0:46 fundamental particles 4:20 nuclear symbols (how many fundamental particles) 6:40 isotopes 8:23 electron configuration 9:45 energy levels 12:48 atomic orbitals 17:32 putting electrons in their place 19:17 electronic structure (configuration) 22:59 transition metals rules 24:36 ionisation energy 29:27 using ionisation energies 32:30 finding what group they're in using ionisation energies 34:17 successive ionisation energies 39:43 mass spectrometer 44:49 ionisation 47:57 detection 49:05 mass spectra 57:09 mass spectrum calculations 59:44 rearranging calculations 1:01:08 shortcut method 1:05:25 calculating relative atomic mass for isotopes 1:08:28 abundance
Best chem yt teacher ive ever found. its better than having a tutor, better than any teacher ive ever had, they just read info out to you like im listening to a textbook this is the first time ive seen what a good teacher is like. cant thank you enough, looking forward to qatching all of your other videos for my a level chem.
This is really lovely to read, thank you so much for your kind words. I love making the videos and hearing they they've been useful, so I'll definitely keep doing it! I dont know if you've seen this, but I have made a document with links to all my videos drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view?usp=drivesdk May be useful!
@@chemistrytutor Thanks a lot that document is extremely helpful and well formatted, it will make my revision so much easier i cant thank you enough for this
Thank you so much sir! Please don't stop making these they're pretty useful and you make complex things very simple to understand . just wanted to let you know that youre helping thousands of depressed A level students to ace their A levels. once again thank you.
Thanks for this amazing video! One problem i have is that your voice is really low. I don't know if it's still the case with new videos but without captions it's difficult to tell what you're saying.
Thank you so much this is really helpful, but it would be even more amazing if you added a few exam style questions for the topic you teach at the end of each video and go through it so we can see what the examboard wants
Ionisation energy? No, as atoms get larger, with more occupied shells, ionisation energy decreases. It might be help to call the shells by their alternative name- energy levels. Atoms in a shell further from the nucleus are said to be in a higher energy level. If they have a higher level of energy, they need LESS extra energy given to them in order to escape the attraction of the nucleus
Hi, thanks for the comment. It depends on which type of mass spectrometry you are working with. The Time Of Flight (TOF) mass spectrometry I'm describing here is 4 steps. This is the version for AQA a level, and as far as I know most others; it's the more modern version of a mass spectrometer - partly because the machine takes up less space. The slightly more old fashioned version does indeed involve 5 steps with the extra step being as you say, Deflection. The biggest differences between the function of the two machines is that TOF separates the different sized ions in the sample by getting them to drift with constant kinetic energy, so heavier ions take longer to drift, whereas in the 'old fashioned' machine ions are separated using a variable/increasing magnetic field. So heavier ions need a stronger magnetic field to deflect them round the corner. Thanks for the comment
I paired them up in 1s and then 2s, yes. The rules were kind of written in order of importance. 1) fill lower energy orbitals first, means completely fill 1s, then 2s. Rule (2) is only relevant when you have multiple orbitals in a sub-shell. So the 3 x p orbitals get filled singly first, and same for the 5 x d orbitals (with one exception per row. Hope that helps
yes, I believe so. All A level courses for sciences *have* to be similar. I think chemistry course is almost identical whatever the exam board. There are some differences in the exams themselves. That seems to be the main difference
Argon has 18 electrons and so the top row transition metals have the same electron arrangement as argon, and then however many electrons needed to finish it off. So copper has 11 more than argon so it is [Ar]3d^10 4s^1
0:46 fundamental particles
4:20 nuclear symbols (how many fundamental particles)
6:40 isotopes
8:23 electron configuration
9:45 energy levels
12:48 atomic orbitals
17:32 putting electrons in their place
19:17 electronic structure (configuration)
22:59 transition metals rules
24:36 ionisation energy
29:27 using ionisation energies
32:30 finding what group they're in using ionisation energies
34:17 successive ionisation energies
39:43 mass spectrometer
44:49 ionisation
47:57 detection
49:05 mass spectra
57:09 mass spectrum calculations
59:44 rearranging calculations
1:01:08 shortcut method
1:05:25 calculating relative atomic mass for isotopes
1:08:28 abundance
Thanks for this
@@chemistrytutor Thanks for the video!
Best chem yt teacher ive ever found. its better than having a tutor, better than any teacher ive ever had, they just read info out to you like im listening to a textbook this is the first time ive seen what a good teacher is like. cant thank you enough, looking forward to qatching all of your other videos for my a level chem.
This is really lovely to read, thank you so much for your kind words. I love making the videos and hearing they they've been useful, so I'll definitely keep doing it!
I dont know if you've seen this, but I have made a document with links to all my videos
drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view?usp=drivesdk
May be useful!
@@chemistrytutor Thanks a lot that document is extremely helpful and well formatted, it will make my revision so much easier i cant thank you enough for this
@@hxshvm4385 excellent! Feel free to share with anyone else who might value it
I am not fond of commenting but this guy made me do so. It is really very useful video.
Thank you so much sir! Please don't stop making these they're pretty useful and you make complex things very simple to understand . just wanted to let you know that youre helping thousands of depressed A level students to ace their A levels. once again thank you.
Thanks for your kind words 😊
You can do this!
20:40 won't carbon's electron config be 1s2, 2s2 2p2 ? if not then why's it 2p4?
You're absolutely correct. Good spot!
This is beyond fantastic... You explain the most complex things so simply!!! Making my life 1000x easier one vid at a time
Thanks for the lovely feedback! I'm really pleased it's useful!
Thanks for this amazing video! One problem i have is that your voice is really low. I don't know if it's still the case with new videos but without captions it's difficult to tell what you're saying.
Thanks for the feedback. I dont think it is an issue for the more recent videos
I’ve been trying to learn this for a quiet a lot of time but couldn’t get it thank you
That's really lovely to hear!
Thank you so much! This helped me a lot!
Glad it was useful. Hope chemistry is going well 😃
You are an excellent teacher. Please never stop adding value to your generation.
Thanks for your kind feedback 😀
Thank you so much this is really helpful, but it would be even more amazing if you added a few exam style questions for the topic you teach at the end of each video and go through it so we can see what the examboard wants
Hi, thanks for the comment. I've done exam style questions as separate videos for a number of topics. This was to make sure videos were not too too! 😁
Multiple Choice questions: ua-cam.com/video/ux_xskQabmc/v-deo.html
Atomic Structure ua-cam.com/video/Z6orlioShaY/v-deo.html
Thank you for this video, it taught me more than my chem teacher could in a week
Thanks for your kind words! 😊
You have helped me understand this more than my lecturers and I owe you a big big big thank you ❤️❤️❤️
I'm really glad it's useful! Thanks for the kind feedback! 😊
amazing. really helpful.
Glad it was helpful!
Thank you so much .this was helpful and it's understandable 👏👏
Thank you so much for the lovely feedback. It's really appreciated
This one deserves a 👍👍👍👍thumps up
Hello, do you use ipad for making your notes in these videos ?
I do, yes. Hope its useful!
does the energy increase with increasing shell number?
Ionisation energy? No, as atoms get larger, with more occupied shells, ionisation energy decreases. It might be help to call the shells by their alternative name- energy levels. Atoms in a shell further from the nucleus are said to be in a higher energy level. If they have a higher level of energy, they need LESS extra energy given to them in order to escape the attraction of the nucleus
Thank you for this video...
You're very welcome 😀
Great tutorial
Thank you 😊
its actually 5 steps rather than 4. The first step is Vaporisation. Also, the third step Ion drift is actually Deflection of ions.
Hi, thanks for the comment. It depends on which type of mass spectrometry you are working with. The Time Of Flight (TOF) mass spectrometry I'm describing here is 4 steps. This is the version for AQA a level, and as far as I know most others; it's the more modern version of a mass spectrometer - partly because the machine takes up less space. The slightly more old fashioned version does indeed involve 5 steps with the extra step being as you say, Deflection. The biggest differences between the function of the two machines is that TOF separates the different sized ions in the sample by getting them to drift with constant kinetic energy, so heavier ions take longer to drift, whereas in the 'old fashioned' machine ions are separated using a variable/increasing magnetic field. So heavier ions need a stronger magnetic field to deflect them round the corner. Thanks for the comment
Mann teach me chemistry plss🙏🤌
Amazing!
😃
Thank you🙏
Glad it's useful 😊
This guy is helpful and all but it would be better if there were subtitles
Yes, it's an earlier one. Not such good audio. Cc English subtitles are available for it
At 18:40 you said fill orbitals singly before pairing up but u paired them up in doing the carbon... please explain to me
I paired them up in 1s and then 2s, yes.
The rules were kind of written in order of importance.
1) fill lower energy orbitals first, means completely fill 1s, then 2s.
Rule (2) is only relevant when you have multiple orbitals in a sub-shell. So the 3 x p orbitals get filled singly first, and same for the 5 x d orbitals (with one exception per row.
Hope that helps
@@chemistrytutor thank you so much I understand now
why is carbon's electron configuration 1s^2 2s^2 2p^4 if there are only 6 electrons in Carbon, not 8....?
You're absolutely correct. Good spot!
thank you so much
You're very welcome. Glad it was useful 👍
Sir,
you made a mistake in writting electronic configuration of C6
You're correct! Good spot. I wrote p4 instead of p2
Thanks 😊
thank you :))
You're welcome 😊
Is this Cambridge As level?
yes, I believe so. All A level courses for sciences *have* to be similar. I think chemistry course is almost identical whatever the exam board. There are some differences in the exams themselves. That seems to be the main difference
is the carbon electronic structure not 1s2 2s2 2p2 as carbon has an atomic number of 6 not 8
Yes, you're correct! Good spot 👌
Youre videos are amazing they really helped me understand the content thank you !
@@user-jc2jd9kj2k you're very welcome! Thank you for your kind words 😊
carbon's electron configuration should be 1s2 2s2 2p2
You're absolutely correct. Good spot!
the electronic configuration of Cr and Cu are confusing me. why is Cr = 6 when Cr has 24 electrons and why is Cu = 11 if it has 29 electrons?
Argon has 18 electrons and so the top row transition metals have the same electron arrangement as argon, and then however many electrons needed to finish it off. So copper has 11 more than argon so it is [Ar]3d^10 4s^1
@@chemistrytutor ohhhh, so it’s the condensed configuration? Thank you so much! Amazing video, by the way. Was very helpful 🤩
@daintyfawnee thank you 😊
Yes, it should be 1s^2 etc for the first 18 electrons but [Ar] is fine for shorthand. Not for exams though!
nice nice
😃
the electronic configuration of fe actually confused me a little bit
Hope it makes a bit more sense now! Let me know if not 😀
god bless u
😃
What a guy
😎
34:17
😀
Im not going to lie but i got lost as from 21:09 till the ionisation part
Electron configuration can be tough. It takes practice but you'll get there!
In last example if we make mg25 =x the result change
The value of x changes, yes. But that's because x is now the Mg 25 percentage, so you would expect it to change