31 questions
In which type of reaction do two lighter nuclei combine to form one heavier one?
reduction
nuclear fission
nuclear fusion
neutralization
In the reaction given in the picture, the "X" represents:
an electron
an alpha particle
a neutron
xenon
What happens to a thorium-230 nucleus when it experiences radioactive decay and emits alpha radiation?
The overall energy will remain unchanged
The mass number will decrease by 4
The mass number will increase by 4
The mass number will not change
Balance the reaction given in the picture
Nuclear fusion occurs -
in nuclear power plants
in stars
in volcanos
in car engines
Which reaction illustrates fusion?
Radioactivity results from the decay of unstable:
electrons
heavy nuclei
stars
noble gases
In the reaction illustrated, what does "X" represent?
an alpha particle
a proton
a carbon atom
a xenon atom
Choose the item that balances the equation given in the picture
What was the secret code name for the building of the first atomic bomb?
Manhattan Project
D-day
911
Pearl Harbor
Which choice balances the pictured equations?
Which type of reaction releases the greatest amount of energy?
nuclear fusion
combustion
nuclear fission
neutralization
What is the name of the process in which the nucleus of an atom decays?
radioactivity
fusion
fission
cracking
A chain reaction is best described as -
a series of reactions that happen simultaneously and release energy
a series of reactions that happen over a long period of time with limited energy
a series of reactions that result in a salt and water being formed
a series of reactions that result in carbon dioxide being formed
Which of the following may be a result of exposure to radiation?
blindness
cancer
stubbornness
hearing loss
An alpha particle is essentially the nucleuw of which of the following elements?
plutonium
helium
uranium
xenon
What does the "92" in the illustration represent?
the mass number
the atomic number
the rational number
the radioactivity number
What does the given symbol represent?
alpha decay
beta emission
a boron atom
a reference to biology
Which of the following is the deadliest form of radiation?
gamma
beta positron emission
x-ray
UV
Which of the following best describes the nuclear reaction shown in the diagram?
Nuclear fission is occurring because a nucleus is being split into smaller nuclei
Nuclear fusion is occurring because many energetic neutrons are being emitted
nuclear cracking is occurring because the nucleus has been cracked
nuclear electronegativity is occurring because neutrons have been created
How many years old is a fossilized tree if it contains 25% of its original carbon-14? (half-life of carbon-14 = 5730 years)
11,460 years
1457.5 years
22,920 years
14,000 years
A form of technetium-99 has a half-life of approximately 6 hours. Which substance correctly completes the given equation?
A process in which a very heavy nucleus splits into more stable nuclei of intermediate mass is called:
radioactive decay
nuclear fission
nuclear fusion
combustion
Compared to chemical reactions, nuclear reactions:
produce proportionally far more energy
produce more vegetables
are easier to perform in our high school lab
have far more public support
For the most common types of radioactive decay, the order of least dangerous to most dangerous is
alpha, beta, gamma
gamma, alpha, beta
beta, alpha, gamma
alpha, gamma, beta
What is the problem commonly associated with nuclear power facilities?
it is difficult to dispose of wastes
reaction products contribute to acid rain
too many people compete to work there
the equipment is too inexpensive for construction
Which represents a fission reaction?
Which of the following is not a direct application of nuclear chemistry?
medical
energy production
radioactive dating
agriculture
Which of these medical applications of nuclear chemistry is used in the treatment of cancer?
tracers
radiation therapy
atomic bomb
power plant
Uranium isotopes have different:
atomic numbers
atomic masses
mole amounts
proton numbers
The combination of two atomic nuclei into one, accompanied by a release of energy, is called:
fission
fusion
radioactive
combustion