Atomic Bomb importance The atomic bomb is clean energy, It is also called the atom bomb, The weapon with great explosive power that results from the sudden release of the energy upon the splitting...
Radiation pollution The radiation pollution is the increase of the amount of radiation in the environment, The sources of radiation pollution are natural sources and artificial sources, Natural sources are represented by natural radioactive...
The elements The scientists classified the elements according to their properties to facilitate their study and to find a relationship between the elements, and their chemical and physical properties.
