GCSE Physics - Specific Latent Heat #29

[@Cognitoedu]

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

[@INFINIT3Rxpct]

Can you please make the practice questions and past papers on your website a lot harder, or provide harder alternatives because I find your videos packed with dense information (explained in easy and interesting ways in a short amount of time) that I find really helpful in difficult exams but the practice questions and past papers are relatively easy and I don't find them challenging. Thanks, and I love your content!

[@shouldbeinvisible1941]

What abou specific latent heat of sublimation?

[@7akziz584]

thanks man

[@ananyap7072]

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[@Cognitoedu]

yay, thanks gloss 🤩

[@curumii]

how was it? i'm currently doing o levels but not improving at all. just had my chem class test and... don't ask.

[@sriyankanimali2343]

@@curumii try making short notes or doing past papers. it helped me alot

[@curumii]

@@sriyankanimali2343 oh yeah i do that but idk i just keep forgetting it!! but thx for the advice

[@sriyankanimali2343]

@@curumii no problem ☺

[@Alpha-8000]

I say remember the equation by 'email' because E=MxL

[@MrStealYoBoard]

u are carrying my science and maths gcse course, this is better than a tutor ngl

[@sgnjamcitydevteam6913]

*My teachers sometimes put this on for us and it’s actually really helpful to understand the topic :,) helping for revision for my Physics exam today 😂*

[@lochanarajapaksha4054]

Thank you so much!! I have my exams tomorrow and after reading the books and listening to the teachers I still couldn't understand this properly but your video made everything crystal clear!!! This is simply an AMAZING explanation. I will make sure all my friends subscribe this channel 🙏

[@ananyap7072]

This taught me more than 2 weeks of listening to my teacher did THANKS COGNITO !!!!

[@apexiumstudios]

2 weeks wth

[@teacherconor9037]

0:23 "We also saw that temperature is just a measure of the average internal energy of all the particles..." misconception: it should be "average kinetic energy" Internal energy is a property of bulk materials, not particles, and is defined as the sum of the total potential energy of all the particles plus the total kinetic energy of all the particles.

[@MrCrytpic]

quick question, if the average kinetic energy of the particles increases does the internal energy still increase whilst the potential energy remains constant?

[@sjd_1111]

@@MrCrytpicbro replied to a 3 year old comment 💀 on Zeus you ain’t getting a reply

[@catuwu1527]

thanks you made my studying way easier

[@adityasaraf4878]

THIS THING YOUR MAEKS WILL DECIDE

[@adityasaraf4878]

MARKS WILL DECIDE

[@adityasaraf4878]

THIS THING YOUR MARKS WILL DECIDE

[@parnaviyadgire5149]

@@adityasaraf4878 oye mungerilal chup

[@teacherconor9037]

1:20 "And remember that the temperature is just a measure of the average internal energy of the particles...". Sorry, wrong again. Temperature is a measure of the average KINETIC energy of the particles **not internal energy, kinetic energy

[@parnaviyadgire5149]

Not to be rude or anything,but you're creating an unnecessary issue here. Internal energy is the total energy stored by the particles of a substance. There are two types of internal energy, potential and kinetic energy stores. I agree with you, temperature is the measure of the average kinetic energy of the particles,but kinetic energy is the same as internal energy. Please correct me if I am wrong.

[@teacherconor9037]

@@parnaviyadgire5149 check the definition of internal energy in for example the AQA GCSE spec

[@firefox2057]

@@parnaviyadgire5149 nah your wrong i legit put that 'temperature is a measure of the average internal energy of all the particles in a substance' in one exam and it sold me marks temperature is a measure of the average KINETIC energy of the particles and kinetic energy is NOT the same as internal energy, kinetic energy is kinetic energy, but internal energy is the sum of the kinetic and potential energy of all the particles in a substance

[@UzumakiD.IchigoSuperSaiyan]

thank you so much, i went to the toilet while my teacher was covering this and missed out on this. my science test wheter im in normal science or triple science is coming up and this video really helped

[@teacherconor9037]

1:17 "Rather than increasing the particles' internal energy" - sorry, this is wrong. The internal energy IS increasing during a change of state because although the total potential energy of the particles is increasing, even though their total kinetic energy is not increasing. Internal energy = the sum of (total PE of the particles) and (total KE of the particles)

[@teacherconor9037]

@@TriNguyen-he7xk Internal energy is a bulk property, not a property of particles

[@katiefinnerty453]

Physics Mock today, you're a lifesaver ❤

[@AbdulHadi-wc4fp]

Sir you are the best. ❤❤❤😊😊

[@Cognitoedu]

Thanks for all your support Abdul 🙌

[@home-edwindsor]

no you are

[@tarekouda8979]

dude, you are awesome, please continue

[@amazingshorts6061]

this is the best explanation Ive ever heard

[@alistair3717]

Hi, Thanks so much for your resources - I was using this in class today and noticed you define temperature as a measure of the average internal energy of the particles. Unless I am confused, I believe the temperature is a measure of the average kinetic energy of the particles in a system - not including the potential energy. Without this distinction, it's difficult to explain how energy is conserved during the process (i.e. the energy is transferred to potential energy in the particles, instead of kinetic energy?). Interested to hear your thoughts and justification either way! :) Thanks again!

[@pieterhuman8049]

I am a teacher and must say upfront that I absolutely love cognito's content. I had the same issue with this particular video though. In my understanding energy transferred to a substance that results in a rise in temperature, is due to the increase in the average kinetic energy of the particles in that substance. During phase changes, the energy transferred to the substance leads to an increase in potential energy as this energy is "used" to weaken or break the bonds between particles, and does not increase the average kinetic energy ie. temperature, of the substance.

[@hgamerz1238]

U explain better than my physic teacher ngl thanks

[@INFINIT3Rxpct]

Can you please make the practice questions and past papers on your website a lot harder, or provide harder alternatives because I find your videos packed with dense information that I find really helpful in difficult exams but the practice questions and past papers are relatively easy and I don't find them challenging. Thanks, and I love your content!

[@subscribe_PLS653]

Samee

[@subscribe_PLS653]

it would actually be helpful ifbhe made videos on them right

[@kin1280]

the graph is so beautiful sir, thank you for your video

[@justindizzo17]

Thank you, I've had struggles with this topic for a long time but now its completely solved

[@ErrybodyGetTypsy]

Thank you for making this!! My textbook totally glossed over all this and simply mentioned “latent heat” I was curious to know more

[@ashferns8773]

Please keep making videos i find them really helpful for revising over topics i don't understand very well

[@kevinshijuthomas9781]

lemme guess stupid teachers who cant explain topics which in the right words are simple?

[@universeusa]

Thank you, thank you, thank you.

[@bigbruh7135]

This video is so simple and very helpful, thanks!

[@Cognitoedu]

Great to hear - thank you!

[@bobthemonkey9918]

Bro your videos are really good. I have watched many topics from your channel and i understood them like never before! Tysm! 😊😊

[@T1murr]

I appreciate your handwriting.

[@sammatthew7]

Hi a doubt , will the internal energy still increasing during the Vapourisation/ Fusion states?

[@_aksed]

no since all the energy is being used to change the state

[@moonmeesan9704]

Awesome. Thank you so much. 👏👏👍👍

[@azure_jem]

1:17 I thought the internal energy still increases during a change in state because the potential energy is increasing (even if the kinetic energy isn't)

[@ice7677]

No, the energy is used to break the bonds

[@xam4256]

internal energy of the system increases

[@bonzopippinpaddleopsicopolis]

temperature is the increase in average kinetic energy, not internal energy

[@zaheerhussain4121]

Really nice 👍

[@Thinchip15]

Thanks you so much! Life saver! 😊

[@samitasajeevan2659]

Amazing Video! You guys deserve more views! I hope it happens asap❤️ All the Best🌼

[@Cognitoedu]

Thanks for your support Samita, we really appreciate it 😊

[@aymanhalim990]

Thanks a ton for mentioning the education board syllabus! I was trying hard to think about this topic but later I realized- There's no topic of this in IGCSE!😃🔍

[@octacore5922]

Hello, so if we want to know the energy required to change ice to gaz we have to use as L : 2 220 000 + 334 000 ? Thanks for the videos by the way, they are very well explained and well made ! You deserve much more views

[@teacherconor9037]

yes, if you are doing the change on 1Kg of ice, because those figures you quoted are the *specific values, i.e. they refer to one kilogram of the substance

[@kavee3495]

I guess no actually. Since SLH means the energy needed to change the state when the substance does NOT change the temp. So suppose the ice is -10 degrees celsius, then first we hv to add the energy to make it 0 degrees and THEN we need to SLH of fusion then add the temp needed to make it 100 degrees and lastly add the SLH of vaporization. And yes we hv to multiply the SLH by the mass bcz these are the values for 1kg I suck at explaining but hope this helps :)

[@TheVoidmaster_infinity]

A very nice video! Very educative & interesting. Which platform did you use to make these videos, by the way?

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[@yusefmaroffi8802]

many thanks to you sir

[@Cognitoedu]

You’re very welcome! Thanks for the support!

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You sound like one of my friends at school

[@vapaus831]

1:19 Do you have birds?

[@professorpepe2732]

Thank you mr amr!

[@sorena9124]

That's my revision done

[@idolrose6557]

thank u soooo muchhhhh im acc crying i was so stressed because i didn't understand it at all but finally i do thank u soooo muchhhhh :)))))))))))))))))))))))))))))))))))))))))))))))))))

[@Cognitoedu]

Aw thankyou Idol, glad we could help, hope you're feeling better about it all now 🙏

[@ananyap7072]

Please continue to make videos :)

[@bsrkguts]

I get so many hw from you by my teacher

[@yixyaxo]

ilysm .

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which app did you use to edit this video?❤❤💛🧡💚💙💜🖤

[@lukehuddbaby7381]

AMAZING! everything I needed, thank you p.s I’m boiling hot I think my heating is too high, well I better get ready to use the relevant VAPORISATION data from the table 😂

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how did you create such video? what kind of software did you use?

[@mraro5865]

thank you very much sir

[@woahobelix]

bro what? 3 pages of notes in 6 minutes holy fuck

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Good❤

[@ManivannanRakshithNevinStgss]

amazing

[@muhammadmuaz1741]

THANKS

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thank you !!!!!

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Shoutout to cognito

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Hey Great Video and very helpful, can i know thw name of the app that gives you the whiteboard and the font and if it is not an app please explain😍

[@jamalpov]

trés bien

[@yan_eng8661]

only 933 likes??? seriously???? smh...

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this is the most boring thing I've had to watch

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Init

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why u think so

[@teacherconor9037]

really? I think he did a really good job!

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[@Noone_161]

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