GCSE Physics - Specific Latent Heat #29

This video covers:
- The idea that the temperature of a substance is just the average of the internal energy of all the particles it's made of
- The concept of specific latent heat
- The specific latent heat of vaporisation
- The specific latent heat of fusion
- An example case of water
- How to use these values to calculate energy using E = mL

General info:
- Suitable for all GCSE courses but not IGCSE
- Suitable for foundation and higher tier
- Suitable for double and triple science

Exam board specific info:
AQA - Everything is relevant to your course!
IGCSE Edexcel - Not in your course
Edexcel - Everything is relevant to your course!
OCR 21st Century - Everything is relevant to your course!
OCR Gateway - Everything is relevant to your course!

[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

[gloss]

cognito you're literally the reason im passing my olevels now tysm lifesaver<333

[sgnjamcitydevteam]

*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 😂*

[ananyap]

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

[Alpha-]

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

[ananyap]

Yall legit saved my science ngl.. taught me more than my teachers good job

[MrStealYoBoard]

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

[catuwu]

thanks you made my studying way easier

[INFINITRxpct]

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!

[ashferns]

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

[teacherconor]

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.

[justindizzo]

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

[teacherconor]

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

[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

[alistair]

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!

[teacherconor]

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)

[bobthemonkey]

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

[TheCosmicEntityEditz]

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

[aymanhalim]

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!😃🔍

[ErrybodyGetTypsy]

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