Uploaded February 2017 | Updated September 2026, 1 hour ago
Mr. Key introduces Linus Pauling and how his electronegativity values have lead to a better understanding of the bond. He also works through how EN calculations are used to determine the nature of the bond between two elements.
Please note that all questions, comments and critiques are welcome. However, because the primary purpose of these videos is educational for students/educators, the comments are moderated. Any comments that are deemed abusive, inappropriate, or unrelated to the topic matter will not be posted and the user potentially blocked.
Mr. Key introduces Linus Pauling and how his electronegativity values have lead to a better understanding of the bond. He also works through how EN calculations are used to determine the nature of the bond between two elements.
Please note that all questions, comments and critiques are welcome. However, because the primary purpose of these videos is educational for students/educators, the comments are moderated. Any comments that are deemed abusive, inappropriate, or unrelated to the topic matter will not be posted and the user potentially blocked.






![Le Chateliers Principle and Qc
NEW FOR 2020! (Again, thanks to my students for yet again correcting my mistakes!)
In this video, @JFR Science s Mr. Key explains:
1. Reaction Quotient (Qc).
2. Le Chateliers Principle
3. Chemical equilibrium response to changes in [ ], T and P (due to changes in volume).
4. Impact of catalysts and inert gases on equilibrium systems.
Please note that the primary purpose of these videos is educational for students/educators. While all feedback, both positive and...hmmm...constructive, is appreciated I do not have the time to moderate or respond to all comments. As a result, comments on these videos have been disabled at least for the near future. Le Chateliers Principle and Qc](https://i.ytimg.com/vi/Q3nafNI5uIk/mqdefault.jpg)



