Stoichiometry Tutorial: Step by Step Video + review problems explained | Crash Chemistry Academy
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- Опубліковано 5 лип 2024
- Stoichiometry: meaning of coefficients in a balanced equation; coefficient and molar ratios, mole-mole calculations, mass-mass calculations, mass-particle calculations, and mass-volume calculations. For help with mole conversions, see this video • Mole Conversions Tutor... , for help with balancing equations, see this video • Balancing Chemical Equ... , and for help with solution stoichiometry, see this video • Solution Stoichiometry... , and for help with identifying reaction types, see this video • Types of Chemical Reac... .
-More on Stoichiometry | Wikipedia-
"Stoichiometry...is the calculation of relative quantities of reactants and products in chemical reactions.
Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known quantity and the quantity of product can be empirically determined, then the amount of the other reactants can also be calculated....
Here, one molecule of methane reacts with two molecules of oxygen gas to yield one molecule of carbon dioxide and two molecules of water. Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. In the example above, reaction stoichiometry measures the relationship between the methane and oxygen as they react to form carbon dioxide and water.
Because of the well known relationship of moles to atomic weights, the ratios that are arrived at by stoichiometry can be used to determine quantities by weight in a reaction described by a balanced equation. This is called composition stoichiometry.
Gas stoichiometry deals with reactions involving gases, where the gases are at a known temperature, pressure, and volume and can be assumed to be ideal gases. For gases, the volume ratio is ideally the same by the ideal gas law, but the mass ratio of a single reaction has to be calculated from the molecular masses of the reactants and products. In practice, due to the existence of isotopes, molar masses are used instead when calculating the mass ratio."
Wikipedia contributors. "Stoichiometry." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 27 May. 2016. Web. 27 May. 2016.
CC Academy videos are easy 101 crash course tutorials for step by step Chemistry help on your chemistry homework, problems, and experiments.
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I'm taking chem right now, and I thought Stoichiometry is going to kill me, but not after watching this video. It's so simple and easy to understand, why can't our teacher be the same and show us step by step once to actually understand what Stoichiometry means. Thank you so much for this lecture, I'm sure it will help a lot of students that are confused like I was.
Fr, it felt like I was the only one lost because I couldn't figure out how to balance the equations properly but with that simple tip of making sure everything can cancel, the problem clicks in my mind now. Hope you finished your Chem with a good grade!
Моё решение было легче
Where's the 28g N2 coming from?
@@shaesunshine1225Ram of 1 nitrogen is 14 so if they are two they become 28.
Chem? Lmao I’m in physical science and learning this.
you may have saved my ass here, I've got a test on this in 2 days, if I fail I can't take the exam, which would ruin the semester. I just learned more in 15 minutes of your video than in 3 lectures combined, so thank you.
I think I'll be doing this more often, the fact that you can just pause a video and give yourself time to figure it out makes it so much better than lectures... try pausing a lecture :D Again, thanks a ton my friend, you may well have saved me from having a really bad day.
Bruh I've learned more in 15 minutes than 1 month of classes. I would learn 5x as much in school if the teachers just played videos like this.
nj4ck i totally agree with you, I'm in summer school right now which i actually kind of like better than regular school because they have videos and such, but they just completely failed to teach stoichiometry to me and i just didn't understand it, thank you so much for this
I have a test on this too, on the same day!
COMPLETELY AGREE WITH THIS COMMENT : you may have saved my ass here, I've got a test on this in 2 days, if I fail I can't take the exam, which would ruin the semester. I just learned more in 15 minutes of your video than in 3 lectures combined, so thank you. thankkkkkk god
FINALLY. My teacher sucks at teaching. All year the whole class has been confused because he moves too fast. We are an honors class, so we are used to fast paced work, but he literally didn't explain ANY of this. He just wrote a bunch of notes on the board super quick and said "Got it? Good." He didn't even explain what stoichiometry was trying to show, so I didn't even understand what I had to do and why. That's why I wound up having to look it up on my own, as I have to pass this class. This video taught me more in fifteen minutes than my teacher has all week, so thank you for making it. It helped me greatly, and I'm finally beginning to understand how to work these problems out. I'll have to show the notes I took to the rest of my class so we can all actually pass the next test.
same
same honors class
same honors class
I feel like you're one of my classmates
Im in physical science honors and my teacher is showing me this😭😭😭
He doesn’t teach either. He teaches like his college professors, which don’t teach. They just present a bunch of information to you. All the notes I have on stoichiometry for his class because he didn’t even bother define it is an example of how many cups of eggs do 100 pancakes require. The rest of the time he just spent playing video games. So many people have already gone to the head to say he’s not a good teacher. I have too, my dad has, but nothing works. He just gets worse and worse..
He expects us to already know this and do it ourselves.
The internet can be a really wonderful place.
Still the best comment I've ever had, after six years. Beautifully said. Thanks.
Comment Before 6 Years and Now It's On The Peak 😝🥰
I know right
Literally. Your phone has everything you need and don't need.
Really, it's a nice way to solve any problem in any subjects.
I have a test tomorrow , didn't bother paying attention in class, and you swoop in to save the day :) Ty man
lmao same. Tbh I put off my homework for a week bc I didn't understand it and this vid saved me.
I wish I had chemistry….Im doing this in physical science…..
@@artistically_pain3876 your comment brought back ptsd after 7 years of not looking at this video
@@om-rane Lmaooo. I’m currently struggling right now. Our test was cancelled because he failed to provide us with the adequate answers and way of doing stoichiometry. Plus, he’s about to get fired
@@artistically_pain3876 oof, mine just goes off on religious tangents instead of teaching and sometimes isnt even there cause he has to help his son or something (the son was also a teacher at the same school) who got fired to telling a kid he would kill him
Had one of those lovely moments where you have no clue how to do it then somebody who can explain complex things like this comes along and just teaches you. Thanks a lot. First bit of chem I’ve had trouble with but thanks to you it’s easier now.
Thanks much, a very nice comment!
I have a test tomorrow on this, and you can teach better in 15 minutes than my teacher can in 2 weeks of lectures and worksheets
OMG. I had no clue how to do this. I watched so many other youtube videos and none of them explained them better than you did. THANK YOU. Btw are you a teacher because you should be. :D
no lol
+Wolf Pierre I am a high school teacher in Evanston Illinois
That's neat- Mr. Weiner.
Mr. Weiner really loves children. What a fabulous teacher!
2024
Either lecturers are being paid to take simple problems and make them look so difficult. Or you just excel at making the difficult look so easy Sir. Thank you so much, this sure gave me a better understanding of stoichiometry
*doesent pay attention in class the whole unit
(the next day)
*gets 85 percent on test
same as me !
awesome.😘😎
Hahaha
me rn
God i wish that were me
You just saved me from my Stoich exam tomorrow, thank you
Thanks a LOT! You just summed up 2 years of stoichiometry in about 10 minutes.. That helped a lot Thank-you once again.
you had me at "mathematically", thank you so much for this. as someone in math as high as third dimension calculus, struggling with beginner's chem has been humbling. this was very helpful!
This is an interesting comment for me (sorry for the belated reply). My students in higher level math, like you, often struggle a bit, and I always assume it is the difference between manipulating numbers as abstractions (in a math class) versus manipulating numbers that have been given meaning through units and measurement (in chemistry or other science). It seems to require a different part of the brain.
This is the best I have seen stoichiometry taught. I finally have a complete understanding of the concept.
Thank You, Young Apostle. You Were Sent To Save Us Students.
Simply superb... I had never listened to such a tutorial... Wonderful teaching. Thank you
Thank you so much! I'm glad to help out!
You have forever changed my life, thank you is not enough, I thank God for sending me your Video. Thank you so much. 😍👍
This is such an great explanation, it is patient and careful in explain the fundamentals of why we are doing what we are doing and how it works on a molecular level giving the viewer meaning to what he is doing and a deeper understanding. Your pace of speaking and tone is perfect and the animations give a great visual representation. You are a great educator, if only the 10,000s of thousands of dollars i spend at college would afford me a professor with your abilities.
wow! I wish you were my teacher! That would be a party
a few days old
seeing the flowchart at the end made me realize how awesome this is. Its amazing that we can do these conversions so easily.
All my life i never understood this topic until now, thanks alot this has really given me hope for my exams
thank you! ive seen a bunch of other vids on how to do this, but this is the only one i really learned from!
wow, 4 years of high school general chemistry on stoichiometry summed up perfectly in a 15 min video - you sir are a genius!
I watched 15 hours of videos on Stoichiometry and learned it in 15 minutes using this video. Thank you so much!!
u have freed my soul from the stress of chem. bless you senpai
This is probably embarrassing 4 years later. Is it?
@@dennzzy1567 why would it be? If you mean the word "senpai" is embarrassing, then unless they purposely used it in that way, senpai is a way to refer to some who is older than you or more experienced in Japanese. I understand it was blown out of proportion because of the Yandere Simulator thing but YS is literally based in a Japanese school in Japan. Unless you meant something else, then never mind.
Man this is way damn easier than the way my science teachers describe it. I hate how teachers in public schools always like to mess around with different "ways of teaching" based on how well it works with one school. -.-
well the way you explained it is way easier than the chemistry teacher at my school lol i was not aware
This has helped me way more with Stoichiometry than 3 weeks of lectures in my Chem class! Thank you
Holy shit, 10 years later and I still learned more in this video than I did in 3 months.
My teacher somehow stretched his good morning class to about 15 minutes. Within those 15 minutes, I was watching this masterpiece
😊
you're amazing. i'm watching this to refresh my memory but you're better than EVERY SINGLE professor I had for inorganic chem. thank you! please teach an Ochem1
that's quite alright. thank you for making this video you're an incredible teacher!
😍👆🏽🧐👍🏾
I wish I would have had this video a month ago. I have learned more by watching this video 10 times than I did the entire semester in chemistry.
Easy to follow, tones of great diagrams and went at a reasonale pace, WHILE explaining, thank you so much!
This is seriously such a lifesaver!! For weeks I have gotten help from teachers, multiple tutors, and countless UA-cam videos on how to do stoichiometry. Rather than starting simple they unleashed it upon me and I had no idea what it was conceptually or mathematically. Now that i know WHY it is so much easier!! Thank you for making it so easy to understand and for being so concise and detailed. It seriously helps so so so much! Much appreciation x
Great! Glad to help out and thanks!
This is one of the best explanations of stoichiometry that I've seen anywhere. Very clear and very useful. I particularly like the central examples given from 5:00 to 10:30. Excellent! Thank you!
bro ive taken 3 chem classes and have NEVER been able to understand stoichiometry but this was SO SIMPLE. wish professors just understood how to actually cater to students. thank u king
I can not understate how helpful this video was for me. I took chemistry I two years ago and I am now taking chem II, and this is fantastic!!
Thank you so much for the map! It really does help with conversions and shows the logic behind stoichiometry :)
2 weeks class on stoichiometry and I understood nothing. 15 minutes here and I'll remember it forever :D Thank you.
You are really helpful, you actually made it easier with the MAP, thats what i needed that my teacher cant provide! thank you so much
YOU SAVED ME!!!
Thank you so very much for this video. I have heard so many lectures, watched so many videos, read chapter after chapter, AND NOW FINALLY I UNDERSTAND! I am far from being able to fly through this like others I envy, but as long as I have a map - I WILL GET THERE!
Again sir, Thank you!
I am in tears! Thank you so much. I have watched video after video and yours is the first one to finally click everything in place. You are amazing. THANK YOU!
absolutely agree!! Thanks again..you're time is truly appreciated! :)
In India we solve stoichiometric problems with unitary method which is very confusing and time consuming....thanks a lot once again...hope u will post more videos like this
This dude just explained in 15 minutes what my grade 11 and 12 chem teacher hasn't explained in the last two years
I have a Chemistry test tomorrow that I wasn't prepared for before watching this video, awesome tut, thank you!
Your stoich map is so damn useful thank you!
salamat kaayo kuya ha kay nakasabot ko og stoichiometry tungod sa imoa. more powers. God Bless.
Salamat. Ikaw nagasulti sa maayo nga cebuanu
Same bro, same and nice try speaking Cebuano sir. You’re a hero honestly
yes i understood that reference.
Midterms na ugma, sir. Send help
Wait what?
what helped me the most was that chart where it told you for mass volumes and etc, this helped me more than my teacher who taught a whole lecture. 14:48
I've never found a video that explains stoichiometry so clear. Thank you so much!
when your only here cause you don’t join the zoom class
ITS CORONA TIME:
hahhahaha relate po
I thought stiochometry was just like plugging values in formulae but really it seemed be make sense now!! Thanks Gentleman
I have been trying to make sense of Stoichiometry for almost 2 years. It all make sense now thank you
My teacher went through this in 2 nanoseconds, this video was a Godsend thanks a lot!
Congrats! Perhaps there are videos out there as good as this but I doubt there are any better!
This is beautiful
Thank you so much, the way my teacher presented it was overwhelming without much logical explanation of what she was even doing, but the way you formatted the mass to mass conversion process was concise and easy to understand.
no one has ever explained this so well. So many videos and none of them make sense. Awesome video!
Thank you! I have a huge test tomorrow, and a final next week!
I have searched everywhere but didnt get satisfactory explanation
Your yt channel's name
CRASH CHEMISTRY
Is undoubtedly not a clickbait
Like others
Lol 😂
Although keep making such vidoes
Thank you for explaining this better in 15 minutes than my teacher did in four 50 minute long classes
You teach my my school
Wow! Why doesn't this video have more views??? You definitely know how to teach. You simply broke this down. I really appreciate your time making this video. Thank you
This video seriously made my life so much easier, I have my unit test tomorrow for chem and you made stoichiometry so much more easier and less complicated than my professor. I actually feel confident in doing these problems now. The flowchart at the end is such an awesome tool to have. Thank you so much.
I wish UA-cam and your course existed when I was in college. I think I actually understand this topic now after 20 years.
hella heart eyes for you
1/4 through AP chem and I'm here.... I'm an idiot
We're doing this in Chemistry Honors, I'm scared as to what AP Chem would be like...
you guys aren't doing so bad. I'm in college.
How do you make base chem harder?
@@devcentral7896 Doing harder problems and learning it all in a shorter amount of time
I love the way you explain! It's so practical and simple. Thank you so much for this video and for the time you took making it!
THANK YOU SO MUCH! I have a chemistry final tomorrow and after seeing this video of stoichiometry which i ad no idea how to do, i am bing watching your videos! YOU ARE MY SAVIOR!!!
You are a god.
He's more than a god
thumbs up for Dvars!!!!
your so queer
Thanks for making this tutorial! You're absolutely better than my professor! I have an exam tomorrow and you saved my life! :)
Thank you so much. I have learned more in this 15 minute video than I have with my teacher for a month now. Life saver. Thank you again.
you are a god!
I've never understood chemistry more 😭
👇If you agree
That mass-moles-moles-mass map is really helpful, thanks a lot
I sincerely wish for a teacher like you in all my Chemistry subjects ! God Bless!
yooo, i am taking chemistry right now (sophomore) in high school and after an entire month of sitting through lectures that did not work nor make sense, you've summed up an entire lesson in just 15 minutes, this is amazing. thank you so much, you've saved my life. if lessons were this simple damn, imagine how much schools could fit into cirriculums with teachers like you who know how to fucking teach.
You sound like Jesse pinkman's chubby friend from breaking bad
He does lol
Brandon Mayhew exactly😅
My professor hasn't been teaching us the material and expects us to still teach it to ourselves. Thank you, this video saved me from having a breakdown.
This video makes it 10x easier for me to understand rather than learning from school. Thank you so much!
who still dont understand??
I do
I do
Same & my exam is tmrw
Me
I
I wish I had a teacher like you my entire undergrad in Chem. I'm studying for the pcat and ur video is the only one that has made me understand this scary looking topic. Thank you somuch
Best teacher in the universe! You make chemistry seem so simple and interesting. Thank you so much :)
Great video man. I've been banging my head against the table trying to figure this out and the way you broke it down finally helped it all click. I really appreciate it. Thank you!
bro tysm litteraly my chem class been going over this for like two weeks now and i barely understood a thing. This video helped a ton. Got a quiz on it tomorrow
holy crap. I have been in class for weeks not knowing what they are doing but as soon as I reach the 5 minutes 45-second mark on your video I understand exactly how everything works. seriously I really hope you continue to succeed.
I have a test tomorrow and the first 4 minutes of this video explained the simple stoichiometric concepts better than any lecture I have had so far. Thank you, you earned a sub.
I have spent an entire semester studying various concepts in General Chemistry. All semester, Stoichiometry problems remained one of those concepts that I only memorized how to solve but understood nothing about the concept of its applications. Thanks to your video, I now understand what I'm doing with all these numbers and conversions. Thank you so much. You are VERY good at explaining the subject. Subscribed, and wishing you all the best.
I spent days trying to understand it yet you are the only one that i understood thank you so much!!!!!
thanks for making stociometry soo easy for me..u r really a great teacher...keep on making more videos
Worst username. Best teaching technique. After 10 years I finally get it. I couldn't understand it in high school, I couldn't understand it in college. Your very well-layed-out video was the perfect tool to learn this.
Thank you so much!
Amazing! Thank you so much for creating a great video that explains clearly and visually how to do stoichiometry.
I understand that this is an old video but thank you so much for taking the time to make this! This was absolutely wonderful and did not miss anything!
That chain chart with the fraction realllllllyyyyyyyyyyyyyyyyy helped me, thank you a bunch!!!!!!!
Watching this 15 min vid is much better than listening to my teacher for an hour. Really helped me a lot!
Fingers crossed: I was struggling all week trying to 'get' what the lectures were about and gave up all hope. THEN I found a 'cheat sheet' he gave at the beginning of the course that cracked this open a little but "not quite there".
But THIS all puts it together into a single thing and makes more sense. I checked his notes and could see where he was KINDA saying these things but not so clearly as you did. I mean I feel confident now to take my test (today or tomorrow by midnight) than I did. I still expect to flop it but at least I feel as if I have somewhat of a shot now.
Thank you so much, helped way more than my tutor! And helped me find out what I kept doing wrong all this time in my nursing chemistry class
never ever did i get how to do these sort of questions until now.
THANKS!
You were amazing at teaching this. Truly thank you it really helps I am in Chem Honours and I think this is just what I needed
THANK YOU! I struggled with this and just watched your video and it is like a switch flipped! Pretty sure you have saved my next exam grade!
You're welcome!
I love your video you explained in 15 minutes (less than that) what my teacher has been unable to explain in 1 week
Thank you ! keep uploading!