A Nuclear Reaction

14:57:03, 16 Januari 2018 Himawari

MadNews Edisi 14/IX/2017-2018 - A nuclear reaction occurs whenever the energy or number of neutrons or protons in a nucleus changes. Just as in chemical reactions, some nuclear reactions occur with a release of energy while others occur only when energy is added to a nucleus.

One form of nuclear reaction is the emission of particles by radioactive nuclei. The reaction releases excess energy in the form of the kinetic energy of the emitted particles. Nuclear reactions can be described by words, diagrams, or equations. The symbols used for the nuclei in nuclear equations make the calculation of atomic number and mass number in nuclear reactions simpler. For the example,

The total number of nuclear particles stays the same during the reaction, so the sum superscripts on each side must be equal : 18 = 17+1. The total charge also is conserved, so the sum of the superscripts on each side must be equal : 9 = 8+1.

For this week, the 12th graders of science pathway were working on nuclear equations project in pairs. Students showed high enthusiasm to finish this project. Example of the finish project is show on the picture. (Enni Nuraieni)


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