Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy

How elements relate to atoms. The basics of how protons, electrons and neutrons make up an atom.

Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful.

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[zcookielove]

i just learned more from a 13 minute video then i did in my entire school year relating to science so thanks!

[GalaxyMessier]

Can you please make a lecture series on Quantum Physics. Everybody would love that. Thanks. 

[garibaii]

i mean why can't all teachers do what he does. he takes you to the fundamental part of it and explains it like no one could. i just love the academy.

[PBTKaizen]

Hey ya'll -- to those watching--- i also find Khan Academy phenomenal as far as teaching style and their ability to present a concept in the most basic (sometimes story telling form) that makes us realize the types of teachers we've had in the past and allows us to go back in time and learn the very basics of something we dropped along our path of education, simply because we thought "oh i'm not good at science" or "im not good at math"....Math & Science are the foundation on which this universe came to existence and continues to exist...to study it is a must, to understand it is a major challenge especially those prone to the artistic aspect of life, but how much more enlightening and enhancing do things get when we can intersect the two worlds because we have just gained new knowledge. Khan Academy has the capability to do that.... I watch their videos even when i dont have to prep for anything, just for enjoyment of learning something I do very much love this channel and as much as i wish i could be a monthly contributor, at the moment i will contribute in small amounts when i can as i do believe we ought to support those who put in the effort to give us high quality education. So please consider donating as well, even if 1000 of us donates just $5 per person, that's a good chunk of money....We push for Free Education in United States through our accredited schools -- be it ivy league or non ivy Academy's education is on par with Ivy League and frankly speaking they are indeed providing the education we need....they have the ability to help people connect the dots in simplest please support them!

[amok]

If he is using a mouse and not a pen to write on the images, he is the highest ruler of everyone who tried to use MS paint with a mouse

[Thelizzardcat]

You can tell that he really loves what he does. And when your teacher really enjoys what they are teaching, the subject becomes a lot funner to learn! ;) thanks

[АндрійКоропець-гщ]

I hated Chemistry in school, but today, on Saturday I wanted to watch some videos and... it is so interesting and easy learning for me) Thanks khan Academy :)

[MareBear]

I absolutely love this guy! I have enjoyed every single video I have watched of his. What a fantastic teaching style! I would love to actually have the opportunity to talk with him in person. Please keep up the great work! You are making a difference!

[nabilafiddin]

i'm a grown up trying to learn basic chemistry.
thaks, sal. this is very helpful.

[MilkySandwich]

Everything gets amazingly entertaining with Khan Academy !
I am already excited about learning Chemistry.
I am going to devour your videos !
Thanks a lot for the quality material !

[shahriarfahim]

Sal is the best teacher I have ever seen in my life.He knows how to represent any topic in a unique way.

[anthonyae]

If he was my teacher, I would've loved chemistry.

[swhatnw]

This is the first time I've ever been excited about Chemistry (after college- entering Medical school), thank you for your videos !!! They're amazing.

[Akshay-lywc]

after a 7 years of time , It all feels nostalgic and chemistry was my favorite subject back in school days

[djlloss]

This is something that schools ask you more questions about directly than actually giving an answer to the class. Even if the professors do, they just never actually make the answer clear at all.

I learned something from this that my High School teachers failed to get across.

[adioct]

Sal's an amazing teacher, and his voice is so relaxing to listen to - which plays a big part for me and learning becomes fun in this way!

[BeniLehelCal]

These lessons are history in the making! In the name of humanity THANK YOU Khan for what you are doing.

[kalietidwell]

I was going to make a chemistry joke (which are tin out of ten) but all the good ones Argon. Don't like my jokes? I think that they're worth their weight in gold.

[heatherb.]

I love how his voice is so exciting and keeps you interested! Good enthusiasm & cute voice! :) 

[puplerom]

Every Khan academy video's comment section be like: OMG I literally learned more in this 13 mins than I learned in 100 years in school.