Unit test

Although i studied for the test the whole week and understood the terminology and the mathematical side of it, i did poorly on the test next time i might look on quizlet for more practice. I have put links down below of what i would think are helpful.

https://quizlet.com/
http://www.visionlearning.com/en/library/Chemistry/1/Chemical-Bonding/55
https://en.wikipedia.org/wiki/Covalent_bond
http://chemwiki.ucdavis.edu/Core/Theoretical_Chemistry/Chemical_Bonding/Lewis_Theory_of_Bonding
http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch8/lewis.html
https://www.khanacademy.org/science/chemistry/chemical-bonds/copy-of-dot-structures/v/drawing-dot-structures