Added: 2 years ago
From: khanacademy
Views: 89,194
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  • this man is a genius. thank you so much, youre the reason why im actually doing well in my honors chem class.

  • thank u 4 the download!!!!! now i can pass my science subject

  • you have a gift

  • THANK YOU SO MUCH!!!!!!!!!

  • lol bunch of falling sals xD

  • Very good vid but you should really have covered vapour pressure.

  • You're eloquent, amazing and have a really good sense of humor! haha I love your teaching method. Thanks for all the effort.

  • I think you should put a video up before this one talking about the similarities and differences between heat and temperature, a lot of people believe they are the same thing.

  • Bunch of falling salls hahaha nice explaining dude thanks alot.

    Grats from Egypt.

  • You should have made dH/q in different angles. But thanks anyway. ;)

  • #1 Between HF and HCl, which would be a stronger acid and why?

    #2 Wouldn't the Bose-Einstein condensate be classified as a 5th state of matter?

  • i wished i was able to take his class

  • @neal1666 this is his class

  • i wished i was able to take his class

  • "Enthalpy is a word that was introduced to confuse chemistry student", I totally agree Sal :D Why can't people just use simple words we are all know instead of making things seem so complicated?

  • @malaikaswm I must disagree with Sal on this one: Heat is a way of transfering ENERGY, systems do not have heat, systems have energy, so you could not and can't say you have a change in heat, because it does not make sense, since heat is just a way of transfering energy. And since ppl needed an easier way to say "oh now the rate of energy being added by heat is larger that it was before", they created enthalpy, and now they can just say "increase in enthalpy" instead of all that bs.

  • But I tottally agree with Sal with everything else xDD

  • A turbine under a stream of falling Sals? I think you may have accidentally solved the energy crisis...

  • Could you add subtitles so I can just watch these videos in class? Thank you.

  • absolutely fantastic !!!!! Can you please upload videos on pi bonds ??

  • You can find it in the chemistry playlist, on his website

  • i don't know what you do, or how you say it, but it just makes sense :) everytime. Thankyou!

  • you should open up a school not online cause i understand everything better my teacher cant teach as good as u

  • Awesome, thanks, a very good reminder for me and it will come in very handy for my teaching assignment :-)

  • It is nice to get a legimate conference on subject in Chemistry in some sort of English, even if there are various International regulatory groups

  • Comment removed

  • incorrect VSEPR structure for H2O

  • incorrect VSEPR structure of H2O

  • Thank You for making such a simple video about a complex subject. I wasn't sure if my students would like it, but they did...and a lot of them understood some things about bonding that they hadn't before. I also used the beginning myself for some 3rd grage students..used different colored markers on the white board..they drew as I did..they loved it. Thanks

  • Lol, a bunch of falling "Sals" move a turbine. I bet you can Sal, with sheer neuron force!

  • Enthalpy... hah! Chemistry is the king of non intuitive words for simple concepts.

  • Yayyyyyyyyyy. I Love you!!!!!!!!!

  • where's the BoseEinstein condensate?

  • lol, i think he needs quantum theory to explain that shit

  • Multiple times Sal explained, "Everyday states." It was correct to leave out plasma...

  • Tell that to the sun or the Aurora Borealis..... sorry I see the sun every day :) therefore its an everyday state... Plasma can be cold too did you know that?

  • That's really irrelevant for a video like this obviously directed towards people wanting to learn basic chemistry.

  • Comment removed

  • in the first 10 seconds he specifically says "at very high temperatures you get a 4th"

  • look up ultracold plasma

  • @TheoreticalPhysicss

    Thank you. Some people just don't listen.

  • yes, plasma is the most abundant form of matter in the universe

  • you forgot plasma as a state of matter

  • Sal did not forget, you just forgot to listen.

  • these are the basic state. And plasma is just free electron.

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