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 ...
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
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
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!!
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.
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!
@@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
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
+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!
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
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
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!
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 ^^
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 :)
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.
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?
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
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?
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
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?
+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?
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+
