Hi! I'm Karen McFarlane Holman, Ph.D. I'm a chemistry professor & musician. I’ve combined my expertise in chemistry with my keen ear to create ASMR that you can use to help you study or relax. Teaching is my passion, and I’m thrilled to be able to have another outlet to educate. Thank you for watching and subscribing, I’m so glad you’re here! Many of you have asked about the pen I use. Below is a list of the pen/nibs, ink, and paper that I use. These are affiliate links, meaning that I would receive a small (3%?) percentage of sales. Have fun! xo PEN (comes with 5 tips, which are called "nibs") amzn.to/3NcWYVe NIBS (Nikko) amzn.to/37FjmHy INK (Yasutomo) amzn.to/3yDqIq7 PAPER (108 lb.) amzn.to/3L8lWUb
You asked in the video whether we prefer this type of video vs the written chemistry examples type of video, of course this is impossible to answer as they are all brilliant!! The first person who came to mind when I began watching this video was actually Lise Meitner, I hope she appears in the cards somewhere :) I'd personally love so see the rest of the cards in a future video. Since Marie Curie does have Curium named after her, I wonder why it didn't happen while she was alive... Perhaps she preferred not to have an element named after her at the time, who knows.
Ahh, what a great answer, and so much appreciated! I’ll continue to do a mix of different types! Yes - Lise Meitner is a fave of mine, too. I’m positive she’s in there… she’s gotta be! I’ll make another video for sure. And, good point about Curium! I suppose it was named after both her and her husband, but she is definitely the star of the show. I wonder if it’s documented somewhere how/why they named the two elements she discovered.
Oh I’m so glad you love it! I looked on my shelf and saw these cards and was immediately inspired. I’m thinking I’ll do videos like this every so often. Not sure if you saw the ones I did with element cards. Anyway, nice to see you again here!😃
You are so welcome! I’m glad you are enjoying them. Thank you for the request. In terms of isomers, are you looking for a video about hydrocarbon isomers, or coordination compound isomers? Or maybe both!😄
Thank-you! I loved the SN2 video as well! May I ask a quick question: Since you can have chiral inversion resulting from this type of reaction, would it be the case that any single enantiomer, capable of forming an sp2 hybridized intermediate, will eventually turn into the racemate given long enough? I can imagine a chiral alkyl halide, for instance, separating into carbocation and halide anion, and recombining with chiral inversion, eventually due to the entropy there would be equal proportions of each...?
First off, thank you for the kind words! I’m so happy that you are loving these videos.😃 Great question! You are absolutely right, any one of these compounds that has some amount of inherent instability to lose one of the groups and form an sp2 hybridized intermediate, has a likelihood of forming a racemic mixture. One of the key aspects you pointed out in your message: “given long enough”. In terms of it being a 50-50 mix of products, it depends on the structure of the compound itself, specifically around the chiral center. If one of the groups is larger, the sterics will throw off the relative percentage of the R/S enantiomers. Thanks again for the question! Hope this helps confirm your suspicions and adds some more insight! @AG-nq6tt
@@ASMRChemistry Thank you so much for the reply! We (your subscribers) really are blessed that you dedicate so much of your time to answering our ponderings! I have been searching for some time for an intuitive understanding of entropy, specifically as it applies to chemical reactions (not physical changes like gases mixing); Explanations along these lines tend to be rather elusive, so I thought perhaps I was on the wrong track entirely! :) Would it be fair to say that the "steric factor" contributes to a reaction being "favoured" (or otherwise) by entropy, that is, that larger molecules are favoured because it is less likely that collisions between them will result in a successful collision, hence for any given concentration the reverse reaction is less probable (if we ignore activation energy for the sake of the thought experiment)? An extreme example would be a bare proton which could theoretically react regardless of the orientation of the collision, vs a long molecule with the reacting group on the end that has to collide in just the right way. Anyway I've taken up too much of your time already! Thank you so much.
This video from you is another one worthy of an Oscar. Btw, I was wondering if you could provide a description of the molecular structure of Sodium Nitrite?
Why, thank you! Not so sure about an Oscar😆 but I very much appreciate the compliment as always!☺️ As for your question- yes I could absolutely do that. As a preview, it would be a fun combination of three topics - ionic compounds, polyatomic ions, and resonance structures!😃
Hello Madam, how're you doing!? I missed your few videos. Chemistry isn't my subject but I really enjoy these videos, reminds me of my college studies haha And as always, absolute soothing voice you've! With really pretty handwriting❤️
Hi there!! It’s been a while since I’ve heard from you, and it’s so nice to get a message from you again! How are you? I’m so glad you’re enjoying these videos!! I love making them. ☺️ Hope you’re well!
Haha! It’s true. And kind of funny - when I teach classes at my university, I’m energetic and animated. But here, I’m the opposite! Both are kind of nice, depending on if you need to wake up or need to sleep!😂
That is a great request - I know others would like it too. Waiting for the jackhammer next door to stop working, and I’ll make more videos!! Thanks so much for the message and I’m SO happy you’re enjoying the stereochem video!
Ma’am, you have no idea how happy I am when i see a new video from this channel. 🎉 I’m so thankful that someone combined chemistry with something so niche like asmr! 👏
When I was young we has a can of sodium Silicate under the kitchen sink. I don't know why we had it but I seem to remember it said on the can that it was for preserving eggs. I had a Thomas Salter Chemistry set 7 it was the biggest one they made and had a burette and a wooden retort stand I worked through a number of the experiments in the book but not sure I understood actual chemistry at age 10. The chemicals came in tubes with plastic stoppers not jars like yours. Fond memories of youth.
These are amazing memories!! Wow, that’s impressive they included a buret. And hey, even if you didn’t understand it all at age 10, it clearly had an impact!! Thanks for this message, John!
Kristina, thank you!! I’m so glad you like it. And happy to see you here! You’re one of my longest-running friends to this channel, and I appreciate you!
I love these videos so so much, both informative and relaxing 😊 I would love to hear about the lab techniques that you do in chemistry like chromatography or distillations and how they work. Thank you for making this content it’s amazing!!
What a great idea! The only one like that I’ve done so far was titrations, but there are so many more I could do - thank you for that suggestion! I also super-duper appreciate all your kind words. They mean a lot to me.☺️ Thank you for being here!
I do have one on Endo & Exothermic, but after you watch it let me know if you want more on this topic (like different kinds of problems on it)!! Link to it: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-R5cVVKKFiT4.htmlsi=IkqSzJR0wOC1aDjp
