4.6 • 612 Ratings
🗓️ 15 May 2025
⏱️ 36 minutes
🧾️ Download transcript
In this episode, we cover molecular structure and the key spectroscopy techniques you need to know for the MCAT.
We'll explore the intricacies of Nuclear Magnetic Resonance spectroscopy, breaking down the chemical shifts and spin-splitting essentials for understanding hydrogen and carbon bonds in various compounds. You'll learn how to identify functional groups using Infrared (IR) spectroscopy and how mass spectrometry can help determine molecular weights and identify unknown compounds. We'll also touch on UV-Vis spectroscopy and its role in quantifying compounds based on absorption spectra.
Visit MedSchoolCoach.com for more help with the MCAT.
(00:00) Intro
(01:50) Introduction to absorption spectra and molecular structure
(01:52) Absorption spectroscopy and its applications
(03:39) IR spectroscopy: Analyzing functional groups with infrared radiation
(07:57) Key IR peaks to know for the MCAT
(09:52) Visible light and its role in determining compound color
(10:57) UV-Vis spectroscopy: Connecting visible and ultraviolet light for compound analysis
(14:06) Quantifying compounds using UV-Vis spectroscopy and Beer's Law
(16:48) Mass spectrometry: Determining molecular weight and identifying compounds
(22:18) Interpreting mass spectrometry graphs and calculating molecular weight
(26:44) NMR spectroscopy: Understanding molecular structure through proton shifts
(31:23) Key NMR shifts to know for the MCAT
(33:21) Spin splitting in NMR and the n+1 rule
Click on a timestamp to play from that location
0:00.0 | Welcome to MCAT Basics, your ultimate guide to the essential topics you need to master for the MCAT, |
0:07.0 | brought to you by the physicians at Med School Coach. Every week, Sam Smith breaks down high-yield MCAT topics, ensuring you're primed for success on test day. |
0:16.0 | Join Sam as we explore the most crucial subjects outlined by the AAMC, pulled from official |
0:21.9 | practice materials and third-party resources. Get ready to elevate your MCAT game with topics |
0:26.9 | tailored to maximize your score potential. Hello, I'm Sam Smith. This podcast covers |
0:33.3 | absorption spectra and molecular structure. I'm going to talk about IR, UVVIS, mass spec, |
0:40.3 | and NMR. And I'm going to kind of tie in how each of these different techniques is used to |
0:45.3 | identify molecular structure. I'll give you a little bit of background on each technique, |
0:50.3 | and then I'll dive into numbers and other info that you should know for each of these on the MCAT. |
0:56.6 | With that said, this material will show up on two out of the four MCAT sections. |
1:01.3 | That's the bio-bi-com section and the chem-fiz section. |
1:05.3 | I hope you find the information in this podcast helpful for your studies, |
1:09.2 | and good luck as you prepare for the MCAT. |
1:18.6 | As the title of this podcast suggests, I'm going to talk quite a bit about absorption spectra. |
1:24.1 | Now, not every single technique that I'm going to talk about in this podcast is considered |
1:28.4 | absorption spectroscopy. So that's kind of the first thing I want to answer here is what exactly |
1:33.2 | is absorption spectroscopy. Absorption spectroscopy is a technique that measures the absorption |
1:40.6 | of radiation as a function of frequency or wavelength due to its interaction with the |
1:45.5 | sample. In English, basically, what happens is that you have a sample. You know, you don't know |
1:51.5 | something about the sample and you want to study it. And so you shoot radiation and think |
1:55.6 | electromagnetic waves at the sample. And these waves have a known wavelength or a known frequency, and then you |
2:02.9 | see how much of that radiation the sample absorbs. In short, a detector sits behind the sample, |
... |
Please login to see the full transcript.
Disclaimer: The podcast and artwork embedded on this page are from MedSchoolCoach, and are the property of its owner and not affiliated with or endorsed by Tapesearch.
Generated transcripts are the property of MedSchoolCoach and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.
Copyright © Tapesearch 2025.