AQA A-Level Chemistry - Organic Analysis
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- Опубліковано 1 чер 2014
- This video runs through the analytical techniques portion of the AQA Unit 2 spec.
It DOES NOT go into huge detail about the process of mass spectrometry and IR spectroscopy as this is not required for the exam!
Revision References
2 peaks m/z 3:50
Molecular ion peak 5:10
Mass spec Exam Question 6:45
IR Exam Question 1 13:03
IR Exam Question 2 16:35
You deserve a knighthood
yayvillee I'm up for that.
@@MrERintoul Sir Eliot Rintoul, if only you had a middle name, would have been fancier.
you all probably dont care but does any of you know a method to get back into an instagram account..?
I was dumb lost my account password. I would love any tricks you can offer me.
@Anders Zion Instablaster ;)
@Mohammed Wells thanks so much for your reply. I got to the site through google and Im waiting for the hacking stuff now.
Looks like it's gonna take a while so I will get back to you later with my results.
7:07 for larger alkenes, a quicker way to find out which alkene it is: formula is CnH2n. If n = 1, the relative formula mass would be 14. The question asks for an Mr of 42, so 42/14 = 3 so C3H6
I really appreciate your no-nonsense approach to teaching. Personally, I prefer this over the 5 lectures my teacher juiced out of this topic.
4:48 that made their way down..the..uhm..TUNNEL THING! Lol
Fatima Omer I have a way with words.
thank u it's nearly 5am and ur voice makes me happy :-)
I wish I could pay you :') best teacher ever!!
Allie Manning he does have a PayPal.
silence lmao
Lmao
thank you so much for these videos, i wouldnt have had a chance to learn the whole of unit 2 if it wasn't for this. really do hope i pass
On the spec it says 'understand the link between aborption of infrared radiation by bonds in CO2, methane and water vapour and global warming' could you explain this please?
you're better than both my chemistry teachers at school thank you so much
sophia - I'm sure I'm not - but thanks anyhow!
all your videos have been so helpful throughtout revision, thankyou very much!!
how on earth Harry Kane is getting an MBE and you're not?
even rashford got one hahah
Well done. This way of explaining things with exam technique will tick of one piece to the puzzle. :)
THESE VIDEOS ARE AMAZING!! They've helped me out so much! Thank you, you're incredible! 🙌🏼😊
good luck for the exam
THANK YOU VERY MUCH.... the past paper questions are really helpful...they guide us to the thought process we should be doing to get the right answer
Final recap before the exam - you, good sir, are my new best friend! Many drinks are on me…or they would be if I knew who you were, or where you lived! By the way…has anyone ever told you your voice is...hmm…lovely doesn’t quite hit the spot…but it’s close xD
Thanks for the video, it was really helpful especially the part where you put the exam questions as it helps to apply the knowledge. once again great videos, thank you!
Maryam Khanum No problem!
thank you so much i have watched every as unit one an two thank you so much!
You've really helped with my revision!!! Thank you so much!!!
I wish all my teachers were like you be blessed sir
All of your videos are extremely helpful, thank you!!
Clara Fitzgerald Thanks very much, Clara!
Thank you for guiding me through Chem 2 like a pro!
Paws For Thought Thanks for taking the time to comment!
If I found you a day before I would have had hope for my exams 😩😩
Watched all of your AS videos now, thanks a lot, exam is in 2 days Unit 2, let's hope i can pull this off
RevolutionV Fingers crossed!
E Rintoul Exam was too easy, pretty sure i got an A, thanks again
RevolutionV Too easy... dangerous words!
E Rintoul You're right i got a B lol but im still happy about it, i hope you continue your awesome vids through A2
That's an excellent grade to be getting at AS! Well done!
Mr E Rintoul have you done the video of mass spectrometry '' TOF' for the new spec?
Pretty sure he has a video of that.
thank you man, this was amazing. I just have one question, does it matter what size the peaks are? for example, if one is relatively small does it still count as a "peak"?
Thank you - really helpful for Covid quarantine mocks !!
Thanks again for this video, any chance you can make some videos going through the practicals since there is now a practical paper?
Have you covered the fingerprint region
An excellent video as always
thank god you exist
Please come and be a Teacher at Wilmslow High School... Could definitely do with a Teacher who actually knows their stuff.
Thanks so much for these videos, I'm starting this topic tomorrow and this has really helped me to understand beforehand so that I can potentially get ahead of the class. Again, thank you so much!
Love your videos, the notes are so simple and concise!!! Will you do any videos for 2nd year a level chemistry???
you made this so easy, thank you !!!!! makes sense now !
This man is saving my life
Thank you, once again, for this superb video! It helped me out a lot. :)
***** I'm very glad!
Due to the new specification I can't find any updated videos on how the mass spectrometry works for example going into detail about ion drift and the other steps, do you have any recommendations?
+Ellesse Bryant This video is high on my list for that very reason!
hi i was just wondering if you teach in manchester and do u do any privet lessons?
If u listen closely, the bell rings at 1:38
YOU SAVED MY LIFE.
Well that's a bonus I guess!
LOVE YOU!
Thanks...
Ahhhh yet againnnnn thank you!
Not a problem!
Thanks a lot, lifesaver. Exam in less than 3 hours ^_^
Nick Yushkevich GOOD LUCK!
hi, i didn't really understand why the molecular ion peak is at 46 and not any of the other ones, could you explain that please?
The other peaks represent where the molecules in the sample broke apart when going through the mass spectrometer, or lost more than one electron. The biggest z value with a peak is the mass of the molecule in the sample, because it didn't break down.
I'm doing Edexcel, is it any different to AQA? If so is it possible you could cover them? Thank you! You rock! 😄
its the same,
Cheers :) even though I am retaking so I should know all this anyway. May I ask what you do for a living? Secondly will you be doing more videos for Chem 4 & 5 before 10th & 16th of this month?
Not a problem!
You may; I'm a Chemistry teacher.
And yes, the plan is to get more CHEM4 and CHEM5 videos made this week and and at the weekend (particularly CHEM4 as that exam is first).
E Rintoul just to add there should be "great" before Chemistry... and yes it makes all the difference!
WOW Woah I'm happy to have helped.
for 8:17 arent we supposed to draw CH2=CHCH3 instead?
i am doing OCR does this help...
This man is goated
Just a quick question, if we are reading from the IR the transmittance why when we explain how we deduced our answer we say for example, the presence of C=C bonds in the IR and give the range. Surely what ever is transmitted is not absorbed so that bond isn't present in the structure?
Cygnus I The transmittance tells us what was absorbed. It's like you and a group of your mates walking through a shopping centre. You walk past loads of shops and a couple of your mates disappear into a shop. When you realise, you know that Jon and Miguel have gone and as such, because you know them, you know that there must be an Accessorize because they love that place.
By looking at what is transmitted, we know what was absorbed... Does that help at all?!
THANK YOU!
LoveYouMilo No problem!
Thanks you just saved me
Would it be possible to split your playlists in to as and a level; “ AS organic chemistry” ?
Sure thing. I'll have a look over summer!
You're the best
Thankyou sooooooooooooo much !!
Haider Ali No problem :)
thank you ever soo much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
hey dude great vid again :) but i'm a bit confused why there are two different wave numbers for an O-H bond for acids and alcohol's, thanks man
I think the O-H (acids) is for carboxylic acids and the other O-H is just for alcohols :)
Josh Teale Honestly I can't give you a definitive answer, but I would guess that the rest of the molecule being different means that the bond in turn is different. That kind of make sense?
You are AMAZINGGGG xxxxx
also what is a reagent? for example give a reagent for the reaction ch3ch2br goes to ch3ch2oh
Josh Teale A reagent is a substance added to/ previously available which is required for the reaction to take place
Josh Teale Thanks again to Connor for answering the question! A reagent is an actual thing that you can add. E.g. you may want to add hydroxide ions for a particular reaction, but you can't just add hydroxide ions, instead you would add sodium hydroxide which provides the ions. Does that make sense?
How did he know it was CCL4 ,i dont see that anywhere
Thanks! I hate this part of chemistry. Can I ask what the word "deduce" means?
Boro Jen xX It means to work/ figure out something by using the information given to you
oh, well thank you!
Boro Jen xX Thanks to Connor for his answer!
You're welcome bro :)
thank you
AQA has recently changed the mass spec stuff for our spec and has added certain things like the kinetic energy of ions; would it be possible to make a video going through this
www.aqa.org.uk/news/changes-to-as-and-a-level-chemistry-specifications-march-2016
There's the link relating to the changes, thank you
+Fatima Awow Thank you for highlighting this. I can't tell you how annoyed I am at seeing this. Bloody people at AQA making changes so close to exams. I am furious.
+Fatima Awow EXAMS NEXT MONTH HOW CAN THEY DO THIS?!
+Fatima Awow I've looked at the link but I'm still confused as to whats different. Is it back to using an electron gun instead of applying a high voltage?
+Mina Siu its best seen in paper 1 (set 2) question 3.4 of the specimen papers
did you ever make a video of mass spectrometry in depth?
top class
The best
thank you sooooo much: ):):):)
No problem.
Helpppppppfulllllllll ❤
how do you know X is CCL4?
There are no C-H bonds present, if there was it would be shown in graph so its CCl4
do we get that table in the exam
Absolutely. Your data sheet contains a periodic table, some data on NMR (an A2 analytical technique) and then the IR data.
thanks a bunch, the videos are brilliant by the way it's hard to find someone that actually sounds like they know what they are doing without being patronising on youtube :)
1:30 you put my teacher down.
I said ŚTFU I can't listen with sound for some reason. What happened?!
You have to press the play button too.
I said ŚTFU Brilliant. Yeah, it was nothing to do with the sound card not working. It was just that I hadn't pressed play. Thanks.
No problem. A little knowledge for knowledge.
Why did you post it the so close to the exam ???
So that people can watch it before the exam? I could have not posted it at all. But I felt that was a little silly.
PS teaching all day means that I'm often quite pushed for time in the evenings.
dude, be a bit more appreciative! This teacher has come home from a hard day's work and produced this video at 9pm for the benefit of you- he doesn't gain everything from it!
Besides, I actually find these videos great to watch as a recap just before the exam.
Mr Rintoul, thank you very much once again- this isn't something I had thought to revise specifically so this video was particularly useful as a quick last min reminder!
the problem is i watched all your first 10 videos 2-3 time to make sure i understood them then the day before the exam you posted 6. I do not have the time now to watch them all to get a full understanding of them. they are really useful and i thank you for making them.
As I said, I'm busy with other commitments. Half term is a time for me to catch up with my life, and being away from home, I couldn't make any videos.
My primary reason for producing these videos was for my own students who will be using them in the future. It just so happens that people randomly found them and have found them useful!
E Rintoul As the years go on, your channel will begin to grow and grow. Many more people will find these videos in the future xD
opens can of coke 2:21
🤣
saving me xD... I hope for tomorrow
Get a good night's sleep. Stay calm. Read the questions.
xD That wont happen until I watch all of your videos. I have the exam at 13:30 though, so when i wake up will do a past paper and go over what i got wrong.
Matix700 Hello you again xD
***** hahaha i only watched like 10 videos so far... but i think i understand it... finally
Matix700 Thats good, I've watched quite a few of them. VERY helpful videos
about to be killed by Organic; thx bro
great video
schools are closed so I have to study by my self and your video help a lot :)
thank you