Nuclear Chemistry Concepts Explored

What is binding energy?

• The energy required to form a nucleus from its constituent parts.

• The energy required to dismantle a nucleus into its constituent parts.

• The energy required to split a nucleus into two smaller nuclei.

• The energy required to fuse two nuclei together.

Which statement is true about the energy given off when a nucleus is formed?

• It is more than the energy required to dismantle the nucleus.

• It is less than the energy required to dismantle the nucleus.

• It is equal to the energy required to dismantle the nucleus.

• It is unrelated to the energy required to dismantle the nucleus.

What is the difference between fission and fusion?

• Fission is the splitting of a nucleus, while fusion is the joining of two nuclei.

• Fission and fusion both involve the joining of two nuclei.

• Fission and fusion both involve the splitting of a nucleus.

• Fission is the joining of two nuclei, while fusion is the splitting of a nucleus.

What tends to happen to nuclei with high energy states?

• They tend to be stable.

• They tend to be unstable.

• They tend to fuse together.

• They tend to absorb energy.

Which isotope is more stable: americium-241 or uranium-235?

• Both are equally stable

• Americium-241

• Uranium-235

• Neither is stable

What is the half-life of uranium-235?

• 92 years

• 241 years

• 703.8 million years

• 141 years

What is the mass defect in the fission of uranium-235?

• 0.1860439 amu

• 0.7915282053 grams

• 0.2350439 amu

• 0.439 amu

How much energy is given off per kilogram of uranium-235 during fission?

• 7.12 x 10^11 joules

• 7.12 x 10^12 joules

• 7.12 x 10^14 joules

• 7.12 x 10^13 joules

What is a chain reaction in the context of nuclear fission?

• A reaction where the nucleus remains unchanged.

• A reaction where one fission event causes multiple subsequent fission events.

• A reaction where energy is absorbed by the nucleus.

• A reaction where two nuclei fuse together.

Why is uranium-235 significant in nuclear reactors and weapons?

• It can be easily found in nature.

• It has a very short half-life.

• It does not release any energy during fission.

• It can be induced to undergo fission by bombarding it with a neutron.