Double and Triple Bonds

[@TheMerai]

I really appreciate all of your hard work and effort, thank you so much for this valuable knowledge.

[@philipdinko4770]

By all standards your videos are down to earth for both kids and adults to understand. Thanks and more grease to your elbows

[@rogerwilliams6798]

My name is Eden S. Williams. I am almost 8 years old (on 15th May I will be 8). Me, Mum and Dad love your videos and we're learning so much! I am obsessed in the Periodic Table, that I even drew it on graph paper! My mum even bought a book showing the Periodic Table! Just remember, I love the Periodic Table!

[@rajseth4667]

Thanks Ian, you are an awesome teacher!

[@Iluminacion32]

Excellent and extraordinary video as all that I have seen so far created by this great master professor. Thanks so much Ian Stuart for teaching me and for you passion for knowledge! I can't wait to see which video is next! Julián Gómez Giraldo.

[@legrandadam9743]

You are a genious introducer!

[@ElaineStDenis]

very awesome information video.. thanks.

[@XMorbidFateX]

YES! Finally it makes sense!!!

[@UjjwalRane]

Beautifully animated and explained. Thanks! Can't wait to go to the next one now :-)

[@venubha5505]

awesome teaching, please don't make mistakes. I wish more videos, please make videos on DNA, Cells of molecular biology. you are a great master.

[@noahyup2973]

thank you.. its very very useful

[@OtterFan48]

Very useful for my Chemistry exam

[@Info_matters1by0]

lots of thoughts and conclusions are coming into my mind..thanx....respiration presentation is awsome..where is the 3.3 series..thnx again

[@SuperYoto123]

good job

[@rajaa6326]

omg !!! i m studing science tecknology now & i had to know these bases & now everything makes sense thanks to you thank you thank you a lot

[@saetainlatin]

I have a question? What would be the lewis structure on HNO3? according to the internet and my chemistry book, N bonds with O with double bonds but also with another oxygen in a single bond. How can Oxygen bond with just a single bond?

[@pppscooby]

Btw why can't 3 oxygen atoms bond, i have seen references to o3, just a bit confused

[@ibnourroumi]

Hi there. Nice informative animation. At the risk of coming across as a perfectionist, I would like to point out that there's minor but crucial error at 12:30. The glycine formula and the ball and stick model are missing two hydrogens.

[@rogerwilliams6798]

P. S. You make the best videos!

[@tannutannu2944]

thanku Sir for this vidio

[@deborahcolvin64]

what happens to the orbiting electrons when this bonding occurs?

[@rogerwilliams6798]

P.S.2 I know all the names of the "Unknown" elements! (Ununoctium, etc.) Thank you for dedicating the video as my birthday present! My mum and Dad are very proud and they thank you for taking the time to reply to me! I especially love the video "The Alphabet of the Universe" because I love the alphabet!

[@Ronaldino150]

Everything was amazing! Just one thing, at the end you show C2NO2H3, and label "glycine". Glycine is actually C2H5NO2, you just forgot the two hydrogens in the middle of the structure. But besides that, awesome video Ian.

[@rongarza9488]

Andrew Jauregui Good catch. With all the stuff Ian Stuart has presented one tiny error is not the end of the world. Just for the record, C2H3NO2 is nitroethene (at least that is what my search turned up, not that I'm the expert).

[@deborahcolvin64]

do these bonds occur automatically when atoms are exposed to each other?

[@amenamanpray]

Thanks for uploading this. Very helpful to me :)

[@jimnielsen6667]

I like your channel - great fun for science nerds like me. :-D However, you made an error at 7:14 when saying that CO2 makes up nearly 0.5% of the total atmospheric compostion. That would mean that there's 5,000 PPM of CO2 in the atmosphere, but there's only about 410 PPM - which means that CO2 makes up circa 0.041% of the total atmospheric composition. Having said that, I have a rather long question regarding CO2 and its supposed contribution to global warming: The total atmospheric content of CO2 has only increased by 80 PPM the last 47 years (from 330 PPM in 1970 to 410 PPM today) which means that today's entire atmospheric composition consists of only 0.008% more CO2 than in 1970. I know that the CO2 content itself has increased by almost 25%, but when you compare it to the total atmospheric composition, it's only an 80/1,000,000 increase (80 PPM out of 1,000,000 PPM). How can that make such huge temperature changes as it's being claimed? - If life is so fragile that it can be rocked to its foundations by a mere increase of 0.008% of CO2 in the entire atmospheric compostion, then wouldn't that make advanced life more or less impossible, considering that the CO2 level in the past has been as high as 7,000 PPM? Furthermore, doesn't heat radiate into space, which theoretically makes CO2 obsolete in regards to insulating the heat? - A good example could for instance be clear winter nights where it's always much colder than on overcast winter nights. The clouds are so thick that they can actually work as an insulator and thereby limit the heat radiation into space. However, even though clouds are usually millions of times thicker than the almost non-existent layer of CO2, and H2O gas moreover is, as far as my knowledge goes, at least just as stable as C02, clouds still let through a lot of heat that vanishes into space, which is easily observable by measuring the temperature right before sunset and again right before sunrise on two equally cloudy days, where it will obviously always be colder just before sunrise, given that no warmer/colder weather system interferes with the temperature. I'm not denying that CO2 could play a big role in global warming, cause I'm not an expert by any means. I just fail to see how such a tiny increase of CO2 in the total atmospheric composiiton can have such a huge impact on the temperature? - Please enlighten me if you can, and correct me if I'm wrong. Best regards.

[@sanjeevkutty1512]

very good but all of your video are being mixed so i feel little difficult to take all video some time few are missing example chemical equation part c (4.4) i leaned many things so my ambition is to became an scientist in chemistry i am studying 9th std i wish you see my commend

[@mommyset95]

how about carbon 2 hygrogan and 1 oxygen