Test V March 29
Chemistry 1360 with Theriot at University of North Texas
About this deck
By: Andrew Dzivi
Textbook:
Chemical Investigations for Chemistry for Changing Times
Created: 2012-03-28
Size: 57 flashcards
Views: 40
Textbook:
Chemical Investigations for Chemistry for Changing TimesCreated: 2012-03-28
Size: 57 flashcards
Views: 40
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What percentage of background radiation comes from natural sources?
a. 5%
b. 18%
c. 45%
d. 82%
a. 5%
b. 18%
c. 45%
d. 82%
d. 82%
The largest artificial source of background radiation is from
a. consumer products
b. fallout from nuclear tests
c. leaks from nuclear power plants
d. medical x-rays
a. consumer products
b. fallout from nuclear tests
c. leaks from nuclear power plants
d. medical x-rays
d. medical x-rays
lonizing radiation
a. can give one superpowers
b. comes from synthetic isotopes only
c. is energetic enough to ionize atoms and molecules
d. causes radioactive acids to form
a. can give one superpowers
b. comes from synthetic isotopes only
c. is energetic enough to ionize atoms and molecules
d. causes radioactive acids to form
c. is energetic enough to ionize atoms and molecules
The largest source of natural background radiation is
a. cosmic rays
b. isotopes in the body
c. radon
d. isotopes in rocks and soil
a. cosmic rays
b. isotopes in the body
c. radon
d. isotopes in rocks and soil
c. radon
Identify items 1-4 as one of the following:
a. alpha particle
b. beta particle
c. nucleon number
d. radioactivity
1. an electron
2. atomic mass 4 u
3. emission of particles and energy from a nucleus
4. number of protons and neutrons in an atoms
a. alpha particle
b. beta particle
c. nucleon number
d. radioactivity
1. an electron
2. atomic mass 4 u
3. emission of particles and energy from a nucleus
4. number of protons and neutrons in an atoms
1. b. beta particle
2. a. alpha particle
3. d. radioactivity
4. c. nucleon number
2. a. alpha particle
3. d. radioactivity
4. c. nucleon number
What is the mass and charge, respectively, of gamma radiation?
a. 0, -1
b. 0, 0
c. 0, +1
d. 4, +2
a. 0, -1
b. 0, 0
c. 0, +1
d. 4, +2
b. 0,0
What particle is needed to complete the following nuclear reaction?
9Be + ? --> 12C + 1n
4 6 0
a. alpha particle
b. beta particle
c. neutron
d. proton
9Be + ? --> 12C + 1n
4 6 0
a. alpha particle
b. beta particle
c. neutron
d. proton
a. alpha particle
A patient is given a 48-mg dose of technetium-99m (half-life 6.0 h) to treat a brain cancer. How much of it will remain in his body after 36 h?
a. 0.75 mg
b. 1.5 mg
c. 3.0 mg
d. 12 mg
a. 0.75 mg
b. 1.5 mg
c. 3.0 mg
d. 12 mg
a. 0.75
What is the half-life of silver-112 if a 10.0 g sample decays to 2.5 g in 12.4 h?
a. 1.6 h
b. 3.1 h
c. 6.2 h
d. 12.4 h
a. 1.6 h
b. 3.1 h
c. 6.2 h
d. 12.4 h
c. 6.2 h
Of a 64.0-g sample of strontium-90 produced by a nuclear explosion (half-life 28.5 y), what mass in grams would remain unchanged after 285 years?
a. 0.000g
b. 0.000625g
c. 0.00625g
d. 0.0625g
a. 0.000g
b. 0.000625g
c. 0.00625g
d. 0.0625g
d. 0.0625g
A bone had 30.0 ug of carbon-14 (half-life 5730 y) when the animal died and now has 3.75 ug of C-14. How old is the bone?
a. 11,460 y
b. 17,190 y
c. 22,920 y
d. 34,380 y
a. 11,460 y
b. 17,190 y
c. 22,920 y
d. 34,380 y
b. 17,190 y
About how old is a piece of wood from an aboriginal burial side that has a carbon-14 (half-life 5730 y) activity of 3.9 couns/min per gram of carbon? Assume that the activity of carbon-14 was 15.6 counts per minute per gram of carbon at the time of the burial
a. 4298 y
b. 5730 y
c. 11,460 y
d. 22,920 y
a. 4298 y
b. 5730 y
c. 11,460 y
d. 22,920 y
c. 11,460 y
What new isotope is formed in the following artificial transmutation?
14N + 1n --> 1 H + ?
17 0 1
a. carbon-12
b. carbon-14
c. nitrogen-15
d. oxygen-15
14N + 1n --> 1 H + ?
17 0 1
a. carbon-12
b. carbon-14
c. nitrogen-15
d. oxygen-15
b. carbon-14
What new isotope is formed in the following artificial transmutation?
9BE + 1H --> 4He + ?
4 1 2
a. boron-9
b. boron-10
c. lithium-6
d. lithium-7
9BE + 1H --> 4He + ?
4 1 2
a. boron-9
b. boron-10
c. lithium-6
d. lithium-7
c. lithium-6
What new isotope is formed in the following artificial transmutation?
239Pu + 4He --> 1n + ?
94 2 0
a. amercium-242
b. berkelium-242
c. curium-242
d. curium-234
239Pu + 4He --> 1n + ?
94 2 0
a. amercium-242
b. berkelium-242
c. curium-242
d. curium-234
c. curium-242
Iodine-131 is sometimes used to detecting leaks in underground pipes because
a. it has a short half-life
b. it is highly penetrating
c. it is nontoxic
d. its radiation is harmless
a. it has a short half-life
b. it is highly penetrating
c. it is nontoxic
d. its radiation is harmless
a. it has a short half-life
What type of radiation is used to irradiate foodstuffs to extend shelf life?
a. alpha
b. beta
c. gamma
d. microwave
a. alpha
b. beta
c. gamma
d. microwave
c. gamma
The isotope used in a PET scan must emit what type of radiation?
a. beta
b. gamma
c. positron
d. X-rays
a. beta
b. gamma
c. positron
d. X-rays
c. positron
Which of the following lists the most and least penetrating types of radiation? (most/least)
a. alpha/gama
b. beta/gamma
c. gamma/alpha
d. X-rays/beta
a. alpha/gama
b. beta/gamma
c. gamma/alpha
d. X-rays/beta
c. gamma/alpha
Which form of radioactivity could readily penetrate a centimeter of lead?
a. alpha
b. beta
c. gamma
d. all of these
a. alpha
b. beta
c. gamma
d. all of these
c. gamma
A Geiger counter registered 1850 counts/min of an unknown type of radiation. A piece of paper inserted between the source and the counter caused the reading to drop to about 45 counts/min. The radiation was mostly
a. alpha particles
b. beta particles
c. gamma rays
d. x-rays
a. alpha particles
b. beta particles
c. gamma rays
d. x-rays
a. alpha particles
Helium has a particularly high binding energy per nucleon, which means it
a. is especially unstable
b. more stable than H and Li
c. readily fused into larger nuclei
d. readily split into hydrogen-2
a. is especially unstable
b. more stable than H and Li
c. readily fused into larger nuclei
d. readily split into hydrogen-2
b. more stable than H and Li
Iron nuclei are
a. less stable than Kr nuclei
b. the most stable nuclei
c. readily fused into larger nuclei
d. readily split into smaller nuclei
a. less stable than Kr nuclei
b. the most stable nuclei
c. readily fused into larger nuclei
d. readily split into smaller nuclei
b. the most stable nuclei
Nuclei with nucleon numbers above that of iron are
a. all radioactive
b. increasingly stable
c. less stable than iron
d. readily split into smaller nuclei
a. all radioactive
b. increasingly stable
c. less stable than iron
d. readily split into smaller nuclei
c. less stable than iron
Which equation explains why the products of fission have less mass than the original substances?
a. E = hva
b. E = hv
c. E = mc2
d. PV = nRT
a. E = hva
b. E = hv
c. E = mc2
d. PV = nRT
c. E = mc2
Which subatomic particles are responsible for carrying on the chain reactions characteristic of nuclear fission?
a. beta particles
b. neutrons
c. positions
d. protons
a. beta particles
b. neutrons
c. positions
d. protons
b. neutrons
The isotope used in uranium fission reactions is
a. all uranium isotopes
b. uranium-232
c. uranium-235
d. uranium-238
a. all uranium isotopes
b. uranium-232
c. uranium-235
d. uranium-238
c. uranium-235
Plutonium for fission reactions is
a. made from uranium-238
b. made from neptunium ores
c. obtained from the minor planet Pluto
d. obtained from plutonium ores
a. made from uranium-238
b. made from neptunium ores
c. obtained from the minor planet Pluto
d. obtained from plutonium ores
a. made from uranium-238
Strontium-90 substitutes for calcium in bones because Sr and Ca
a. are in the same group of the periodic table
b. are in the same period of the periodic table
c. have identical electron configurations
d. have identical half-lives
a. are in the same group of the periodic table
b. are in the same period of the periodic table
c. have identical electron configurations
d. have identical half-lives
a. are in the same group of the periodic table
Which of the following radioisotopes from fallout is dangerous mainly because it is concentrated in the thyroid gland?
a. cesium-137
b. iodine-131
c. strontium-90
d. xenon-143
a. cesium-137
b. iodine-131
c. strontium-90
d. xenon-143
b. iodine-131
The process represented by the equation 2/1H + 2/1h -->4/2H + energy is called
a. alpha decay
b. artificial transmutation
c. fission
d. fusion
a. alpha decay
b. artificial transmutation
c. fission
d. fusion
d. fusion
Hydrogen-2 and hydrogen-3 fuse to form helium-4. The other product is a(n)
a. electron
b. neutron
c. positron
d. proton
a. electron
b. neutron
c. positron
d. proton
b. neutron
The regions of earth listed in order from the center out are..
core mantle crust
earths core is composed mainly of
iron
three elements account for more than 80% of the earths crust by atom percent. in decreasing order of abundance they are...
O, Si, H
All silicate minerals contain silicone and
oxygen
the mineral composed of pure silicone dioxide is
calcite
the silicate tetrahedron consist of one ____ atom at the center and _____ atoms at the corners
Si 4 0
match substance with structure
1.asbestos 1. double chains
2.mica 2. sheets
3. quarts 3. simple anions
4. zircon 4. three demensional array
1.asbestos 1. double chains
2.mica 2. sheets
3. quarts 3. simple anions
4. zircon 4. three demensional array
1 - double chains
2. - sheets
3. - three demensional array
4. - simple anions
2. - sheets
3. - three demensional array
4. - simple anions
in causing cancer, asbestos acts synergistically with
cigarette smoke
a material that is hard and durable but brittle is
ceramic
the main ingredients of ordinary glass are
sand, sodium, carbonate and limestone
cullet is...
broken glass used in the manufacture of new glass
the main ingredients of ordinary cement are
clay and limestone
the metal most likely to be found in a free element is
copper
when copper is produced from Cu2S the by-product is
SO2
Bronze is an alloy of Cu and
Sn
the raw materials for the best furnace production of iron are iron ore,
coke, and limestone
what metal typically is alloyed with iron to make stainless steel
chromium
aluminum is obtained from its ore by reduction using
electrolysis
bauxite is impure
Al2O3
Which kind of material is the largest component of the garbage we put in landfills
paper
the three R's of garbage are...
reuse, reduce, recycle
About this deck
By: Andrew Dzivi
Textbook: Chemical Investigations for Chemistry for Changing Times
Created: 2012-03-28
Size: 57 flashcards
Views: 40
Textbook:
Chemical Investigations for Chemistry for Changing TimesCreated: 2012-03-28
Size: 57 flashcards
Views: 40
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
Kathy