Nuclear Chemistry

Balance the equation:

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Which of the illustrations below represents a fission reaction?

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Which of the illustrations below represents a fusion reaction?

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In nuclear reactors, the role of control rods is to

• accelerate neutrons.

• absorb neutrons.

• slow down neutrons.

• absorb energy.

Elements that have the greatest binding energies per nucleon have atomic masses that are

• low.

• intermediate.

• high and even numbers.

• high and odd numbers.

All nuclear reactions affect the

• number of electrons.

• number of protons.

• number of neutrons.

• nucleus.

Which type of radiation can be stopped by a sheet of paper?

• alpha

• beta

• gamma

• delta

Carbon-14 has a half-life of 5715 years. If a sample of carbon-14 has an original mass of 10 g, the amount remaining at the end of 11 430 years will be

• 2.5 g.

• 5 g.

• 10 g.

• 50 g.

The decay of carbon-14 to nitrogen-14 is an example of

• beta emission.

• electron capture.

• positron emission.

• alpha decay.

The particles that are found in the nucleus of an atom are _

• neutrons and electrons

• electrons only

• protons and neutrons

• protons and electrons