Activation energy

[EternalDestiny95]

Um, I still don't quite the meaning of exothermic and endothermic reactions.

[MrPakistanipathan]

@EternalDestiny95 exothermic are those reaction where heat is RELEASED means at the end of reaction the products have less energy than the reactanta from which they are produced.........as u can see from the diagram of this video...............endothermi­c is opposite to exothermic where reactants intake energy from surroundings and in this case products have more energy than thier reactants

[EnemyofHK]

same here, was ultra confused before watching this

thank you x over 9000!

[musvcHack4cent]

thanks for uploading the video!!!

it really helps

[johnden100]

well explained. thank you

[kittface78]

<3

[chemlink1]

I find your videos to be quite interesting and very appropriate for the notes I present in my chemistry classes. I would like to obtain permission to show these videos to my students. If you are not the originator of these videos, please inform me as to how I may contact the original author. Thanks for your cooperation.

[UniversalArmy43]

cheers dude for putting this video up...

[DarkForgottenUchiha]

dude i was mega confused before this

[perryandmorgan]

@tizzzmeee: yeah, or you could just say it is a reversible physical change of state.

[uhussam]

@perryandmorgan great video

[uhussam]

@perryandmorgan great video i like it

[youlosez]

A piece of ice melting is what type of reaction!? Answer or die!

[MissingNo11]

@youlosez Physical!

Know why? Because you can turn the ice you melted (water) back into ice!

A chemical reaction, however, like burning wood, you can't reverse.

[TiZzZMeEe]

@youlosez There is no chemical reaction, so its not exothermic or endothermic, but only the intermolecular forces (hydrogen Bonds) have been broken! :D

[2BellProductions]

@youlosez Ice melting is not a reaction. It's a phase change. The H2O molecules are simply gaining enough energy to vibrate farther apart from each other.

[zzoldan]

Very well done.

[fanofthesimpsons2]

i dont give a shit!

[TiZzZMeEe]

@fanofthesimpsons2 , the why are you watching it you penut-brain prick!

[bowtacious]

fowler smells

[hupper12345]

THANKS MAN

[kosasihiskandarsjah]

This is only an animation of a reaction in which energy is needed to start the reaction. I don't think this have anything to do with magnetic field.

[goldensleeves]

I think maybe the person below was referring to the relation between electricity and magnetism. Since the video shows lightning/electricity as a reaction starter, the person may have supposed that magnetism could be used similarly.

[youtuubbguy66]

Has these experiments even been done using only a magnetic field?