AQA A-Level Chemistry - Bonding
ฝัง
- เผยแพร่เมื่อ 16 พ.ค. 2015
- This video runs through the Bonding topic from Unit 1 of the AS Spec.
It doesn't contain any intermolecular forces or shapes of molecules, they can be found here:
IMF - • AQA A-Level Chemistry ...
Shapes - • AQA A-Level Chemistry ...
'Don't just panic and... die' - Mr Rintoul 2015
Tbh wouldn’t mind someone dying if it meant exams were cancelled
Careful what you wish for 16k people died from corona🤣
@@kaziam4318 well this comment aged well
@@georgia3123 it really did 😂😂😂
@@Zen_Zen_Zense 😂😂
Got the exam tomorrow and just sat here watching absolutely every video I can before bed , theses videos are life savers !
Lol exactly the same! Haha
what happened to you now???
@@hafsamohamoud5591 lmao u really messaging them 4 years later dw a level's will be finee
@@user-lo3er3th8g what did u get then
Omg same 😭mocks tomorrow
Lifesaver, even 5 years later! I liked your "speedrun" through the exam haha
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
OOOH RINTOUL WE LOVE YOU
***** Thanks haha!
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
OOOH RINTOUL WE LOVE YOU!
:D just following the trend
+London girl Tasty song.
Lol xD
NerdyGirl, freak u
lol
Saving my life for my mock exams! So easy to understand!
+geeorgiaahxo I'm very glad :)
In many past paper questions, when you have to draw an example of metallic bonding, the markscheme says the amount of delocalised electrons you draw has to correspond to the amount of ions you draw and the charges on the ions to get the full marks, so for example, if you draw 6 Mg 2+ ions in a metallic structure, you need to draw 12 e-'s in the "Sea" of electrons to get full marks, I've lost marks in mocks because of this before
sorry for my stupid question, I'll start a levels this September so I am just getting ready for it. why 12 e-??? 🙈 is it because is 2+ so is 6 x 2? but why is 2+? because Mg is 2+??? thank you
+Sofi Paez Amaya Yeah, when magnesium forms ions, it loses 2 (negatively charged) electrons and as a result has a 2+ positive charge. This means every magnesium ion contributes 2 electrons to the "sea" of electrons involved in metallic bonding, so if there are 6 ions, there will be 12 electrons in this sea
TheSeppukiri thank you very very much really I feel really relive right now, I understood
@@sofipaezamaya8798 its been 6 years but how did your alevels go?
@@liebafatima they always disappear for some reason bro
8 years later and ur still the best
Omg you are amazing at this if only you were in our sixth form as our Chem teacher ! WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
OOOH RINTOUL WE LOVE YOU! Hell yh
My first time watching your video and have to say it was super helpful. You don't know how many grades you saved by going through not just the concepts but the practice qns as well. Thank you so much for these!!
so grateful for these videos, im finally starting to get A's in my chem tests 2 months into the course. thank you so much
+Bethany “Beth” Liston Well done! And thanks for watching!
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
OOOH RINTOUL WE LOVE YOU!!!
+mehru nisa Love a cheeky song.
Thank you so much honestly you're saving my chemistry A-level. You've inspired me so much to even start my own channel on biology A-level for AQA.
This was the one topic I needed help on so thank you! Also the fact you put example questions at the end was very helpful and would be good if you did that for all your videos from now on :)
Ooooooh, GOSH. You’re a lifesaver!!! Thank u so much, it’s 2 months until my chemistry mock exam and somehow I was actually not getting bondings at all, but after watching this vid, it all makes sense! Honestly, you made videos for every bloody hard topic from As &A2. I have no words, may god bless you!!!😹😭🙌
I'm in uni and these videos are helping me so much. Sitting a biotech course and have Chemistry papers I need to do, however I haven't done chem before. These videos are helping me understand much more clearly than what my lecturer could ever teach me.
I feel like his handwriting is similar to his accent
Is that weird?
omg true
yes .
Your videos are great! You explain things so eloquently, and you make things easy to understand. Despite the fact that I'm following Edexcel's specification, you've covered almost everything I needed to know in the videos I've seen so far. And your advice is just fantastic- 'don't die'. :') Thanks for making these super helpful videos!
+Dalia Deak That's great to know :) well done for getting through them!
Can I just say you're saving my life and these videos couldn't be any better omg. There's a special place in heaven for you Sir.
This video came up on my feed and I thought for a moment you'd posted a new video.
Hope you're having a good life man!
THIS IS THE BEST BONDING VIDEO IVE EVER WATCHED I JUST LEARNT SM WTH!
you are a life saver man!
just started a levels and your videos have been so helpful
I'm in love with these vids!!! I have been studying since 2 hours !!! Thanks to E Rintoul !!
Massive help, always appreciated!
your classes are so interesting, thanking for these videos!!
keep up with the videos man. Cant thank you enough for the help here, you explain it really easily and well.
***** I'm really glad they help!
'They like to refer to these as crystal structures so if you see the word crystal don't panic and.. die'
Clara Fitzgerald Haha. Take my advice - don't die.
you have honestly saved my life
This dude is so funny, I was laughing the whole way through I forgot I was even studying 😂😭
Thank you so much!! It's really helpful! so much better than my a level chemistry teacher:D
+Niki Lam I'm glad to be of some help!
Thank you, my exam board is OCR and i find your videos very helpful
Easy peasy thanks, pretty much GCSE recap like you said.
Boro Jen xX I don't lie!
Tysm for all of this help suring the pandemic!! Hope u and everyone are keeping well :)
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
OOOH RINTOUL WE LOVE YOU!!!
Your videos are still going strong man!
+ExperiencedPanda Catchy!
hey, i wanted to ask you what software you are using? and also how are you writing these notes, what device are you using ? eg what laptop, or tablet etc. and what prgram are you writing it on
Thankyou sir, but i really wish you could go through more pat papers like this. was really helpful
thankyou so much i had my chem test today and i couldn't believe half of it was past exam q's you've gone through!
+Foziah Syed Regardless of the fact that they may have used the actual questions, the repetition you see across papers is mad at times. Hopefully you've done well!
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
OOOH RINTOUL WE LOVE YOU!!!
You saved me on my test today
Thank you m8
+ANNIHILATOI2 Excellent!
thanks it was really helpful. you should go through exam questions at the end of the video for all topics. i really found them helpful
Nadeem Irfan Excellent!
@@MrERintoulwill you do that though? It really is helpful Mr Rentoul, I hope you do do the exam questions for all the topics, it would be a massive help
You have saved my life! Many thanks!
CogWerk No problem :)
Your videos' are fantastic, thank you. :)
After around 2 years wow. What do we still shout?
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
WE LOVE YOU RINTOUL, WE DO
OOOH RINTOUL WE LOVE YOU!
Great video!! Thank you very much for your effort
Hugo I. No problem, Hugo!
Honestly sir these videos are brilliant. You make me laugh too which is even better
"why have they given you four lines- how big you writin this?! COVA-anyway.." 😂
+iAmROMAN zOLANSKI (Anie) I do get a little carried away sometimes...
Thank you. Your a life saver!
Abena Achiampong No problem!
Oh my god. You are saving my life. Thank youuuuu
+Najma S Ace.
You're the best!!
You make it seem so easy but great video!
Uhm if I am not mistaken Aqa also requires you To know about ice as an example. Could you possible confirm this sir as ice has definitely been used in a past paper question. Thanks in advance.
Wow thanks a lot these videos are so helpful
Oh yeah if I am also not mistaken do we not also need to refer to sodium chloride as having 6,6 coordination or something to this effect. I may be completely wrong about the ice statement and this but could you just confirm this please. Thanks again.
If its a 2 marker asking you what makes Al a better electric conductivity than Na, is it because of more electrons given out per ion thus there are more electrons passing the charge?
Great lecture! Keep it up sir
idk if i will get a reply but at 20:10 how do you assume that there is a loan pair that can be donated and how do you know where it is coming from? thanks
for question 5c. does it matter how many delocalised electrons i draw?
thank god...every other video was made by indians with the biggest indian accents in the world.... i can actually make out what is being said.... you brought back my hope for humanity
I ❤ your teaching. Thanks 👍 alot
When showing how the metallic bonding of 6 aluminium atoms, do you have to draw 18 electrons? As you only showed a few electrons here and there.
Do you have a video on Sigma and Pi bonds?
26:05 you mention weak vdw forcxes for iodine, but its boiling point is 184 degrees, so how does it vaporise under light heat?
You are such a legend
Are these videos suitable for edexcel?
I usually study from allery tutors but he doesn't go deep into the covalent character, are there differences between this board and edexcel?
'Just dont panic and die 'lmao
Hahaha thanks for such informative videos E Rintoul
Hi sir, where did you find the exam questions by topic?
In terms of the going through past papers, i'm going to assume you won't be able to do a chem 1 before the exam(this friday)? If so, thats completely fine, i respect the fact it comes out of your own time to make these vids, and you're making them for free :) Thanks for the video, bonding is probably my weakest point in chem 1 ^^
TEHCoRRuPT3R I'm still looking to get a CHEM 1 done before Friday! Plan is to get it done tomorrow evening...
I love you dude for these video thank you so much!!!!! like!!!! sub!!!!
+Ray Vanhem Boom. Thanks a bunch.
Hey ! This is really helpful, I was just wondering if you could make more videos like this covering other AS topics from new specification. Appreciate you help :)
+Parvisha Ramesh They're coming!
Could you explain why the Mg2+ and 02- has a high melting point ? I kind of got a bit confused. :-(
Probably dont need it any more but because it had ionic bonding between each other, and opposite ions attract.
The mcqs of chemical bonding are pretty tough hope you will focus on that someday .
1:42, if difference in electronegativity is between 0-0.4 non polar,... generally above 1.8 difference leads to ionic bonding
Can you also do a video on electronegativity?
Do you do a downloadable podcast?/ could you do a podcast?
Would it be correct to say simple molecule instead of covalent molecules
So just to be clear, why is silicon macromolecular? And isnt silicon dioxide (sand) macromolecular? Video is very helpful so far btw! Watching to stay on top of the A Level syllabus
is this helpful for CAIE as well??
pls answer me
Omg I owe you my Chemistry A Level...
DNJRDN The work you've put in is your hard work - but thank you for the kind words :)
You're the GOAT
THANK YOU!
Mohammed D No problem!
hi can you tell me how nitrogen has 2 spare electrons?
what is the initial difference between knowing if it has a high melting point or high boiling point?
+Yas K Generally speaking, it depends on the state of the substance at room temperature. We probably aren't as bothered about metals having a high boiling point as they are solid at room temperature and so we have to melt them before we get to that stage. Do you get me?
tysm!
Please can you explain hybridisation sp2 ,sp3
THANK LAAAAAWWWDDD FOR THIS !!
Just a past paper question confused me. Why is this (Alcl4-)
Aluminium chloride 4minus ion A covalent it should be ionic right
Abz Abzy That's a bit of a strange example in that in this case, the difference in electronegativity means that it is in fact covalent, not ionic. What paper was it from?
GREAT VIDEOS FOR REAL but for 4 (d) , if I put strong electrostatic attraction between oppositely charged electrons and ions , would I get it correct ?
+live life If you are referring to the magnesium oxide question then NO. NEVER. DON'T DO IT. The attraction is NOT between the ions and electrons. If the question was asking about the crystal type in magnesium then yes, your answer would be great. BUT IT ISN'T. You must talk about the electrostatic attraction between oppositely charged ions (you are fine to say positive and negative ions). That make sense?
+E Rintoul Yes it do thanks for the response
Why are there only 6 electrons if each aluminium ion looses 3? 31:16
For 5d, cant you mention nuclear charge? It increases across the period.
Thanks so much for this video..
What would you suggest in the last week of prep.. what should students be doing
moneyhoneyhoney err... revising?
moneyhoneyhoney See my comment...
Boby Gandhi Classic Gandhi.
Your handwriting is so nice
I recently had a question on the covalent bonding and electrical conductivity saying it was one of the strongest substances an an excellent electrical conductor called Grapon? I thought it might be due to the lack of bonding between layers but surely that would mean it wasn't as strong?
+TheFroggyhop They like giving cheeky new things that have the general structure of graphite, but are often just a single layer. If it has a single layer, it only contains covalent bonds and is therefore strong as. Does that make sense?
Yes thank you :)
Thank you.
+Astrex No worries.
You see when in the case of co ordinate bonding, when Nitrogen gave both of its electrons to hydrogen, what happened to the electron hydrogen already had?
It didn't have any hence why nitrogen donated 2
Do we ever need to know if one bonding/ crystal is stronger than another (eg why is ionic weaker than covalent - if it is at all) ?
Yes you do
For question 3c is nitrogen and oxygen being two non metals a good answer too?
+Ama Gunasekara Nope. It is the fact that they are both non-metals which give them more similar electronegativity values.
for 7b the graphite question, isn't it the intermolecular forces you break when a substance is heated not the covalent bond. basically what I'm asking is, aren't the Vasn Der Waals forces responsible for the higher melting point?
If Van der Waal was responsible for melting point, graphite would have a lower melting point as only little energy would be required to break it. The fact that strong covalent bonds b/w carbon atoms in the layers is what make it require lot of energy to overcome resulting in a higher melting point
casually watching the video when i burst out laughing at 23:52 XDDD
Lalz Boo You're the second person to say that now!
Are all these videos new spec?
Do you know where i can find past papers by topic?
Physics and maths tutor and the aqa website
Hey, I don't know if I'm right or not, but on the NH4+ ion, you forgot to draw the arrow on the bond to show that electrons come from the N and are donated to the H+
Boro Jen xX I guess so, but I think in terms of the bonds, there's no problem not having the arrow there...
E Rintoul Actually there is sir.
@@blazeit4905 my guy