the periodic table: crash course chemistry #4 Published 11 years ago • 7.5M plays • Length 11:22 Download video MP4 Download video MP3 Similar videos 12:48 the electron: crash course chemistry #5 10:12 the nucleus: crash course chemistry #1 7:45 introduction to chemistry | atoms, compounds, and ions | chemistry | khan academy 18:49 general chemistry explained in 19 minutes 5:14 how to memorize the periodic table - easiest way possible (video 1)
