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Miscellaneous
Nuclear Reactions
Half-Life
Fission
Fusion
100

part of the atom involved in a normal chemical reaction

What is an electron

100

Constructive uses of Nuclear reactions

x-rays, treat cancers, generating heat and light

100
What is half-life
Average time it takes for half the amount of a radioactive element to decay
100
What is fission?
a nuclear reaction that invlolves the splitting of a heavy nucleus into a lighter nucleus.
100

What is fusion?

Two smaller nuclei combining to form a larger nucleus, releasing tremendous amounts of energy.

200

Part of the atom involved in a nuclear reaction.

nucleus

200
Three types of nuclear radiation
alpha, beta, gamma
200
Thorium-234 has a half-life of 24 days, started with 100 g how much is left after 48 days?
What is 25 grams
200
What are the benefits of fission?
huge amounts of energy; plenty of resource
200

Why isn't fusion used in power plants?

required temperatures are too high

300

Who discovered radiation

Becquerel

300
Least penetrating form of radiation
What is an alpha particle
300

The half life of Plutonium-239 is 24,110 years. How much of 100 g remains after 96,400 years?

What is 6.25 grams

300

How is nuclear fission energy harnessed in a nuclear power plant?

By boiling water to create steam which turns a turbine and generates electricity

300

Where does fusion occur naturally?

In the sun.

400

What isotope of uranium was found to be easily fissionable?

U-235

400

What are the reactants and products in a fission reaction?

A neutron and a fissionable isotope are reactants; more neutrons, smaller nuclei, and energy are the products

400
Radium-266 has a half life of 1599 years, how much of 15.0 mg is left after 6369 years.
What is 0.94 mg
400
What are the downsides of using fission as an energy source?
nuclear waste; danger of out-of-control chain reaction
400

Compare and contrast fission and fusion.

both release high amounts of energy; both are nuclear reactions (involve the nucleus); fission is "splitting" a nucleus, fusion is combining 2 smaller nuclei; fission happens in nuclear power plants and atomic bombs, fusion is only observed on the sun.