Molecular Formula vs Structural Formula vs Skeletal Formula
This video provides a detailed overview of three primary types of chemical formulas: molecular formulas, structural formulas, and skeletal formulas.
More organic chemistry help at www.Breslyn.org !
We'll start with molecular formulas, which simply list the types and numbers of atoms in a molecule, offering no structural insights. Then we’ll look at structural formulas, which build on molecular formulas by showing the connections between atoms, thus giving a basic view of the molecule's structure. Lastly, we'll cover skeletal formulas, which are streamlined representations used mainly in organic chemistry to depict the carbon backbone of molecules, omitting most hydrogen atoms.
Be sure to do the practice problems to really learn to identify and draw each type of formula. Also look carefully at the visual demonstrations that show how each formula type correlates to the actual structure of molecules, aimed at improving understanding and visualization skills.
Пікірлер: 42
hey! I just wanted to say thanks for all of the work you have put out there for free for the public! You are such a good teacher, and I am using your videos to help study for my exam tomorrow :)
@wbreslyn
2 ай бұрын
Thanks and all the best on your exam!
See again with the mind reading! I just moved into revising organic chem and here this shows up! so grateful for your videos especially knowing they are concise and to the point, which helps to ease me out of scrolling and into doing something productive when I can't be bothered to open my textbook or listen to a whole lecture.
@wbreslyn
2 ай бұрын
Nice, that's great to hear! I also put my first orgo guide up on www.breslyn.org if you need it as a refresher.
@Chirp-chirp
2 ай бұрын
@@wbreslyn ill check it out! Thanks
Great video! I love practicing IUPAC naming of compounds from their skeletal structure and drawing skeletal structures in my free time
@wbreslyn
2 ай бұрын
Yes, they are sort of like puzzles but with actual molecules. Glad to hear someone else likes them!
Glad to see you are continuing your work. I will be in touch to update you on my situation
@wbreslyn
2 ай бұрын
I look forward to hearing from you!
thanks man for the help i was looking for this
@wbreslyn
2 ай бұрын
No problem 👍
Thanks, you are the best!
@wbreslyn
2 ай бұрын
You're welcome!
Hi Mr. Breslyn. I have a question, how can you tell the polarity between like compounds or big ones such as hexane, water, octane, and etc?
@wbreslyn
Ай бұрын
Good question. It's essential the same as in this video kzread.info/dash/bejne/gXx6qbqfh6XFopc.html , but for some compounds, like alcohols, as they get larger the solubility will change. They discuss this here: chemed.chem.purdue.edu/genchem/topicreview/bp/2organic/alcohols.html
How do you predict products for covalent compounds. Like S8 + O2 -> SO2 Or SO2 + O2 -> SO3 Or N2 + H2 -> NH3 Like where do these numbers come from if we don’t know the charges?
@wbreslyn
2 ай бұрын
You can look and see if the possible resulting compounds obey the octet rule, that can help. So SO2 is possible, SO3. SO4 or SO5, not so much. The number of valence electrons gives you some idea as well. But really, it is tricky because often the products depend on the conditions.
Do you have anything (video or advice) on empirical formula? Particularly confused about the point of it? Like, whats it's use and how do different compounds simplify?
@Chirp-chirp
2 ай бұрын
ALSO condensed formula where it's CH3(CH2)4CH3 or something like that with branches
@wbreslyn
2 ай бұрын
This is my video on empirical vs molecular formulas: kzread.info/dash/bejne/ZGhmw9GJitirZps.html
@wbreslyn
2 ай бұрын
I need to make a video on that!
@Chirp-chirp
2 ай бұрын
@@wbreslyn thank you!!!
Who we know by seeing orbital digrams that a particular atom has vacant orbital or not ??? Plz tell mee
@wbreslyn
Ай бұрын
A vacant orbital in an orbital diagram is a box with no arrows in it. Like Boron kzread.info/dash/bejne/mayJuNZ6ipC3kto.html
Yoo,can you draw a graph again,we have a test on tomorrow 😢
@wbreslyn
Ай бұрын
What graph are you referring to? I'd be happy to try and draw it again! Maybe this: kzread.info/dash/bejne/hX-GpLt_Yry4f7A.html or this? kzread.info/dash/bejne/g6d5krCAdcq5eZs.html
@MuaniRalte-gf9ld
Ай бұрын
@@wbreslyn amm just draw step by step 🙏
Good morning sir I am Hamza
@wbreslyn
2 ай бұрын
Good evening!
@itsmusictime756
2 ай бұрын
@@wbreslyn its morning time here sir
@wbreslyn
2 ай бұрын
Oh right, it's evening here, morning where you are!
@itsmusictime756
2 ай бұрын
@@wbreslyn India my name is Hamza
I understand you, but why is humility translated into Arabic?
@wbreslyn
2 ай бұрын
Probably something to do with all this AI stuff google is doing.
@Feli46x-se2uv
2 ай бұрын
@@wbreslyn I did not understand. Does this mean that I should stop watching you and unsubscribe to your channel? I did not understand
@wbreslyn
2 ай бұрын
@@Feli46x-se2uv No, not at all! Please keep watching! What I mean is that sometimes KZread will do strange things in terms of translation - it's not in the power of the content creator in many cases. My guess is that is why humility is translated into Arabic.
@Feli46x-se2uv
2 ай бұрын
@@wbreslyn ok I will watch your videos and continue to follow you, but I have a question: Do you teach all levels or is it general for all grades?
@Feli46x-se2uv
2 ай бұрын
@@wbreslyn you so good 🫀❤️