Unit 2 : Nuclear Energy

Question 1

also called atomic energy, energy that is released in significant amounts in processes that affect atomic nuclei, the dense cores of atoms.

Answer 1

Nuclear energy

Question 2

It is a phenomenon that occurs in a number of substances.

Answer 2

Radioactivity

Question 3

atom with a specific number of protons in its nucleus

Answer 3

Nuclide

Question 4

proton or neutron, especially as part of an atomic nucleus

Answer 4

Nucleon

Question 5

naturally or artificially created isotope having an unstable nucleus
that decays, emitting alpha, beta, or gamma rays until stability is reached

Answer 5

Unstable isotope

Question 6

unstable isotope that undergoes nuclear decay

Answer 6

Radionuclide

Question 7

Unstable isotopes decompose (decay) by a process referred to as

Answer 7

Radioactivity

Question 8

is the minimum energy required to disassemble a system of particles into separate parts

Answer 8

Nuclear Binding

Question 9

the change of one element to another as a result of bombardment of
high energy particles (e.g. neutrons, electrons, and other nuclei)

Answer 9

Nuclear Transmutation

Question 10

a nuclear reaction that releases energy as a result of splitting of large nuclei into smaller ones. Nuclear power pants use fission to split U-235 to produce energy.

Answer 10

Nuclear Fission

Question 11

minimum mass required to sustain a chain reaction.

Answer 11

Critical mass

Question 12

a nuclear reaction that releases energy as a result of the union of smaller nuclei to form larger ones. It occurs in the upper atmosphere and outer space; reactions that power the sun and stars.

Answer 12

Nuclear Fusion