Intermolecular Forces

Feel the force with intermolecular forces. This video looks at van der waals, dipole dipole and hydrogen bonding complete with a bowl of water?! Intrigued? Take a look for yourself.

[@devsaranga]

I used to recall the term Hydrogen FONds to remember the elements involved better. The letters in caps represent the elements. :)

[@AlleryChemistry]

Sounds good! I love memory aids like this! Really helps others too so thanks for that.

[@devsaranga]

Allery Chemistry You're welcome. Great videos. :)

[@iqrahussain323]

Thankyou for this

[@farihalubaba0810]

This is the best KZbin channel for any kind of help in Chemistry! I just hope my AS goes just as good as you explained these bonding! Thank you so much.

[@AlleryChemistry]

Thanks very much! Just pleased the videos are helping you, that's what they are there for. Hope your exam goes well, my fingers are crossed for you!

[@farihalubaba0810]

You're welcome. Did you make any video on hybridisation? I can't find it. It would be great if you explain hybridisation too. If there is already a video on hybridisation then please attach the link here. Would be a great help! TIA.

[@AlleryChemistry]

I don't have anything on hybridisation. Do you do CIE by any chance?

[@farihalubaba0810]

Yes. I am going to take my AS level examinations as a CIE candidate in May/June session 2017.

[@AlleryChemistry]

CIE is the only exam board that does hybridisation as far as I am aware. Good luck with your course!

[@tang3151]

This is better than reading the heavy coursebooks. My cambridge AS chemistry exam is in about 2 hours. Thank you for these videos 👏

[@cheyennemenda18]

I don't think you realise how much you have helped me with your chemistry videos. They are all very useful and you mention all the key points and your explanations are understandable. Thank you so much and I will definitely be watching your videos through out my chemistry A levels. Thanks again

[@rumayakhatun6441]

You deserve to get famous. You are really good! Your lectures helped me alot thanks!😀

[@nyejubilee2787]

thank you so much Mr Chris Harris, this was very helpful

[@user12345y]

This is awesome 👏🙌. Understood every bit of it 🙊.thanks for these videos sir !

[@saimachoudhury4951]

Omg that was so clear. Thank you so much!!!

[@caitlin4938]

Cheers for these, great to watch when i need to review stuff! :)

[@AlleryChemistry]

+Caitlin Brill! Please you find it useful. I have daily multi choice questions for AS Chem on twitter follow @allerytutors to get them. Good luck with your course!

[@chrisaryslastofthedragonse8801]

Thanks for the Video, I have always found this topic a bit confusing. Thanks for clearing it up!!

[@mattyd1392]

That's a class way to describe vander waals forces

[@xFifaSkillzHdx]

Thank you for these videos they really help

[@AlleryChemistry]

+Mike Myers Thanks! Groovy name too! :-)

[@JamesMartin-pz3mb]

You're such a bloke. Thanks for the videos bru

[@sea5205]

Great video, thanks a lot!

[@katarinawu9893]

Thank you so much! this helps me a lot!!

[@AlleryChemistry]

Brilliant! Hope the prop helped when explaining Van der Waals. It's a difficult one to explain.

[@rubezmiaz9715]

For the year 2 section of chemistry, my sister was not able to find some of the chemistry topics. Would you please able to make some videos on the last few topics, please. Your a great lecturer, i appreciate what you have done so far, Well Done!

[@GorillaFlakes]

AMAZING video

[@derevenskijparenj]

Thank you for the great videos which help me to revise for my AS exams, i have already spread the word about your brilliant youtube videos. P.S. in Topic 2 New AS Edexcel edition there is no video on solubility which is part of the specification, it would be great if you make one.

[@AlleryChemistry]

You're welcome! Thanks for sharing the videos it all helps to improve understanding of chemistry. I will look into solubility one. Releasing Edexcel revision videos next week so you will see solubility on these ones.

[@MegaJamjam69]

I finally get it, thank you so much

[@AlleryChemistry]

+James Smith no problem!

[@sabah6281]

This is a great video! Just wondering, why do the London forces increase depending on Mr of the molecule? Is there a reason why it is not electron/proton number? I'm aware this is an old video but hope u see this! thanks

[@jayafron5067]

Am I right in thinking that any molecule has London forces?

[@MsDestiny2002]

thank you very much!

[@ajeats9321]

Thank You so much!!!!!

[@miraclemuokebe]

This was so helpful!

[@AlleryChemistry]

You're welcome!

[@princess_naadirah9900]

Thank you 😊

[@talhariyaz1731]

hi, i love your videos. so clear and easy to understand! i read the PH3 has got permanent dipole dipole imf, can u pls explain why

[@johnwallace1950]

How do we know CH4 has only van der Waals forces? like what are the indicators that differentiates the type of bonding with types of compounds?

[@AlleryChemistry]

Yes molecules that only have VDW forces are those with very little or no polar bonds. CH4 has no polar bonds significant enough to form any other type of intermolecular force.

[@dickmercs3852]

We need more people like you. Thank you sir

[@keetanjohal3559]

No way a ripoff nick mercs is commenting lmao W name

[@yusra1429]

How do you know which molecules have a permanent dipole?

[@jokl3y207]

Thanks big help, hate how many names London forces have, very annoying

[@dions.8733]

Hi, thanks so much for this video. you save the chemical day! just had a small doubt. since the basis of a london force is in the temporariness of its dipole interaction, how can there be london forces in polar molecules? like for instance, in H2O. every bond is polar and has a permanent dipole, so how is it supposed to facilitate *temporary* dipole induction..? idk if that makes sense, but pls let me know. Thanks:)

[@dionapril9631]

Does this mean that a compound or element that has hydrogen bonding automatically has the other two? Thank you for your videos I'm writing my AS this May, I'm so scared.

[@cacbmrghanjera6015]

Is it possible to draw two hydrogen bonding in two water molecules?? Reason please

[@ebony994]

is this enough detail?

[@jadesrandom8253]

I don't get how do you tell whether it has a delta+ or delta- charge

[@AlleryChemistry]

Electronegative elements are negative. E.g. Cl F O etc..

[@keshyan7082]

Hi +Allery Chemistry I'm slightly confused, the red box says 'The bigger the MR the bigger the the VDW force' Do you mean IMF instead of VDW force?

[@Iconic-football2616]

Mass per mole of the atom

[@ramshahali4750]

How do you know they have a permanent dipole? Is it got to do with the electronegativities ??

[@AlleryChemistry]

+Ramshah ali Yes it is. If you have a reasonable sized electronegativity difference then you have a dipole. Hope this helps!

[@ramshahali4750]

+A Level Chemistry Revision Videos by Allery Tutors yes thank you!!!!

[@billyrigg7505]

Hi, do you have a video explaining hydrogen bonding and the elements between which it can occur?

[@AlleryChemistry]

Yes. Here it is kzbin.info/www/bejne/rYbdnZSAoKiLqNk&app=desktop

[@ryon3989]

Allery Chemistry savage

[@0seunggf]

Are Van Der Waals force and London Forces the same thing? Or is Van Der Waals = London Force + Induced dipole interaction

[@rosaalnds]

sir , what exactly is the difference between van der waal forces and dipole-dipole forces , because they look the same in a way. thanks

[@lewis2013]

When showing bonding between water molecules there needs to be 180° around the hydrogen involved in bonding. H2O------H--------OH. The molecules should also be bent/ non-linear.

[@mohammadkefah4123]

"The bigger the Mr the bigger the VDW force" shouldn't it be "The greater the number of protons the greater the VDW force"? I really dont get how the Mr of molecules can affect VDW forces.. Only increasing the protons would increase the number of electrons Please correct me if i am wrong. Thanks for taking the effort to make these wonderful vids.

[@AlleryChemistry]

VDW is to do with electron clouds not protons. The exam boards will accept Mr/Ar but branching on chains will weaken the VDW force between molecules with similar Mr.

[@salmanqureshi3361]

Surely hydrogen bonds should be called hydrogen forces, as they are intermolecular forces?

[@KatherinePierce_81]

What does Mr stands for???

[@AlleryChemistry]

It just means the relative molecular mass of a substance

[@ebony994]

molecular mass

[@PabloEscobar-mm2xn]

Wappuuuuuuu

[@ksi800]

london force can exist between h-cl and h-cl? or can it only be in diatomic molecules?

[@AlleryChemistry]

Yes London forces exist between HCl molecules. There are also Dipole-Dipole interactions too.

[@ksi800]

Allery Chemistry London force can always cause a pd -pd bonds?

[@AlleryChemistry]

No. London forces are induced dipole not permanent.

[@tayyiba.c]

11:44 CONSTANT VIGILANCE

[@Youssef-xv6dd]

Is this the new OCR specification?

[@AlleryChemistry]

+Youssef Boulal Yes this is suitable for new OCR spec.

[@kinarast]

Inaff