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Question 1 (2 points)SavedQuestion 1 options:IsomersAllotropesIonic compoundsCovalent compounds

 

Molecules with the same molecular formula but with different chemical structures and different properties are called ________.

Question 2 (2 points)

 


Saved







What are the number of protons, neutrons, and electrons in oxygen-18:

Question 2 options:


8 protons, 8 electrons, and 10 neutrons


8 protons, 10 electrons, and 10 neutrons


8 protons, 10 electrons, and 11 neutrons


7 protons, 7 electrons, and 9 neutrons

Question 3 (2 points)

 


Saved







What are chlorofluorocarbons (CFCs)?

Question 3 options:


compounds composed of the elements boron, fluorine, and carbon only


compounds composed of the elements lithium, lead, and potassium only


compounds composed of the elements chlorine, fluorine, and carbon other small amounts of other elements


compounds composed of the elements chlorine, fluorine, and carbon only

Question 4 (2 points)

 


Saved







What year was Tetraethyllead (TEL) first approved for use in gasoline in the United States?

Question 4 options:


1926


1934


2000


1999

Question 5 (2 points)

 


Saved







Which of the following is the name and symbol for the element with 2 protons?

Question 5 options:


Boron, B


Fluorine, F


helium, He


Argon, Ar

Question 6 (2 points)

 


Saved







What are alkanes?

Question 6 options:


Hydrocarbons with single bonds between carbon


Hydrocarbons with double bonds between carbon


Hydrocarbons with triple bonds between carbon


Structure with no bonds between elements

Question 7 (2 points)

 


Saved







Which of the following is the correct order of increasing energy per photon of these different types of radiation?

Question 7 options:


radiowaves < infrared < visible < gamma rays


radiowaves < visible < infrared < gamma rays


radiowaves < gamma < infrared < visible


radiowaves < microwaves< visible < gamma rays

Question 8 (2 points)

 


Saved







Mercury is a _________ in Group 12 on the periodic table

Question 8 options:


Alkali earth metal


Alkaline earth metal


Transition metal


Actinoids

Question 9 (2 points)

 


Saved







Which of the following is the name and symbol for the element with 29 protons?

Question 9 options:


Silicon, Si


Iodine, I


Neon, Ne


copper, Cu

Question 10 (2 points)

 








Is a concentration of 5000 μg of carbon monoxide (CO) per cubic meter of air safe to breath?

Question 10 options:


Yes; because 5000 μg/m3 is more than both the 1-h and 8-h exposure limits, which are 40,000 and 10,000.


Yes; because 5000 μg/m3 is less than both the 1-h and 8-h exposure limits, which are 40,000 and 10,000.


No; because 5000 μg/m3 is less than both the 1-h and 8-h exposure limits, which are 40,000 and 10,000.


No; because this limit is high and the body cannot tolerate it

Question 11 (2 points)

 








Volatile organic compounds are carbon-containing compounds that pass easily into the vapor phase.

Question 11 options:

TrueFalse

Question 12 (2 points)

 








Why are emissions lower for sulfur dioxide?

Question 12 options:


Sulfur dioxide is not emitted at all


Petroleum diesel contains small amounts of sulfur


Petroleum diesel contains large amounts of sulfur


Petroleum diesel does not contain sulfur

Question 13 (2 points)

 








Which of the following is the name and symbol for the element with 19 protons?

Question 13 options:


Neon, Ne


potassium, K


Nitrogen, N


Sodium, NA

Question 14 (2 points)

 








What is the Pollution Prevention Act of 1990?

Question 14 options:


Act established to clean up pollution after it has occurred


Act established to raise money for pollution


Act established to prevent pollution rather than cleaning pollution up after the fact


Act established to designate a certain part of the government to be liable for pollution in areas

Question 15 (2 points)

 








Which of the following is not an example of renewable fuel?

Question 15 options:


Coal


Ethanol


Natural gas


Petroleum

Question 16 (2 points)

 








Which of the following is not a waste product of high-purity silicon?

Question 16 options:


Carbon monoxide


Carbon dioxide


Boron


Helium

Question 17 (2 points)

 








H+ is a hydrogen atom that has ______an electron

Question 17 options:


Lost


Gained


Removed


Replaced

Question 18 (2 points)

 








The ______ is the lowest region of the atmosphere in which we live that lies directly above the surface of Earth

Question 18 options:


desert


highland


troposphere


stratosphere

Question 19 (2 points)

 








What are the number of protons, neutrons, and electrons in neon-19 (1019Ne):

Question 19 options:


8 protons, 8 electrons, and 10 neutrons


16 protons, 16 electrons, and 19 neutrons


8 protons, 10 electrons, and 11 neutrons


10 protons, 10 electrons, 9 neutrons

Question 20 (2 points)

 








What is a molecular compound?

Question 20 options:


compounds made of ions


compounds composed of two or more nonmetals


compounds that share electrons through ionic bonds


compounds composed of a metal and nonmetal

Question 21 (2 points)

 








Ultraviolet radiation is categorized as UVA, UVB, or UVC. Which of the following is in order of increasing wavelength?

Question 21 options:


UV-C < UV-B < UV-A


UV-B< UV-A < UV-C


UV-D < UV-B < UV-A


UV-B < UV-C < UV-A

Question 22 (2 points)

 








What is the symbol showing the atomic number and the mass number for the isotope that has 9 protons and 10 neutrons, which is used in nuclear medicine?

Question 22 options:


19/9C


19/9B


18/7F


19/9F

Question 23 (2 points)

 








What are the number of protons, neutrons, and electrons in uranium-239 (82239U):

Question 23 options:


8 protons, 8 electrons, and 10 neutrons


82 protons, 82 electrons, 157 neutrons


8 protons, 10 electrons, and 11 neutrons


8 protons, 8 electrons, and 10 neutrons

Question 24 (2 points)

 








What is a fuel cell?

Question 24 options:


is an electromagnetic cell that produces electricity by converting the chemical energy of a fuel directly into electricity without burning the fuel


is an electrochemical cell that produces electricity by converting the chemical energy of a fuel directly into electricity without burning the fuel


is an electrochemical cell that produces chemical energy of a fuel directly without electricity


Cell that contains gasoline

Question 25 (2 points)

 








Express 1500 m, the distance of a foot race, in scientific notation.

Question 25 options:


9.5 ´ 103 m


1.5 ´ 103 m


6.5 ´ 103 m


8.0 ´ 103 m

Question 26 (2 points)

 








Particulate matter is classified by _____ rather than composition.

Question 26 options:


Color


Function


Size


amount

Question 27 (2 points)

 








Why are ozone levels typically not reported in the winter months?

Question 27 options:


because of the differences in the sunlight between the summer and the winter


because of the temperatures


because of the needs of the environment


because of similarities between the different areas

Question 28 (2 points)

 








Why is the atmospheric lifetime of a greenhouse gas important?

Question 28 options:


because it helps to determine the long-term impact of the greenhouse gas


because it helps to determine the short-term impact of the greenhouse gas


because it helps to determine the amount of sunlight affected


because it helps to determine the amount of radiation affected

Question 29 (2 points)

 








What is the difference between PM2.5 and PM10 ?

Question 29 options:


The largest particles are more damaging to human health


The smaller particles are more damaging to human health


The smaller particles are less damaging to human health


The particles are essentially the same

Question 30 (2 points)

 








What is composition?

Question 30 options:


Description of the scientific method


Writing of steps in a chemical process


A book of instructions


A description of the identity and structure of the subunits that comprise a substance or material

Question 31 (2 points)

 








When energy is distributed in this noncontinuous way, it is said to be_______

Question 31 options:


magnified


quantized


strong


adequate

Question 32 (2 points)

 








______ is the leading producer of rare earth metals.

Question 32 options:


India


Brazil


France


China

Question 33 (2 points)

 








What is the most energetic UV fraction

Question 33 options:


UV-A light


UV-B light


UV-D light


UV-C light

Question 34 (2 points)

 








Which of the following is not a drawback of coal producing electricity?

Question 34 options:


the issues and dangers to workers who mine it


the environmental harm caused by coal mining, especially to waterways and habitats for a variety of species


the pollutants it releases when burned, such as mercury and sulfur dioxide


the salary of the workers

Question 35 (2 points)

 








Lithium is an alkali metal in ________ of the periodic table

Question 35 options:


Group 5


Group 4


Group 3


Group 1

Question 36 (2 points)

 








Ozone is considered a secondary pollutant.

Question 36 options:

TrueFalse

Question 37 (2 points)

 








How does a normal AA battery stores and conducts electrons into useful energy?

Question 37 options:


Take power and transfers it


positive ions flow into electrons that travel through the internal circuit


negative ions flow into the electrolyte, electrons travel through the external circuit to perform work, a separate chemical reaction occurs at the cathode, incoming electrons recombine with ions taken out of the electrolyte; circuit completed


positive ions flow into the electrolyte, electrons travel through the external circuit to perform work, a separate chemical reaction occurs at the cathode, incoming electrons recombine with ions taken out of the electrolyte; circuit completed

Question 38 (2 points)

 








What is the symbol showing the atomic number and the mass number for the isotope that has 26 protons and 30 neutrons, which is used in nuclear medicine?

Question 38 options:


26/56Fe


50/20Fe


13/30Fe


56/26Fe

Question 39 (2 points)

 








What is the molar mass of water (H20)?

Question 39 options:


19.0 g/mo


20 g/mol


16.0 g/mol


18.0 g/mol

Question 40 (2 points)

 








What is the difference between starch and cellulose?

Question 40 options:


Starch is not digestible by humans; in contrast, cellulose is


Starch is digestible by humans; in contrast, cellulose is not


Starch is large; cellulose is small


Starch is healthy, cellulose is not

Question 41 (2 points)

 








What is a Dobson unit?

Question 41 options:


measures the pollution in a column above a specific location on Earth


measures the ozone in a column above a specific location on Earth


measures the radiation in a column above a specific location on Earth


measures the amount of carbon in a column above a specific location on Earth

Question 42 (2 points)

 








Which is not an advantage of using natural gas to fuel vehicles?

Question 42 options:


lower amounts of pollutants released into the atmosphere such as VOCs


natural gas burns more cleanly and completely than gasoline


natural gas releases more energy per gram than gasoline


the combustion of natural gas produces carbon dioxide

Question 43 (2 points)

 








What is the name of the alkane CH3CH3?

Question 43 options:


Ethane


Butane


Decane


Nonane

Question 44 (2 points)

 








What are photons?

Question 44 options:


a way of conceptualizing matter as a particle


a way of conceptualizing light as a particle that has energy but no mass


a way of conceptualizing light as a particle that has weight but no mass


a way of conceptualizing gravity as a particle that has energy but no mass

Question 45 (2 points)

 








What are the smallest dimensions of the transistors used in current processors?

Question 45 options:


14 nm.


18 nm.


20 nm.


25 nm.

Question 46 (2 points)

 








What is the name of the alkane CH3(CH2)2CH3 ?

Question 46 options:


Ethane


Butane


Decane


Nonane

Question 47 (2 points)

 








Which of the following pollutants are not emitted by cars?

Question 47 options:


CO


particulate matter


NO


Boron

Question 48 (2 points)

 








What is the electrolyte in an alkaline cell?

Question 48 options:


Potassium nitrate


Potassium hydroxide


Nitrous oxide


Carbon nitrate

Question 49 (2 points)

 








Which of the following is not a factor of exposure?

Question 49 options:


Concentration in the air


Length of time


Rate of breathing


Pain tolerance

Question 50 (2 points)

 








Which of the following is not a way to produce hydrogen?

Question 50 options:


use heat energy to decompose water


electrolysis


High temperature water splitting


oxidation

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