
212
NaHCO3 is the chemical formula for what compound?
Grain Alcohal
Table Sugar (Sucrose)
Baking Soda
Carbonized/Seltzer Water
213
Is a sponge taking in water is an example of absorption or adsorption?
Absorption
Adsorption
214
What is solid-liquid extraction?
When the solute is a solid.
When a solvent is added to a mixture of solids.
When the second solvent is a solid.
When the first solvent is a solid.
215
What functional group has an oxygen double bonded to a carbon, bonded to hydrogen and "R"
Aldehyde
Ester
Carboxylic Acid
Ketone
216
What has carbon double bonded to an oxygen, and single bonded with a hydroxide ion and an "R"?
Ketone
Ester
Carboxylic Acid
Aldehyde
217
What is formed from one molecule of glucose and one molecule of fructose?
Sucrose
Ribose
Maltose
Lactose
218
What does spectroscopy NOT determine?
The molecular structure of a particle.
How atoms emit and absorb energy in the form of light.
The chemical composition of a substance.
How much of each element is in a substance.
219
Which ignites the fastest?
Fuels with less cetane.
Fuels with more cetane.
220
What typically follows centrifugation?
Decantation
Solvent Extraction
Distillation
Chromatography
221
How do you compare the boiling point of hydrocarbons with the boiling point of water?
They are the same.
The boiling point of water is lower.
The boiling point of water is higher.
They change a lot (are unstable), and are not measurable.
222
Which of the following bases is not found in RNA, and is replaced with Uracil?
Guanine
Thymine
Cytosine
Adenine
223
How do you name carboxylic acids?
End with -oic and add "acid".
End with -oic.
End with -ic and add "acid".
End with -ic.
224
Which of the following is NOT a protein?
Amino Acids
Cholesteral
Insulin
Hemoglobin
225
What does the octane rating NOT tell us?
What percentage of gas is octane and not heptane.
How much fuel can be compressed before igniting on its own.
How much cetane is contained in the fuel.
How much the engine can be damaged using that fuel.
226
What elements make up brass?
Copper, Cobalt
Copper, Tin
Cobalt, Zinc
Copper, Zinc
227
Which form of starch is there are branched chains?
Amylose
Amylopectin
228
What functional group is a ketone, with an added NH₂ in between R2 and the central carbon atom?
Amide
Anamide
Amine
Anamine
229
Which type of polymerization is used to create polyethylene and polypropylene?
Sublimation
Subtraction
Condensation
Addition
230
What percentage of diesel fuels usually contain cetane?
45%
60%
15%
30%
231
What substance do you heat rubber with to make it stronger?
Phosphorous
Sulfur
Iron
Carbon
232
How many Scoville Heat Units does jalapenos measure?
600,000
75,000
5,000
800
233
What is used in gravimetric analysis to separate a solid sample in order for it to be weighed?
Precipitation
Chromatography
Distillation
Solvent Extraction
234
What is the transfer of energy via electromagnetic waves?
Convection
Conduction
Radiation
235
If a carbon is bonded to 2 "R"'s on their sides and an oxygen on their top, what is it?
Ketone
Carboxylic Acid
Aldehyde
Ester
236
What does NOT cause a solute to crystallize out of the solution?
A seed crystal
A jagged surface
A flat surface
A cooled supersaturated solution.
237
What property does solvent extraction use to separate a solution?
Solubility
Boiling Point
The composition of the particles within the solution
Concentration
238
What do scientists use to filter colors produced by different metal ions?
Filter Glass
Filter Wires
Filter Films
Filter Paper
239
When naming amides, if R2 is a carbon chain, what are the prefixes and suffixes?
N- -yl
N-
-yl
N- -ylamine
240
In the formula for specific heat, what is specific heat equal to?
Heat absorbed divided by (mass times change in degrees)
(Mass times change in degrees) divided by heat absorbed
Mass divided by (change in degrees times heat absorbed)
Change in degrees divided by (mass times heat absorbed)
241
What elements make up alnico?
Aluminum, Nickel, Iron, Copper
Aluminum, Nickel, Cobalt, Copper
Aluminum, Nickel, Iron, Cobalt
Aluminum, Nickel, Cobalt, Seleminium
242
If human blood was separated by centrifugation, what would be on the bottom?
Plasma
Red Blood Cells
White Blood Cells
Platelets
243
What is true when comparing artificial sweeteners and regular sugars?
Artificial sugars have less calories per gram.
Artificial sugars have less sweetness per gram.
Artificial sugars have more calories per gram.
Artificial sugars and regular sugars have no differences.
244
Which of the following has a higher boiling point?
Jet Fuel
Kerosine
Diesel Fuel
Bitumen
245
Which type of polymerization formed kevlar, which is used for military helmets?
Condensation
Subtraction
Addition
Sublimation
246
In titration, what holds the solution with a known volume & unknown concentration?
A beaker
A Florence flask
A volumetric flask
An Erlenmeyer flask
247
What is NOT a part of Benedict's Solution?
Copper Sulfate
Sodium Carbonate
Sodium Citrate
Sodium Hydroxide
248
Which functional group is R-NH₂?
Anamine
Amine
Anamide
Amide
249
What adsorbate is often used in water purification systems because adsorbants stick to ii?
Brass
Charcoal
Iron
Alnico
250
What separates a mixture based on it's component's differences in density?
Adsorption/Absorption
Chromatography
Solvent Extraction
Centrifugation & Decantation
251
What is the titrant in acid-base titration?
The acid
The indicator
The neutral substance
The base
252
If you are naming an amide with a ring structure, what is the ending?
-carboxamide
N- -carboxamide
-cycloanamide
N- -cycloanamide
253
What is the most unstable solution?
A regular solution
A diluted solution
A saturated solution
A supersaturated solution
254
How many hydrogen atoms are there in an alkyne?
2C + 2
2C
2C - 2
2C + 4

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