Chemistry: Introduction to the Periodic Table - Dmitri Mendeleev
FREE Online Course: www.socratica.com/courses/che...
BUY Practice Tests: bookstore.socratica.com/?tags...
JOIN Chemistry Club: snu.socratica.com/chemistry
⬣⬣⬣
The periodic table is the most powerful tool chemists have for organizing chemical information. Without it, chemistry would be a chaotic, confusing jumble of seemingly random observations. What makes the periodic table really invaluable is its use as a predictive tool. You can predict a lot about the chemical behavior of an element if you know where it is on the periodic table.
We give credit to Dmitri Mendeleev for the first Periodic Table. He organized the elements in his table in order of atomic mass. Henry Moseley modified the table, ordering the elements in terms of atomic number. This is the periodic table we use today.
BREAKING NEWS: The Periodic Table now has a FULL SEVENTH ROW! Elements 113, 115, 117, and 118 : www.theguardian.com/science/20...
⬣⬣⬣
LESSON CHAPTERS:
0:00 Introduction to Periodic Table
0:34 What does each square tell you about each element - name, chemical symbol, atomic number, atomic mass
1:10 Metals - where metallic elements are found on the periodic table
1:22 Nonmetals - where non-metallic elements are found on the periodic table
1:37 Metalloids - where metalloids are found on the periodic table
1:54 Elements are listed in order of increasing atomic number
2:04 Each element has a unique atomic number
2:11 Why elements are organized into columns - periodicity of chemical behavior/ Periodic Law
2:48 Columns are called groups or families - elements in the same group have similar chemical properties (valence electron configurations)
3:02 7 Rows called Periods - correspond to energy levels
3:15 Alkali metals and alkali Earth metals - s orbitals being filled
3:27 p orbitals being filled on right side of periodic table
3:34 Noble gases have filled valence shell
3:42 Transition metals - d orbitals being filled
3:50 Inner Transition metals - Lanthanides and Actinides - f orbitals being filled
4:09 How Groups are numbered
5:09 Changes to the periodic table
5:24 The first periodic table (in Mendeleev's handwriting)
5:54 The work of Dmitri Mendeleev 1869 - in order of increasing atomic mass
6:07 Lothar Meyer
6:25 Mendeleev left gaps in his table and proposed missing elements
7:14 Henry Moseley modified periodic table - re-ordered by atomic number instead of atomic mass
8:38 92 Naturally occurring elements
8:41 synthesized elements
SUBSCRIBE so you never miss a video!
bit.ly/SocraticaSubscribe
MORE Chemistry content on our website
www.socratica.com/subject/che...
⬣⬣⬣
SUPPORT our channel:
Patreon : / socratica
PayPal donation: www.paypal.me/socratica
Bitcoin : bc1qda47tgfyk67lxa7yqn8y5m02hjcglghsd5c58n
Thank you!
⬣⬣⬣
RECOMMENDED Books & Resources:
Socratica Practice Tests: shop.socratica.com/collection...
How to Be a Great Student: amzn.to/3t5jeH3
239 pc Chemistry Molecules Model Kit: amzn.to/3DhlG3n
Brown and LeMay Chemistry: The Central Science
14th edition: amzn.to/3fiLR1G
McGraw/Hill Chemistry by Chang & Goldsby amzn.to/3UclbP3
Uncle Tungsten: Memories of a Chemical Boyhood by Oliver Sacks amzn.to/3ffeRau
Napoleon's Buttons: How 17 Molecules Changed History amzn.to/3sIXuBW
⬣⬣⬣
Written and Produced by Kimberly Hatch Harrison
About our instructor:
Kimberly Hatch Harrison received degrees in Biology and English Literature from Caltech before working in pharmaceuticals research, developing drugs for autoimmune disorders. She continued her studies in Molecular Biology (focusing on Immunology and Neurobiology) at Princeton University, where she began teaching as a graduate student. Her success in teaching convinced her to leave the glamorous world of biology research and turn to teaching full-time, accepting a position at an exclusive prep school, where she taught biology and chemistry for eight years. Kimberly co-founded Socratica Studios.
⬣⬣⬣
Creative Commons Picture Credits:
Dmitri Mendeleev Periodic Table monument in Saint Petersburg
en.wikipedia.org/wiki/File:San...
Author: Heidas
Plasma globe video
en.wikipedia.org/wiki/File:Pla...
Author: Colin
#Chemistry #PeriodicTable #EducationalVideo
Our free online chemistry course will help you level up and learn more: www.socratica.com/courses/chemistry
Teacher: "Do you know the formula for sodium hypobromite?" Me: "NaBrO." Teacher: "What about the symbol for nobelium?" Me: "No." Teacher: "Well do you at least know the symbol for sodium?" Me: "Na." Teacher: "... A+! :D"
I love this!
😂
lol he said the correct symbols and formula for all. FUNNY!
It seems that Mendeleev was a smart brain. That shit with gaps and predictions is fucking genious.
Had a test on this video/ a video test .. i got a 90% thanks .. NICE VID.
Well congrats
Congrats I’ve one tomorrow
I have a test tomorrow I'm revising because I really don't understand it
*Without the Periodic Table, Chemistry would be Chaos*. You see the Periodic Table in every Chemistry classroom. It's so familiar, it's easy to take it for granted! Most importantly, the Periodic Table provides chemists a *predictive tool*. Here we explain how it was developed and how it organizes chemical information.
yeet
Socratica ub
Excellent clear introduction
Thanks for this video I have never been able to understand period table but with your video now I'm able to understand thank you so much
Best science channel on youtube......their chemistry videos are always understandable
What I enjoyed most is the way you presented your knowledge That's so cool.
Excellent.So helpful for amateurs like me! Thank you
Have not been a student of Chemistry nor Physics. And l did manage to follow quite a bit, not bcoz am that quick on the uptake ( in matters of pure Science at least ), but it was the AWESOME presentation in terms of clarity, relevant details, and yet NOT long-winded so as to go above my head. To have been a student of the Humanities aka the Social Sciences, sit attentively thru this video speaks volumes for the WONDERFUL Professor Kimberly. Kudos to this channel and the team. Am gonna subscribe pronto out of pure interest. Respect n Greetings from lndia.
acha to india waly bhi respect karna janty hn wao FROMPAKISTAN
Such amazing and clear explanations
I remember being educated about the table of contents; I never knew how important they singular were. Great science glass. Can't wait to dissect a frogy again and become a Dr of some sort
Awesome videos Socratica!! I just discovered your videos and I think that they are FANTASTIC!! THANK YOU FOR MAKING THEM!!! :D
Bianca Beluga Thank you so much for your kind comment! It makes us so motivated to make more!! :)
Socratica Please do so! Make more videos!! After seeing so many rubbish on the net and You Tube this is one of the best things I ever saw!! These are one of the best educational videos I ever saw on You Tube!! I haven`t saw all your videos so I will ask you do you have some videos like this maybe from biology,medicine or any other science?
Bianca Beluga We can't tell you how much your kind words mean, because we have been working hard to make good content and when we reach someone like you it makes it all worthwhile!! So far we have been focusing on Math and Chemistry, but we also recently started an Astronomy playlist. We are planning to do a Biology series later this year (one of us on the team, KHH, is a molecular biologist). We also recently filmed our first physics video on Electromagnetism, so that is in the works! Thank you again for watching. We love our fans! Please share with your friends! :)
Socratica Ohh you made me so happy with these news about your latest work and some work you will be doing in future!!! :D I can`t wait to see more fantastic work of yours!! I am specially interested in Astronomy and Biology but and some good lessons from Physics would be great too!! :) Big thanks for your wonderful work and big greetings from Serbia!! :D
+Socratica ~~~
Well done, great introduction.
its very nice video and very nice explanation God bless you
thank you it was useful
I have a test tomorrow (as of October 11th) and this is very good study material, thank you 👍
Love the video .
Nice description 👌
i had a test on this and got... GOOD! thanks for the vid!
Excellent video , using animation tools
what a meticulously precise explanation ... Congratulations and lots of blessings for future success !!
Thank you for your kind message! We're so glad to have such appreciative viewers - it inspires us to make more videos! Best wishes from Socratica
+Socratica biuflfm
YES, meticulous AND precise ! AWESOME presentation by Professor Kimberly.
I like it so much! thank u very much🙏👏👏
fantastic teaching
Extremely good explanation
You do a fantastic Job. You all teach very precise and clear. Thank you very much.I would like to hear more of you, primary theoretical chemistry with examples, if a reaction can happen with definition of entropy, enthalpy, Gibbs-enthalpy and so on.
We're working on a new set of chemistry videos now! Thanks so much for your suggestions, kind Socratica Friend!! 💜🦉
@@Socratica When is it released?
Good job!
My teacher put this in our performance task to answer the questions I literally solved it so fast Ty sm 😭🤞
This is wayyy better than my teacher thanks alott
Thank you.
I was looking for twig in youtube because I forgot my login but i honestly learned more.
i liked how u explained
Really helpful
How useful! Thanks, good videoo
Thanks a lot for the perfect explanation. I have a question; You said that the "Inner Transition Metals" are in 2 rows (Lanthaides and Actinides) and 14 columns, but I am counting 15 columns. Where is the mistake?
O MY GOD, U R SO UNDERRATED, THANKS FOR THE PERFECT EXPLAINATION, I JUST SUBBED!!!
We're so glad you've found us! Please do share with your friends, because it's not always easy to find the good stuff on YT. 💜🦉
@@Socratica I SURLY WILL!!
This video was uploaded before the 118 element came
Nice Video I love learning ❤️.
Great video. Good speaking voice.
outstanding vedios.... keep it up it helps me alot
please,could u share the PDF edition for these session??????
Awesome video!!
Question I'm confused I'm seeing a periodic table in old videos and in my book with 113 elements and on the internet in 2021, there are tables that have 118 elements with additions of Mt, Ds, Rg, etc and those aren't in my chemistry book. I'm seeing where these elements are unknown or lab-made, do I really need to know those additional unknown elements at the grade 11 CSEC level?
To make things more complicated about chemistry is it's stability. Elements with a low-value atomic number is stable and the higher the value of the number gets, the more unstable the element is, except, it's not. The elements at the end of the Periodic Table; namely Nihonium, Flerovium, Muscovium (I know it isn't spelled that way but it makes me comfortable rather than Moscovium), Livermorium, Tennessine, and Oganesson, are more stable than they look like. Scientists may have discovered the "Island of Stability". Elements around this Island are stable, hence the name, so that means the last 6 elements may be more stable than what I just said about stability in terms of atomic numbers. No one really knows why it's there or what are its properties or even (speaking scientifically) what it really is. Theoretically speaking, elements higher than the value of the atomic number of Oganesson: 118 can be stable though we don't know where it is in the enlarged periodic table or which element it is closer to, we can conclude that the Island of Stabilty has to be somewhere in the atomic numbers of 120-140. Other than the stable elements we have, this Island may serve as a bridge to more elements being added into the Periodic Table, although this may take a lot of effort AND time, and the synthetic elements may as well just dominate the whole periodic table sometime in the future. Overall, this is just some one theory I have while I was browsing the Internet and I might as well have taken a peek into it, so in general, the Island of stability is a discovery just recently found that may serve as a bridge to the enlargement of the periodic table and to the making of new elements to add into the Table itself in the near future. Note that I am still not in High School (although I will be next year) and in our school, we still aren't discussing this yet because it's too early for us to learn it as some may consider it in our age complicated yet I am able to discuss to you this complicated Chemistry we have here about the elements themselves.
May I know what application you used in making this vdo, please?
i have to watch this but pretty interesting
what is the name of the background music?
perfect introduction to the periodic table....
+sahitti nerkar You are very kind, thank you! We're so glad you enjoyed our video. Thank you for watching!
I like this video. U r very smart
How can you tell which one is an element or not. Or metals
nice vid
The scientific Pokedex
Lmao
lEt'S gO sODiUM.
Ayeh ayeh ayeh
At what point in the video did your eyes glaze over? I tried, I really did :( You guys are legends!
I just read the comments >:)
Mam is there any difference between mass number and atomic mass
I am inspired
much inspired
Thank you so much.
u r very good
Few mistakes here and there : He is not part of the "p orbitals being fully filled" since it does not have any p orbitals. The d bloc isn't only made of transition elements.
I assume this video wasn't for total beginners because too many things were left undefined, like atomic number, atomic mass, S-T-D-F orbitals, Valence electrons. Now I have to look those things up.
This is good
i love the video and my school is using it 😃 a question : is the number of periods equal to the number of energy levels??
Basmala Tamer basmalaaa ana Mona Ashraf 😂😂 la2itek Fl comments masha2allaaah
Fdaye7😂😂
We're so glad to hear you are seeing our video at school! Please pass on our thanks to your teacher. :) Yes, the periods correspond to the energy levels, so we see up to 7 energy levels. Theoretically the energy levels could keep going, but we only see these 7 energy levels in the elements here on Earth. If you study more advanced chemistry, you may learn about "energy bands" or "electron bands" in crystalline solids. But that's a story for another day! Thanks for your great question!
My school is also using it, great job ! Came here as asked from the teacher 😂
Rainie That's awesome! Let us know if there are other topics we can help with. We're making more videos all the time. Thanks for watching! :)
I have to say, Plumbum is my favourite.
Nice
nice
Great video except group 2 elements are the Alkaline Earth metals, not 'alkali earth'
osome vdeo
It is not possible to have the periodic table go indefinitely. When the nucleus gets too big, the repulsive Coulomb force of the positive protons will be greater than the strong nuclear force that holds them together. The strong nuclear force becomes insignificant when the protons are far enough away, and that's what happens when the nucleus gets too big with more and more protons packed into it.
I’ve a test tomorrow on this video, wish me luck
oh my gosh GOOD LUCK, we're rooting for you!! 💜🦉
@@Socratica thank youuuu
Welcome to Socratica! We make videos that help you learn MORE. If you'd like to be notified when new chemistry videos and products are coming out, you can join our chemistry newsletter here: www.socratica.com/email-groups/chemistry Thanks for watching!💜🦉
first this is so good i really understand now second any one came from El-moaser book cuz i think im alone
I think either God or higher-dimension Beings enlightened Mendeleev for this chart.
At 1.14 on the timeline, ...error in depicting left and right ....should be the opposite....
I don’t even have a chemistry class, I just wanna learn this
Sometimes when you're just curious about something, that's when you really level up your understanding! 💜🦉
Both my text book and tutor have given the information that the atomic number is at the left bottom corner of the elemental symbol and the atomic mass aka nucleon number, is at the right upper corner of the symbol. this vid explains it the other way around.. y?
Hi pinup girl! Good question. You're going to have to look at each periodic table and examine what information they are displaying. All periodic tables are not the same. For example: IUPAC - atomic number at the top, mass at the bottom bit.ly/2dA8mfE Prentiss/Pearson - atomic number at the top, mass at the bottom: bit.ly/2dOie3q Royal Society of Chemistry: atomic number and atomic mass both at the bottom rsc.li/2dOgeYF ... You might be thinking of a separate kind of shorthand writing, where you write the proton number and nucleon number on the left of an element. But that generally doesn't appear in a periodic table display. But you never know! You really need to read the caption of a periodic table to be sure. Thanks for watching!
Socratica thx!
I loved mine chimestey and physic chimestry for backlor .....but it not usable here iran and not benefite for fincial jobs..i m teacher elementary
Great
Why are there 3 groups under VIII B?
Found this video’s link from my science book
NEATO!! What book is it?
What's the difference between an alkali metal and an alkali earth metal?
The alkali metals are found in group 1 (the first column), and they all have similar chemical behavior. It's easy for them to lose an electron and become positively charged ions (thereby achieving Noble Gas electron configurations). The alkali earth metals are found in group 2 (the second column), and they are all similarly behaved to each other. They commonly lose 2 electrons to get a +2 charge. All of these (all the alkali metals and alkali earth metals) are metallic, and so they all have similar characteristics that are common to metals.
Socratica Thanks! But I don't understand why earth is in the name of the alkali earth metals.
The Goodly Dragon Ahh, that part comes from really old chemistry. In ancient times, people called some compounds that they thought were elements "earths." The name stuck, and they still use it for the metals that were contained in those compounds. Here's a mention on Wikipedia: en.wikipedia.org/wiki/Earth_(chemistry)
Socratica Huh. That's fascinating. I guess it's like how gaining electrons is called being "reduced" for some reason, even though that's kind of the opposite of what's happening.
The alkali metals are metals electrolytically isolated from alkalies (strong bases); "alkali earth metal" is a blunder for alkaline earth, the term traditionally used to describe IUPAC group 2. The oxides of these metals when combined with water for less strong bases . Thus element 19, potassium, is a strongly reactive metal and forms a strong base KOH, formerly called an alkali; element 20, calcium, is less strongly reactive in water and forms a weaker base Ca(OH)2, hence the term alkaline, meaning alkali-like. It was initially assumed that these friable, opaque oxides--called earths because of their resemblance to dirt--were elements in their own right, because early chemists could not reduce a metal from lime CaO the way that they could reduce copper from CuO. With the discovery of electrochemistry by Sir Humphrey Davey, it became clear that such earths as magnesia were really compounds, MgO, and the feminine earth names (agreeing in gender with Latin terra 'earth') were changed to neuter metal names e.g. magnesium.
thanqqqqqqqqqqqqqqqqqqq
I am Professor Salgado, and i would like to congratulate Socratica for uploading all these videos on chemistry. The videos are great but one small concern in 7:32 you said that the elements... Read more
Juan Manuel 😱👎👎👎👎👎👎👎
I don’t get it?
Tag along actinium.
Not bad not bad
Hey! There is 109 elements only in IUPAC.
Ahem. Have you heard the news? :) iupac.org/discovery-and-assignment-of-elements-with-atomic-numbers-113-115-117-and-118/
I am such a nerd. I loved this so much it made me cry 😢
Oddly too how our dna uses light makes its own form of it for comunication in cells here is maybe partly how it does so
I know that I am 10 but it has always been my dream to be a scientist this really helped thank you :D
You're off to a great start! Keep us posted!! 💜🦉
Lit 🔥
yeah boi
Where is noble gas
Getting ready for a TEST? Study what you DON'T know. NEW Practice Test on the Periodic Table & Periodic Trends here: bit.ly/CHEMTESTS Our practice tests have 50 questions (various styles to improve learning) + a COMPLETE answer key with explanations.
its so tough to memberize them you know can you pls make a veiedeo to make it easy to memberize all of the metals and non metals you told pllssssss gys pls like this so she can see thye veiedeo plsssss.
Can somebody find my name elements.
tough
hola
2019 marks the 150th anniversary of the Periodic Table. Join the celebrations and learn more at www.iypt2019.org/
Ayo someone give me 10 facts of the periodic table
Si
Can Someone write me 5 sentences in what I learned