Q.1.
In a nuclear reactor what absorbs fast moving neutrons?
Q.2.
The name for protons and neutrons in nuclear chemistry is____
Q.3.
In a nuclear reactor what slows down neutrons?
Q.4.
Energetic electron from decomposed neutron
Q.5.
Spontaneous emission from the nucleus of an atom
Q.6.
Emitted helium nucleus
Q.7.
High-energy photons emitted by a radioisotope
Q.8.
Particle of charge +1 and mass equal to that of an electron
Q.9.
Radiation detector that makes use of a gas-filled metal tube
Q.10.
In ___ _____reactions, small nuclei combine, producing a large nucleus and releasing large amounts of energy.
Q.11.
In a(n) ___________, particles released from one nuclear reaction collide with other particles and cause more nuclear reactions.
Q.12.
The conversion of an atom of one element to an atom of another element is called ___________.
Q.13.
After one ____________ of a radioactive element, half of the original radioactive material remains.
Q.14.
The three types of nuclear radiation are _______ radiation, _________radiation, and _____________ radiation.