Chemistry Music Video 21: Exo, Endo, What's The Diff

This song describes the difference between exothermic and endothermic potential energy diagrams. All music and lyrics copyright 2007 by Mark Rosengarten. All rights reserved.

Lyrics:

Map it, graph it show me how
Reaction PE change
Exo, endo, whats the diff?
Whys it look so strange?

Reaction coordinate on the X
PE on the Y
Time to draw a PE graph
Or at least to try!

Heat of reactants where we start
The left side, on the nose
Activation energy
Is what we need to go!

Activate your reactants, yeah
Take it to the top
The activated complex
Is too hot to stop!

The activated complex
Breaks up at the end
It will form your products
Look how that line bends!

Map it, graph it show me how
Reaction PE change
Exo, endo, whats the diff?
Whys it look so strange?

(Exothermicnegative delta H)

If you start reactants high
End with products low
Its an exothermic change
Say it once more, slow!

(Exothermicnegative delta Hnegative delta H)

EX-OH-THERM-IC CHANGE!
ITS NOT STRANGE!
(I think the guy who wrote this song is deranged!)

If you start reactants low
Products higher still
Its an endothermic change
That means it is a-chill!

(Endothermicpositive delta H)

EN-DO-THERM-IC CHANGE!
ITS NOT STRANGE!
(North Dakota has a town called Home On The Range!)

Map it, graph it show me how
These diagrams bring me joy
I dont ever want to end this song

Category:

Science & Technology

Tags:

• chemistry
• rosengarten
• kinetics
• thermodynamics
• exothermic
• endothermic
• potential
• energy
• PE
• diagrams

[LoveTruelyGSR]

Ok... interesting...

[MarkRosengarten]

@LoveTruelyGSR Thank you! :)

[ThexAcex21]

surprisingly this answered all my questions, and it was funny XD

[pdmantellem]

What is the diff?!?!?!

[marychome]

H is heat. So delta H is change in heat, also called heat of reaction. Heat absorbed = endothermic. Heat released = exothermic. Entropy is a different concept -- randomness. I use pictures of teachers desks for entropy. The messier the desk the more entropy. In a chemical reaction, more entropy means more disorder, ie. Gases have more entropy than liquids or solids.

[bethany014]

what is H??

[MrDevil2000]

I don't get it!! :-(

If endothermic absorbs energy...isn't suppose to b entropy? 

I'm really bad at chemistry...so can someone please help me.

[tammmmus]

LOL. thank you!

[hupper12345]

thankyou i wish i had you as my chemistry teacher :(

[suckerpawnch]

so totally freaking weird it was awesome... It made me laugh when my chemistry teacher played it, so i had to go find it myself :D

[Sheengelo001]

HEY CAN U TEACH ME HOW TO DOWNLOAD THIS VIDEO??

[lukethezhou]

Very disturbing and deranged. I love it.

[EngrossingEnigma]

Mark Rosengarten noun: a person who is adept at teaching. Used in a sentence; My teacher sure is a Rosengarten