上傳日期：2012年1月11日
Fermat's Little Theorem was observed by Fermat and proven by Euler, who generalized the theorem significantly. This theorem aids in dividing extremely large numbers and can aid in testing numbers to see if they are prime. For more advanced students, this theorem can be easily proven using basic group theory.
Prerequisites: To follow this video, you will want to first learn the basics of congruences.
Subject: Number Theory
Teacher: Michael Harrison
Artist: Katrina de Dios
![[圖]](https://courses.cs.washington.edu/courses/csep521/97au/notes/lect6-html/img059.GIF)
發佈時間：2014年4月8日
Ionic bonds are one of the 3 main types of intermolecular forces, along with covalent bonds and metallic bonds. Ionic bonds are very strong, due to powerful electrostatic attraction between opposite ions (a metallic cation and a nonmetallic anion). Many ionic compounds dissolve easily in water, however.
We show two examples of the formation of an ionic bond using Lewis dot structure notation.
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You can also learn more about ionic bonds and other chemistry topics at http://socratica.com
Written and Produced by Kimberly Hatch Harrison
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※ 編輯: ott 時間: 2016-01-18 17:55:01
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