Particles and Radiation Revision

1. The exchange particles that transmit the four fundamental interactions between particles. (5, 5)
6. The process of an electron taking in exactly the right quantity of energy to move to a higher energy level. (10)
7. The work done to accelerate an electron through a potential difference of 1V. (7, 4)
8. A group of elementary subatomic particles, consisting of electrons, muons and neutrinos. (6)
9. A proton or neutron. (7)

2. The minimum energy required to remove an electron from a metal’s surface. (4, 8)
3. unstable nuclei decay in an attempt to become (..) (6)
4. The minimum potential difference required to stop the highest kinetic energy electrons from leaving the metal plate in the photoelectric effect. (8, 9)
5. A force that acts between nucleons in a nucleus to keep it stable. It is attractive at distances of up to 3fm and repulsive at separations less than 0.5fm. (...) Force (6, 7)
10. A class of hadron that is made up of a quark and antiquark pair (5)

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