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.
This is the best RU-vid 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.
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.
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
+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!
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.
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.
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!
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
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:)
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.
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.
"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.
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.
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.