If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom
incase anyone needs to take notes, i wrote out the important parts from JJ thomson J.J Thomson Plum pudding model 1897 Atom = ball of positive charge with discreet electrons stuck in it Ernest rutherford 1909 Took positively charged alpha particles and fired them at thin sheet of gold If the positive charge in the gold atoms was generally spread out, as JJ thomson had proposed, with the plum pudding model. then the alpha particles should pass right through the gold because the weak spread out positive charge wouldnt be strong enough to effect them. weirdly though what actually happened was some of the alpha particles deflected to the side, and a small number deflected back the way they had come. proving jjs theory wrong. Nuclear model- instead of a general field of positive charge, there was some sort of compact nucleus which contained all of the positive charge of the atom. and he thought that the negative charge must exist in some sort of could around the nucleus. at this point, rutherford was already pretty close to how we currently understand the atom, but his model, had one flaw. namely, there didnt seem anything stopping this cloud of negative electrons from rushing in towards the positive nucleus. meaning that the atom, should just automatically crash. which we know it doesnt. just 4 years later though, in 1913 a man called niels bohr suggested a solution. he suggested the electron orbited the nucleus, in a similar way to how the planet orbits the sun. and also that they were held in shells. this idea was really important. because the orbiting of the electrons, is what prevents the atom from collapsing. in the years since then. many experiments have supported this model. and its pretty much the same one we follow today, with just a few small changes. further experiments by rutherford, found that the positive charge in the nucleus, is actually made up by small discreet particles, which are now known as protons. and a short while later, a guy called james chadwick provided evidence for a neutral particle in the nucleus. which are now known as neutrons.
Im a freshman and my science teacher gave me a project to write about these 6 scientists and how they developed the atomic model. This video literally saved me from reading tons and tons of articles to find information. Thank you so much man.
1897: JJ. Thomson: AHH yes a new scientific breakthrough my whole life I've worked for this what should I name it? WAIT I'VE GOT IT.... Plum pudding Model
fun fact: youre not here because you want to. youre here because this channels playlists are the only thing saving you from failing all your gcses and end of year tests because your teacher didnt want to or if youre like me they ran away crying from your class and now youre cramming information into your brain on a test that you dont even know what is on other than chemistry yet you know nothing yoire supposed to be revising as you werent taught anything. hi. my names ryan, and my life is kinda crazy!
you are so underrated. this is such an amazing video and condenses things but still helps point out key stuff. thank you! please continue making videos
Yeah ㅠㅠ I missed a science Assessment because of having covid, and now here I am with a week to complete a giant Assessment I didn't know I had. And here I am writing this comment instead if actually doing something I need to. 🤦♀️
I have already read quite a few articles related to atomic theory but your videos sir always present something new and unlooked fact !! Thanks for the video 😊
hi, your vids are super helpful! i do home learning, do the videos on your channel cover everything you need to know for GCSE or are there topics missing?
I'm not sure if I got this wrong but I was taught that the expected results for the Gold leaf experiment was that the alpha particles would be repelled BECAUSE the atoms were said to be solid spheres of positive charge with negatively charged particles embedded within it. So when the alpha particles would come in contact they would be repelled. Instead, most passed through suggesting atoms are mostly empty space with very few being repelled or deflected suggesting there was a positive charge but it was very small and in the centre of the atom. If you could, could you clarify if this is the wrong information? because in the video it says something else?
I know this comment is pretty old, but I was taught this too. Do you now know what's right and what isn't? I'm very confused now, and would like an answer.
These are great videos. it literally provides everything from my GCSE textbook in a shortened more understandable version. The videos make it easy to study for tests. Keep on making great videos like these. 👍👍👍
Erm, except Niels Bohr's orbiting theory was mostly rejected and Erwin Schrodingers theory that the electron movements are more sporadic/random took over. Yes or no? I'm new to this.
Wrong the concept of small, indivisible, self-revolving particles that make up matter was first proposed not by Democritus but by Kanad in his book 'Vaisheshika Sutra' around 600 BC
![Chino Pacas - Smith (ft. Junior H & Fuerza Regida) [Video Visualizador Oficial]](http://i.ytimg.com/vi/BVK6k56X30Y/mqdefault.jpg)
If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
- Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on.
- Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like.
- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A comprehensive bank of past exam papers, organised both by year, and also by topic.
Amadeus & Tom
Fabulous
sui
incase anyone needs to take notes, i wrote out the important parts from JJ thomson
J.J Thomson
Plum pudding model
1897
Atom = ball of positive charge with discreet electrons stuck in it
Ernest rutherford
1909
Took positively charged alpha particles and fired them at thin sheet of gold
If the positive charge in the gold atoms was generally spread out, as JJ thomson had
proposed, with the plum pudding model. then the alpha particles should pass right
through the gold because the weak spread out positive charge wouldnt be strong enough
to effect them. weirdly though what actually happened was some of the alpha particles
deflected to the side, and a small number deflected back the way they had come.
proving jjs theory wrong.
Nuclear model-
instead of a general field of positive charge, there was some sort of compact nucleus
which contained all of the positive charge of the atom. and he thought that the
negative charge must exist in some sort of could around the nucleus. at this point,
rutherford was already pretty close to how we currently understand the atom, but his model,
had one flaw. namely, there didnt seem anything stopping this cloud of negative electrons from
rushing in towards the positive nucleus. meaning that the atom, should just automatically crash.
which we know it doesnt. just 4 years later though, in 1913 a man called niels bohr suggested
a solution. he suggested the electron orbited the nucleus, in a similar way to how the planet
orbits the sun. and also that they were held in shells. this idea was really important. because
the orbiting of the electrons, is what prevents the atom from collapsing. in the years since
then. many experiments have supported this model. and its pretty much the same one we follow
today, with just a few small changes. further experiments by rutherford, found that the positive
charge in the nucleus, is actually made up by small discreet particles, which are now known as protons.
and a short while later, a guy called james chadwick provided evidence for a neutral particle in the nucleus.
which are now known as neutrons.
Thanks i love you
thank youu
@@quaintrelle881 its discrete rather than discreet but other than that
I genuinely thank u
@@citrous tyy
Im a freshman and my science teacher gave me a project to write about these 6 scientists and how they developed the atomic model. This video literally saved me from reading tons and tons of articles to find information. Thank you so much man.
1897:
JJ. Thomson: AHH yes a new scientific breakthrough my whole life I've worked for this what should I name it?
WAIT I'VE GOT IT....
Plum pudding Model
he later called it water melon model
then he called it apple pie model LOL
Dang, that man must've been very hungry during it's discovery lol
😂 yesss :D
@@Anush_SivakumarREALLY? HAH LOL
Ur lowering the grade boundaries bro❤
Here to revise for my science test, your videos are really helpful for revision on my science topics, thank you!🫶🏼
Me too 😢😊
How did you do!
Thanks
Love the pfp
fun fact: youre not here because you want to. youre here because this channels playlists are the only thing saving you from failing all your gcses and end of year tests because your teacher didnt want to or if youre like me they ran away crying from your class and now youre cramming information into your brain on a test that you dont even know what is on other than chemistry yet you know nothing yoire supposed to be revising as you werent taught anything.
hi. my names ryan, and my life is kinda crazy!
im here cuz i want to :sunglasses:
ha. ha. haha.
@@peepants64bigger trigger figure sticker snicker snugger winger
Amazing video. Very informative and had a clear concept.
you are so underrated. this is such an amazing video and condenses things but still helps point out key stuff. thank you! please continue making videos
If you’re also here bc you have hmwk you don’t understand 😌
SAME AHHAHFJ
Samee
This brudda knows
Yeah ㅠㅠ I missed a science Assessment because of having covid, and now here I am with a week to complete a giant Assessment I didn't know I had. And here I am writing this comment instead if actually doing something I need to. 🤦♀️
and bc I have a test in under an hour and idk what tf an atom is
Thank you so much, sir. Your explanation helped me revise one topic from my Chemsirty test.
This video is SOO helpful!! I’ve watched it twice cause I took triple science, once for homework (this helped me make a 3 page essay) and revision
at 1:53 the cc say out four but they mean alpha, just in case you were confused
I have already read quite a few articles related to atomic theory but your videos sir always present something new and unlooked fact !! Thanks for the video 😊
Tried to advance study about Atomic Models and this helped alot!!
great! REALLLY useful for year 10 physics!😁
i’m year eleven chemistry lol nigga
@@barcaedition9832 i think it all depends on the school. I do this in year 10, some schools do in year 11, and others in year 9
Gaia Cooper yeah but this is a chemistry subject
@@barcaedition9832 😆year 9
@@Fate134 same here
This is way more entertaining than looking through notes so I am gonna watch a bunch of these until I eventually just remember the models
Is anyone here from 2024
yes
Me
Yh
@@anqni yes
No
to remember the names of the scientists:
Dont
Teach
Rude
Boys
Chemistry
dalton
thompson
rutherford
bohr
chadwick
nice
Thanks I’m gonna use that
thanks lol! I’ll memorise that xD
You're a hero for making this.
bro be casually saving my exams in a month 😭
Chemistry paper1 in a few hrs ☠️💔
Excellent resumé. Thank you!
Thank you so much for this video!! You have saved me so much time and stress!!
this channel is extremely good
Subscribing to this channel was not a mistake for me and I will forever be grateful. Thank you cognito 🧠🎤📖📚 much love from Sierra Leone 🇸🇱🇸🇱🇸🇱
Thankyou this amazing video helped me produce some brilliant work for my lovely teacher
I immediately understand these atoms,and i like this lessons,because it inspires me a greater education to all,and ty for this
Thankyou Elsa!! glad the video helped 🙌
@@Cognitoedu It's fine
hi, your vids are super helpful! i do home learning, do the videos on your channel cover everything you need to know for GCSE or are there topics missing?
nope there all here
@@YUN-JINlesserafim thank uu
Thx Man U helped a lot with some stuff I gotta do
How does Man U help with your chemistry course?
A very helpful and concise explanation: thank you!
I'm not sure if I got this wrong but I was taught that the expected results for the Gold leaf experiment was that the alpha particles would be repelled BECAUSE the atoms were said to be solid spheres of positive charge with negatively charged particles embedded within it. So when the alpha particles would come in contact they would be repelled. Instead, most passed through suggesting atoms are mostly empty space with very few being repelled or deflected suggesting there was a positive charge but it was very small and in the centre of the atom.
If you could, could you clarify if this is the wrong information? because in the video it says something else?
I know this comment is pretty old, but I was taught this too. Do you now know what's right and what isn't? I'm very confused now, and would like an answer.
Ive read some articles and it seems this video stands true to its word. I dont know where you got that information as i was taught exactly this
Thanks for the video!
informative and simple...nice video,nice work
These are great videos. it literally provides everything from my GCSE textbook in a shortened more understandable version. The videos make it easy to study for tests. Keep on making great videos like these. 👍👍👍
Thank you for this!! Learned this in hs so now that this is in uni I thought i was gunna faill
Got the gcse today gotta watch this rq
Quick and precise amazing video
Thank you for all of your amazing videos :) Cheerio!
Thanks Shivansh, glad you like them!
How can we make these kind of projects ....pls reply ..
I have the hsc in an hour and I’m watching this now! Am i tucked or what!
TYSM I HAVE AN ESSAY ON ATOMIC STRUCTURE DUE AND I WAS SO CONFUSED
Here I am, the night before my science test, trying to learn a whole term of work XD
Same😭
Im with you
Thank you 🎉
BANGER VIDEO!
What about the Quantum Atom?
Ernest Rutherford brought about the term 'protons', right?
You make chemistry so shrimple
we need to do a homework about this and im grade 7 and it's the 2nd week
i just lost the last of my braincells
Same ;-;
Thank you so much you helped me with my homework *subscribes* :)
Glad we could help out! 👍
Thanks
Hi 👋🏽 this is very helpful
sorry i accidentally clicked dislike but i clicked like again, it's a very informative and helpful video 😊
Stop reading comment and study for your exam👍
thank you x
not the most replayed being the plum pudding
how about sommerfeld-bohr? or schrodinger.
dont give us more to learn
very useful 👌🏻💪🏻
chemistry work
wow that is awesome
In my science class yes Mr Strickland its me
Hi Harristown
I like your name
I love you thanks
Erm, except Niels Bohr's orbiting theory was mostly rejected and Erwin Schrodingers theory that the electron movements are more sporadic/random took over. Yes or no? I'm new to this.
anyone else here because they have mocks in 20 mins?
❤❤❤🔥🔥🔥
Common Cognito W
who ells is here because of there teachers?
Same :(
What is yo gramma bro
Idk to be honest with you mate 👍
Wrong the concept of small, indivisible, self-revolving particles that make up matter was first proposed not by Democritus but by Kanad in his book 'Vaisheshika Sutra' around 600 BC
yall make me wanna eat plum pudding now TT
scaramouche
Have my gcse chemistry triple higher exam in 1 hr 20 mins 😭😭😭
i have a test tomorrow I'll be back to say how I did
noice
hi it's my homework ffrom this thing😢
Who else is here for homework?
Ty ty ez 8s
Yuhhhhhh
Hahahahah I'm going to be in my class
any one here from the city school
Poo
fart
@@laurianaa get better
@@theduo-cg8sq aw man 🫤🫤
himc
You kinda sound like Tom Hiddleston hehehe
helo humans
Test tmrr
if your here because of a test👇
G
Home learning huh?
No
.
e
people before 500bc
fuck
pas ouf la video
thank u sm this helped me for my upcoming science periodic test later🥲🥲🥲 WISH ME LUCK