A very important topic this year for SPM Students.

The topic will cover Radioactive Substance,  Nuclear Energy and Handling the Radioactive Substances. What are radioactive substances are substances which have unstable nucleus. The nuclear emits energy to become stable.  There are 3 types of radiation Alpha, beta and gamma radiation

Alpha Radiation: Consist of Helium Nuclei, positively charge,move slowly, low penetrating power and high ionization
Beta Radiation: Consist of Electron, negative charge, move very fast, high penetration power and low ionization
Gamma Ray: Electromagnetic waves, Neutral charge, move speed of light, very high penetration power and low ionization

Production of Nuclear Energy

Nuclear Fission happens when neutron bombard the nucleus of uranium – 235. This is done through a nuclear reactor. The  nucleus absorbs neutron and become more unstable. Then it divides again. This process releases nuclear energy. Nuclear  Fusion happens when lighter atoms collided to form a bigger atom. The fusion of nuclei accompanied with tremendous amount of energy

example:
2 hydrogen collided to form Helium. This process always happens in the sun?

May 24th by AdminTipsexam