Introduction to chemistry | Atoms, compounds, and ions | Chemistry | Khan Academy

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A big picture view of chemistry and why it is fascinating. How chemistry relates to math and other sciences.
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Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today!
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Опубликовано:

4 окт 2024

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Комментарии : 510

@ese1666 4 года назад

He talks with so much passion

@fairyland6855 3 года назад

Hello, I have a question, is it possible, after watching only these lessons of the Khan of the Academy, to take sat? I am a foreigner, so I ask. Do I need to learn organic chemistry?

@educationnow1513 3 года назад

@@fairyland6855 what?

@samgeng5189 3 года назад

@@fairyland6855 Hmmm, I don't think SAT offers a Chemistry test; they canceled the subject test part. If you want to take the nationalized test, you should definitely check out AP exams. Edx and Khan Academy have AP Chemistry course vids which are great for studying. If you understand the course content, you can definitely get a 5 on the AP exam just by watching the videos. Also, I don't think organic chemistry is a thing for nationalized tests, although I am not sure. SAT only includes Math and Reading.

@josephanthony1655 3 года назад

He must be Italian...

@KJSTILES-pt5mf 3 года назад

Well thats when you good with something

@vernterrell4906 7 лет назад

There is nothing else like Khan Academy out there for improving your academic skills. They are cutting edge for learning.

@xLamont_ 7 лет назад

Vern Terrell Crash course?

@yelshatv1517 6 лет назад

Vern Terrell ikr they made me grasp a topic in just a few minutes that I've been trying to understand for bout a week from my teacher. I still don't understand my teacher

@yelshatv1517 6 лет назад

Their the reason I might have passed math CSEC this yr

@spyderguy4567 6 лет назад

The Greatest Of Our Generation crash course is a bit too fast really I mean you still learn stuff from it by replaying it until it sinks in but khan academy is just better in my opinion.

@kayliejoye9551 5 лет назад

For studying i use quizlet

@colza1025 4 года назад

Sal is amazing. So is chemistry. I really really wish my school teacher could teach chemistry like this. Unfortunately, he didn't and the chemistry class for me turned out to be all about memorising the periodic table, drawing the structure of all molecules. Never thinking about why and how. I then became a computer science engineer. At the age of 36, which is right now, I realise my real passion is in chemistry. For all the students who are reading this, sometimes the teacher is just not good and please try to learn from somewhere else. Don't lose your curiosity about the world. I lost it when I was so young and I want to find it back right now.

@ewseekhelp 4 года назад

Yo I don’t even understand what my Chemistry sir is saying. I’m just sitting with the confused look on my face....

@samwatches Год назад

I'm currently learning chemistry in school and this opened my eyes to the topic!! I have been struggling and hating chemistry but I realize that although my chem teacher is nice she's not a good teacher whatsoever.

@senaiteyob3641 Год назад

Same here at the age of 37. Can you please share your progress on it

@katv3116 7 месяцев назад

Im 30 and this gives me hope

@jacquelineebanks4805 4 месяца назад

@@samwatches I'm trying to be one, a good teacher. That's why I'm here, too! Keep up the good work of seeking out multiple ways of acquiring the knowledge!!!!

@thebudkellyfiles 6 лет назад

Wow, I have a doctorate from Cornell, but never had a teacher like this. This guy is EXCELLENT. I'm hooked.

@mirmohammad753 3 года назад

R u blender artist

@mirmohammad753 3 года назад

@Jackson DeBottis what papi

@samanthadonovan3214 2 года назад

He's off the chart.. Outstanding

@wakharkaratharv230 6 лет назад

Studying chemistry for years & now it makes sense

@manofallsorts6022 6 лет назад

Atharv Wakharkar I'm glad

@vaishnavaramjass 4 года назад

I want to study chem and.............. cure cancer ..................ik it’s a big dream that I might not achieve 😔

@c4llmeifigetlost485 4 года назад

@@vaishnavaramjass i guarantee you that a cure is possible. Hospitals and such dont make an attempt as they make more money off of those who are in need.

@hifiunicorn 3 года назад

@@vaishnavaramjass curing cancer is easy. it is getting people to see that how we are living is cancer causing.

@fiaradical5142 3 года назад

@@hifiunicorn what you said is so true...if only more people thought that way.....

@christ2551 3 месяца назад

I have doctorate degree in Chemistry from Duke University and never had any teacher who can explain like Sal. Our students are very blessed.

@nguyendang6178 3 года назад

After reading the comments, I feel so blessed I watched this video before starting to learn actual chemistry.

@Quboi123 2 года назад

I'm trying to find a new hobby for the summer and I always wanted to understand chemistry, so here we are

@Meowzadong 2 месяца назад

Omg i read this comment as im in summer trying to understand chemistry as my hobby rn

@SarahBurnap-z2p Месяц назад

Same!😂

@highspacefox 5 лет назад

Thanks Khan Academy! Wish I had this series when I was in school, would have helped so much and inspired so many interest i came upon naturally. Glad this is out there for the interested kids today!

@cortez098 2 года назад

Chemistry is so easy if this is the kind of professors we have.

@andrewlittle9569 7 лет назад

Chemistry is the programming language of the universe!!

@howiworkthisshi 4 года назад

Andrew Little that's physics

@samiwahid1727 4 года назад

REALLY

@ibrahimally5868 4 года назад

Well said

@surabhraj8761 3 года назад

@مُحَمَّد كَامِل - 𝐌𝖔 𝐊𝖆𝖒𝖊𝖑 isn't maths is language of universe. I think chemistry is base of existence

@armybomb9563 7 лет назад

thank you. I'm not even out of elementary school,and I'm studying to become a chemical engineer. this helped me understand what chemistry means thank you!

@mannyw_ 7 лет назад

Avery Allen wot

@disgraceful318 7 лет назад

I'm a senior in high school and I have no clue what I'm doing. Keep up the motivation

@marchveris 6 лет назад

Grace D and Avery just remember that you gotta stick with STEM major.

@spyderguy4567 6 лет назад

ARMY Bomb r/quityourbullshit.

@benitopatino8400 5 лет назад

Im a fetus and i am studying to become a Chemical Engineer

@jessicamccabe9814 3 года назад

My 10yo has been using KA for several years and is currently using their Coding, 4th Grade Math and Grammar lessons. My 6yo uses their Khan Academy Kids app and their 2nd Grade Math lessons. I pull from KA's World History and Science lessons to teach both of my youngest boys together. They both love studying Space and their queries have lead us to needing vids/lessons about chemistry. I knew I could look to KA to teach complex concepts in a clear and interesting way, so here I am...adding this vid to my lesson plans at 2am *heh*

@veryhealthy9962 Год назад

Heh

@greenlifesaves 7 лет назад

Thats a motivational video, even though i gone through medical studies, now feels important to study Chemistry in deep to understand basics which doctors cannot explain

@AvoirJoseph 4 года назад

Since it's quarantine Imma learn chemistry

@bonelesspizzamini8162 4 года назад

Same

@Gamingzone-123_ 4 года назад

Good luck, it’ll take a WHILE

@masol3726 4 года назад

same

@namraaah271 3 года назад

@@Gamingzone-123_ it’s still taking a WHILE

@generationz2758 3 года назад

I was tricked for a second thinking you said that 5 years ago I was shooketh

@jihue Год назад

i luv khan academy we went through everything together

@Foogi9000 8 лет назад

The only thing I associate with chemistry is breaking bad and Walter white

@higoralves3132 5 лет назад

Rick

@NeonTetrax 5 лет назад

Higor Gundin morning is a way of r to the price of a little bit of the company ihyymgyjg we have a special special event

@soleegaming3201 4 года назад

or Dr Stone... XD

@bonelesspizzamini8162 4 года назад

@@NeonTetrax Sir , Are you ok do you need a ambulance

@unclejeffrey2317 3 года назад

@@bonelesspizzamini8162 he’s colluding with aliens lol

@Jusscarool Год назад

In my previous school the only subject we covered in science was biology Makin me very behind in both chemistry and physics, This is really helpful tnx. (I'm 14 and about to start my GCSEs)😢

@cursorychemistry 6 лет назад

People who are just starting out in Chem101 typically do ignore the periodic table because they have seen it most of their lives (me included in the beginning). I think a goal that all introductory teachers should have is making The Table mystifying again. It's one of those things that you will never see the same way once it is accurately explained to you.

@leeleeb7413 6 лет назад

Cursory Chemistry Video recommendations??

@hifiunicorn 3 года назад

This was a really helpful video in understanding what the essence of chemistry is. You really put it into perspective for me when you said that even though we haven't figured it all out, we can still make use of the functional aspects of math and physics and use it to explain things in our universe. Great video!

@hayleyr5569 3 года назад

Sal got me thru linear algebra and stats ten years ago and now is helping me with chemistry for vet science :) thank you

@amss6433 11 месяцев назад

I am in the military about to undertake my A levels years after I left school and I didn’t have RU-vid etc when I was a youth so thanks Mr Khan for giving me this chance to improve my learning

@americafrida7534 Год назад

That was awesome. I never got to take Chemistry because of leaving hi-school early due to illness. When you get ur GED's to finish it's only basics. I am hoping I just found you & you teach a class on Chemistry!

@RedabowAndBusmalis 8 лет назад

Always stuns me how the study of the minute blocks of matter that make up the existence we live in can be the most overlooked of the three core sciences. Always pleased to see Khan Academy bearing the flag for Chemistry, helped me get through all levels of my education and shaped me into the scientist I am today!

@johnstillman2935 7 лет назад

Sal you are an awesome individual , I am gleaning from your discourse that you have an understanding far beyond these simplistic topics you are teaching

@강예담-e8s 3 месяца назад

- I was very impressed by the part where the lecture was made easy for even beginners to understand by comparing atoms to Legos. I was very interested in the content of the lecture, which said that all theories were supported in the order of mathematics, physics, chemistry and biology.

@ThanhNguyen-sk6uc 8 лет назад

guys I'm nervous for my first college chemistry class:/....

@ThanhNguyen-sk6uc 8 лет назад

Kingxander123 I got an 80. Not great but I learned so much lol

@Engineer9736 7 лет назад

Thanh Nguyen It's good that you're nervous. It would be worse if you wouldn't give a shit about it ;-)

@giggityking6505 6 лет назад

So far I got an A-

@MegaSkills9 4 года назад

It's ALL about the Electrons. Class dismissed. :-)

@meldahneem2675 4 года назад

Eat a apple it wiil help 4 years later

@olive444 3 года назад

I love how he talks about maths as a common language. He loves maths. :)

@ssc396 4 года назад

Khan Academy + Crash Course > School

@brunopanger5451 8 месяцев назад

Bro, for the first time in my life I actually enjoyed chemistry. Your view on chemistry really makes it very lovely and interesting to listen. It seems like your passion radiates through your voice which makes even chemistry fun. Plus you sound simillar to Jeff Cavaliere from Athlean-X haha. Thank you for your enthusiasm and knowladge.

@proanimator. 8 лет назад

Sal is awesome

@bryannguyen8440 8 лет назад

He is awesome

@flashhhyy3009 8 лет назад

yeah he is

@andrewlittle9569 7 лет назад

yeah he is

@shanghaichase7784 7 лет назад

So is Q

@redboi_ 3 года назад

@@shanghaichase7784 so is murr

@lesleywhelan5904 7 лет назад

Awesome Intro!!!! I finally grasp the definition of Chemistry. Love listening to your voice!

@garimatiwari5198 3 года назад

I have never been so intrested , fascinated and impressed by any thing.

@SamKScarlettBlack 8 лет назад

he sounds so happy and excited °^°

@sachisahu1100 3 года назад

Yeah

@akshathole6641 7 лет назад

Heyyy Mr. Khan..... U are doing an awesome job... Hats off to your teaching.... Keep on going....

@arxangelmixael 2 года назад

You guys are great. A fluid when supercooled, only freezes because of acoustics. If completely it won't freeze, even at absolute zero. Very cold beverages ahead!

@UndreamtJoker7 5 лет назад

Thanks Khan Academy! Right when I was feeling down about Chemistry at the end of the semester you've brought me back around, like always! Chemistry is awesome!!

@neurokid1 8 лет назад

Whoa is the chemistry section getting an upgrade?!?!?!?!? OMG YESSSSS

@audreyperryman175 3 года назад

I love how excited he sounds

@raushan2.5 Месяц назад

Hey iam from India 🇮🇳🇮🇳

@superhamsniper4487 3 года назад

oh, its khan academy, Ill definetly want to donate to this, its very helpful when i want to know how things work.

@damianfarias9501 3 года назад

I don't even know what an atom is tbh, or molecules. These things flummox me every time I try to wrap my head around it. Cuz I'm like: what's an atom? What is it made up of? Ok, It's particle of matter, what's a particle of matter? What's matter? so it's an endless loop.

@betbow7439 Год назад

Hahaha please this is exactly me! I want to be an engineer and still don't fully understand what an atom is but we got this. It will take time but if we try we can understand it

@Anubis7169 6 лет назад

Chemistry... is.. the science.... of change.

@thestudentcafe 3 года назад

Really engaging introduction to chemistry.

@mazouzinoumidia9320 7 лет назад

sal has the most charming voice ever

@ch4lk250 Год назад

Mad scientists are, indeed, a very important part of chemistry! I struggle to believe all of the people that got us here were where completely sane.

@rawandunfiltered4048 2 года назад

The true essence of chemistry is the mystery it holds inside that lights the curiosity of humans to explore

@curtpiazza1688 Год назад

Great pep talk for the study of Chemistry....whets your appetite for more! 😊

@MrMikkyn Год назад

Its interesting how we’ve separated them. Because there’s overlap sometimes. Its mentioned in the video how there is overlap. Like for example the way light enters the eye, that’s not just a biological thing. That’s also physics. And then the neurons in the brain, there is a lot of potassium and sodium stuff going on which I am still learning about. Ions, positive charges, negative charges. It would be be good to have a theory of everything.

@scottiusnevious4838 Год назад

school fails to show this in the light it deserves. its all about standardized testing and making students. It should be about the discovery of life, reality, and truth. I think it was Sweden that lets kids pick what they wanna be, then tailors them throughout schooling to be the best in their fields.

@israrkarim65 2 года назад

Chemistry is cool.

@biplobdeb4884 11 месяцев назад

This is very important video of chemistry students

@donjoseph73 Месяц назад

Dude what an awesome description! Thanks!

@Mr.G626 7 лет назад

excellent series.

@rabeyasultana7086 2 года назад

I was bambling thru chemistry, thanks you, your talks kind of calmed me down

@hamzablackfyre3741 6 лет назад

i wanted to know that does this whole chemistry course on khan academy cover everything in high school and some college.Just how much does it cover.

@tasneemmohammed1821 4 года назад

I watch this every year , so good Khan academy

@kierankennedy6971 21 день назад

27 years old and trying to teach myself chemistry. I took grade 11 Chen, and never went. Didn’t do assignments, didn’t show up for tests. Somehow passed with a 53, but I think it was out of pity. If I could change one thing about high school, it would be studying all the hard sciences fully.

@adi2598 Год назад

i love this video. i love how i can feel the excitement of the speaker. it makes me wanna go deep into different fields of sciences, not just chemistry:D keep it up! you make studying fun and exciting for us.

@Hunnyy_yyy 2 года назад

i have never done Chemistry until Uni and i was actually having a mental breakdown before watching this :'( Thank you for shedding some light onto me

@jansarmiento5321 Год назад

One of the beauty of learning chemistry is that you know from the back of your mind some being from exoplanets are studying it too and we obey same physical law

@SheikAbdulAzizBinBaz 4 года назад

Wow. I’m 10 yet i can still do various chemistry problems and even calculus all because of khan academy. I owe a huge thank you to you Sal and everyone at khan academy for helping me dedicating my life to learn and even making it a full time hobby of mine.

@katrinapaner9275 3 года назад

CHEMISTRY IS SO COOL! I really thought science was just science but noooo there’s physics and biology and many more! Everything we see around us is related to science and more specifically chemistry?? WOW THAT IS SO COOL! Thank you Khan Academy, this made me look at our world in a different perspective. You are cool too 😎 keep it up !

@BhimKumar-ks4kc 4 года назад

Khan academy is the most helpful acedemy for concept Love u 😘😘

@Henrysweenie 3 года назад

using this to learn chemistry in two weeks before my first exam since remote learning is garbage

@jprogaminggd 6 месяцев назад

Your handwriting is magnificent sir. I also love how passionate you are.

@samanthadonovan3214 2 года назад

Thank you beyond belief Khan - this is what I've needed since school.. you've created an outstanding Academy.. I'm a big fan 🙏

@lukassilvera1027 5 месяцев назад

Thanks for the video, it helped me to practice chemistry and english at the same time.

@ahmettugaykaya7670 Год назад

Thank you for this incredibly well-designed series.

@gdasilva3531 Год назад

I am so stroked to learn about chemistry after watching this! Thank you!

@Lnabbg 7 месяцев назад

Who knew I would need this vid 7 years later Thank you khan academy

@kabouch 4 года назад

Would you please urgently answer this question: Cl atom ,for example, has 17 positive protons and 17 negative electrons so that the atom has to be this way uncharged or charge-balanced, why then in nature it tends to dorm covalent bond with another cl atom or ionic bond with H?

@jceeross6763 Год назад

I loved this thank you guys

@joffreybaratheon7489 4 года назад

CHEMISTRY MUST BE RESPECTED

@mak_variant 3 года назад

Seriously , i thought i should skip this video after watching that equation for a min but u should watch the completely

@apexredator5048 3 года назад

Love this vid i now see why i picked this subject at school hearing about it sounds fun

@alinapari3734 4 года назад

This video helped me get into a 10 out of 10 rating school!

@laomark9583 8 лет назад

thank you gys, as usual. great intrnational communitarian work. Keep it on!

@raomateen6725 4 года назад

hello khan academy actually i was stuck at chemical reactions arent khan academy teaching displacement reactions? i logged in khan academy as well but i cannot find a single video of displacement reactions i would be thankful for your kindly reply

@elia.0713 6 лет назад

Lovely video, science is truly exciting

@CHEMMYSTERYwithRuheena 4 года назад

its really splendid

@josephtete5602 4 года назад

Yes this video will help me to, qualify in common entrance exam for PG.

@nopas6058 4 года назад

This video should be called ( Chemistry motivation )

@chotankumar0140 5 лет назад

This made my daughter top in whole class

@camila-nu3hq 8 месяцев назад

I’m here because I’m about to start learning chem as one of my required university classes for forensic investigations 🙏🏼. I’m trying to learn as much as I can 🙏🏼

@hibanassar5475 3 года назад

Very nice presentation keep the good work

@bikash_bhai Год назад

Thanks for your reference

@leem6218 4 года назад

Basically Sal's reason for why I should love chemistry is the same reason my mom gives me for eating my food. :P Love KA!

@missacab7086 4 года назад

How old r u 💀💀

@dodoodood.9421 4 года назад

Miss ACAB lol

@leem6218 4 года назад

@@dodoodood.9421 ??? how can what I said be in any way interpreted as against the police?

@yannaingtun3675 2 года назад

@Khan Academy It would be more better if you cover about Middle School Chemistry.

@marsacmosaic 7 месяцев назад

Watching these without the pressure of doing in regards to school is a good way to watch this channel lmao

@herbertlincoln8412 Год назад

Thank you

@klorine6898 Год назад

i wish i cared more in school, i miss this

@Azmera_ Месяц назад

I’m here because I found an old Physics notebook of mine and now I’m interested in all forms of science and math again.

@healingtheinner1 2 месяца назад

Awesome video man, thanks, very interesting

@Larry21924 8 месяцев назад

This piece is a standout; similar to a book that stood out for its unique treatment of these ideas. "The Joy of Less: A Minimalist Living Guide" by Matthew Cove