The periodic table | Atoms, elements, and the periodic table | High school chemistry | Khan Academy

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The periodic table organizes elements into groups and periods based on their chemical and physical properties. Elements in the same group share similar characteristics, like reactivity. The table is divided into metals, nonmetals, and metalloids, each with distinct properties. Key groups include alkali metals, alkaline earth metals, halogens, and noble gases.
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who's here from school

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Meee!!

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Who isn’t here from school 😂

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me

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@@mcm7119 me. Im actually only in 4th grade, but i love science

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Trying to figure out why people would ever dislike these? Or are they just protesting against school?😂😂😂

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its bots and other organizations who make vids like this

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people can be bad minded

[@AfroPick82]

Understanding & Common Sense is sadly not so common nowadays. Instead its replaced with fear & ignorance on average.

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Some people just find these super confusing

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bruh nobody rlly like school smh

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TIMESTAMPS
Groups 0:09 - 1:31
Periods 1:32 - 2:14
Alkali Metals 2:15 - 3:25
Alkaline Earth Metals 3:26 - 4:01
Properties of Metals in General 4:02 - 4:50
Properties/Contrast with Nonmetals 4:51 - 5:11
Halogens 5:12 - 5:52
Noble Gases 5:53 - 6:17
Not really specific, lil summary 6:18 - 6:42
Metalloids (The Zigzag Line) 6:43 - 8:38
Outro 3:39 - 8:55

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I learned a lot in a few minutes . your method is better than the chemistry teacher.

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2nd thought. Technically, he is now a chemistry teacher...🤷🏽‍♀️

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Facts

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2020 kids where u at?

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Hi

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This is helping me a lot in our online chemistry class. You're awesome!

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thank god I watched this video because all of my knowledge about elements argon .

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That was hot

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what does that mean???

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Taylor Kotch ‘’f

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@@_buany8701 I don’t think that’s Sal, if you watch some of his videos back in 2010 or something, he still sounds the same.

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Pay no mind to the hate comments. You're an excellent mentor. Keep the vids coming :-)

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thank you !! this helped me a lot for studying for my first chem test !

[@thedemonslayerguy.]

Truw

[@chloebutler8438]

I was gonna make a sodium joke, but Na.
Ok I have a different one:
2 scientists walk into a bar. One says, "I want H20." The other says, "I want H20 too".
The second one dies.
Ok, here's a potassium joke. What, you don't want to hear it? K.
Periodic table puns are funny, AmIrITe?

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I didn't get it.

[@user-qf6bi8zb2h]

He asked for “H20 too”. It sounds like H2O2 which is hydrogen peroxide and I think can kill you

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thank you khan academy

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I’m not here for school .. just trying to see if this will get me some sleep

[@chemistryandscience5976]

There are four blocks namely S, P, D and F in the Modern Periodic table. Element are classified into four Blocks on the basis of valence shell electronic configuration. Those elements which have their outer most sub shell is S, constitute to form S block. Similarly p, d and f blocks are formed on the basis of outermost valence subshells p, d and f.

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Yeah this is also one of the basis on which periodic table is classified

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Excellent
Saw this as the first video and subscribed.

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I’ve learned more from this video than I have all year in chem

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Thanks for making me understand elements better.

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concise !

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Learned Alot with this explanation more than my teacher's explanation about the topic

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this helped me a lot, thank youu!

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Thanks sir...u explain waaayyy beter than my chemistry teacher❤❤

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I am now learning and memorizing something I will forget after a few couple of days :)

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Hi

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Thankyou. It helped me make a concept about periodic table.

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Thanks for helping me Ace gen chem. Also, your videos on some calculus subjects were incredibly helpful. Khan is the OG.

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Большое спасибо, очень интересные видео!

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I'm always whacking all your periodic table videos I love them

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I got lot out of this. Thank you.

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Thank you ☺

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Helpful

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I’m about to start this unit , next class in PRE -AP Chemistry 1 which is on Thursday we finished our unit about Isotopes , Average Atomic Mass as well as writing the isotopes in hyphen and nuclear notation

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Are their any unclassified/secret, non recognized or not published elements in the periodic table ?

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12?

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I r in Secund grade rite now al
aslo

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I have a midterm today thanks

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Who has chemistry exam tomorrow?

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I do

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Me

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nice explanation

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Very helpful for Revision for my daughter's test

[@ruthpalad3802]

1. Locate the metals, non-metals and noble gases in the Periodic Table of Elements. Color the area with metallic elements blue; the non-metallic elements yellow and the noble gases green.

[@lovelyesther]

I remember dumbass 3rd grade me was trying to learn this to be cool

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Im a little bit confused of groups and family in periodic table . Are they d' same? Why other element in this video doesn't have family? Like the group 3-12.

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thanks for the video it was really good I used it for my homework

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Where are my 2020 online students at?

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2:22

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No

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Mrs. brewingtons class where u at

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I want some more brief explanation

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good

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guys lets spam this youtube video!

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My chem teacher got mad at us so he just didn’t teach us this

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can someone tell me about mendeleev and how he ordered the periodic table.

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Lemon Bleach search " periodic table explained" and check out the video made by Crash Course.
That'll help you

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Im learning

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this is yes

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I think the line that separates the metals and nonmetals should start on top of boron then we zig zag (I'm not sure tho)

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thank u for this.. very helpful

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np bby

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I need this I start 8th grade casp test tomorrow which cover 6th through 8th and we can say 7th sucked last year

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❤❤❤

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what about the bottom part of the periodic table the elongated one you missed that section.

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if you watched the video you'd know that he said he didn't have enough room to cover it.

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lol

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I would tell you an electron joke but it would just be negative

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@Michael Jordan 😂😂lol

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lol

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when ur in 7th trying to learn more about the periodic table and memorize them all 👏😫😩 well i learned numbers 1-58 😃

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Facts

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ไล่หาจาก Na ,Fe ,Ag, Cu , Zn, O, Al ,Si

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Pls sir propose this video in hindi🙏🙏

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2021 Guys anyone

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what are sets "noble metals", "solenoids", "semimetals", "rare earths", ...?

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How come in periodic table acuret ser

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Ty for helping me

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Wow..
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I'm in 7th

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Ana Mika saem

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In my chemistry lecture, we actually discussed how hydrogen is indeed a metal. There is a reason it is placed where it is on the periodic table. :)

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Can u explain?

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You saved my life

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Who's still here in 2021?!

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So helpful

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AL

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Aluminium

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Juelisse villafane

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Na-sodium, Li-Lithium

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Interesting.

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Excellent