GCSE Physics - Specific Latent Heat #29 

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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.

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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

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

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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!

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ilysm .

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

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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 😂

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

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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)

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)

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1:19 Do you have birds?

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