Activation Energy

039 - Activation Energy
In this video Paul Andersen explains how the activation energy is a measure of the amount of energy required for a chemical reaction to occur. Due to the collision theory the activation energy requires proper energy and orientation of the colliding molecules. The Maxwell-Boltzman distribution can be used to determine the number of particles above and below this point.
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All of the images are licensed under creative commons and public domain licensing:
"Reactions & Rates." PhET. Accessed October 20, 2013. phet.colorado.e....
Sharayanan. English : Depicts the Main Idea Behind the Kinetic Theory of Gases - That Is, Gases Are Made of Molecules Whose Permanent Hits on the Walls of the Container Is Perceived as Pressure, and Whose Excitement Is Related to Temperature., August 8, 2007. Own work. commons.wikimed....

[@1829Emily]

As always, Mr Anderson is saving my life in college. Especially for online classes.

[@allielarson8764]

COLLEGE?????? IM DOING THIS IN FRESH HIGHSCHOOL😭😭😭

[@Michael-go9hm]

@Mahmoud Hasan 6TH GRADE??????? IM DOING THIS STRAIGHT OUT OF MY MOTHERS WOMB CURRENTLY SITTING INSIDE AN INCUBATOR

[@weitao100]

@Mahmoud Hasan 6TH GRADE???? IM DOING THIS FRESH FROM THE 2ND GRADE

[@focus0100]

@@weitao100 2ND GRADE??????? IM DOING THIS FRESH OUT THE WOMB 😭😭😭

[@BobThef]

@@focus0100 Relatable

[@rossappppppoollll9923]

Bro your a legend, 6 years later and this is amazingly useful!!

[@geminifreestyle3697]

i was forced to study biochemistry & hated it beyond comprehension ... mostly on a practical level, not the material itself. med school was never gonna happen & i have no science classes in my life anymore ... yet constantly think about these theories & apply rate determining step/ energy of activation to everything lol

[@praptisalaskar6281]

You deserve much more views, sir! Thank you for another great video.

[@whydoilivehuh6708]

@@arabicromanticsong4980 what the heck dude

[@jacobgalinski2948]

10/10 explanation Cleared a LOT of confusion thank you so much

[@lizsmith1681]

This was massively helpful! My textbook and professor were confusing but this was so clear and straight to the point. Thank you!

[@ybypybky]

English is my second language but I can understand it so clearly!!! Thank you so much

[@Polarcupcheck]

This video is top notch.

[@xoxlinds0]

Thank you Bozeman Science for helping me through my first college bio class!!! I go to lectures, and then if I'm confused on a topic I watch your videos and it helps me! Thank you!

[@drrodrigoromanpena3742]

This is possible the best explanation ever heard in regards activation energy. Well done mate!

[@makiahnoel5671]

Thank you, you describe things in a easy to digest way and you're straight to the point.

[@mirwanmalik5829]

I mean you are the BEST. 👏🥺 i swear you are better than my chemistry teacher by 100 times.. 💯💜

[@jamesy1955]

Excellent. I went from confusion to understanding in about 3 minutes. Many thanks. 👏👏👏

[@xhoney.]

your incredible and thank you so much for your time to help others with their struggles.

[@Saycheeezebuddy3579]

I got crystal clear explanation You are awesome thank you teacher ❤

[@octavian7637]

Clear explanation. Thank you

[@iloveriponst]

Just found out , how much simpler my life would have become, with this guy as my Chemistry teacher .

[@helenwastie5567]

The activation energy for the "endergonic" (or endothermic) reaction is incorrect. Activation energy is the energy difference from the REACTANTS to the "top of the hill", not from te products as this video shows.

[@roshanthomas2761]

I think there was a mistake at 1.00. The activation energy of the forward reaction should extend from the energy level of the reactants to the peak. This is right only if Mr. Anderson was explaining the activation energy of the reverse reaction.

[@lilcookie7118]

@@roshanthomas2761 Yes , he made a mistake .

[@ameliapearson635]

This is so helpful!! I was a bit confused when I didn't understand but now I do!! Thank you so much!!

[@sesha-d5b]

yo this was useful AF! Thanks for it mate!

[@mariakorolev2254]

The activation energy is not drawn correctly on the endothermic reaction at the 1:00 minute time point in the video. It should be all the way from the reactants to the top transition state.

[@rishimalhotra7331]

GIVE THIS COMMENT SOME LIKES. SO THAT PEOPLE DON'T MAKE THAT MISTAKE IN EXAMS

[@hmz01_]

no im pre sure its right.

[@dengke9223]

Yup

[@gabrielatienza7438]

this is reverse reaction, its valid

[@christopherlin4237]

:/

[@nandikdas2144]

This is really great. Well explained in short time. Thank you sir ❤

[@emmiewong1975]

Thank you! This video answered all my questions

[@Fardedandshidded]

Agh shit ik im just dumb but i didnt understand a thing here 1:20 You threw out so many unfamiliar terms i just exploded, trying to decipher what you were saying even though its english and english is my first language ;-; What is orientation? Unimolecular? Biomolecular? Termolecular? Background molecules???? Other molecules? MAXWELL-BOLTZMAN DISTRIBUTION I WANNA CRY LMFAO

[@zaccletaco8223]

All those terms are found in the previous video Elementary Reactions, I'm too lazy to link it lmao

[@ithinkimoutofmayo]

All I understood was orientation which basically means the aligning of the molecules. They way they're put together.

[@AbebeHailu-p1b]

good explanation thanks more..,

[@waqasqureshi6196]

This is really owesome Thank you professor.

[@srinuchandaka3959]

Thank You....❗❗❗ You such a Smart Guy keep Rocking Like this🔥🔥

[@perry2959]

Very helpful thank you sir

[@luisvillamagua2675]

That was helpful! Many thanks

[@noelleobrien7525]

Nicely done- easily one of your best videos.

[@anashussami3689]

Thank you ... the video is so helpful

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Now I have one reason to like Bozeman ;) Thanks! from Missoula

[@ahmedghalbahmed4474]

Thanks dr. brother 🌹

[@khayyam3000]

Short and to the point I Love it. Yet I do not think it is for the novice aspiring Chemist. may want to do some additional Studying , but this video is a great reference and reinforcement, also provides great visual aids with a comprehensive explanation. .. I know run on sentences. I'ma chemist for christ-sake not an english major

[@baycast]

So enjoy your videos. Thank you so much.

[@deepmalik1549]

Best explaination sir thanks a lot for this video.

[@christianparente4276]

Thank you for what you do!!!

[@TheABD101]

Excellent videos.

[@kokfahchong1867]

Every reactant atom must overcome its activated energy before chemical reaction can take place. Why? The outer portion of an atom is the electron-shell that filled with stationary electrons. When two reactant atoms are approaching one another, their like-charged electron-shells will repel one another and they need to have sufficient kinetic energy that we called activated energy to overcome such repulsive force between them before they can fuse together to form a product. Therefore this is why every reactant atom has its own activated energy. Why catalyst can lower the activated energy has not being fully explained? An catalytic atom will make temporary bonding with the reactant atom first that will cause its nucleus structure to flex slightly differently in which this will also re-orientate its edgorbtoslengths or orbitals that making them conducive to make bonding with other reactant atoms now to produce products easier. As soon as reactant atoms reacting under the influence of the catalytic atom where the temporary bonding between the reactant atoms with the catalytic atom will be cut off immediately. Therefore the catalysts can hasten the reaction between reactant atoms where they themselves will not being consumed in the chemical reactions. This is how and why catalysts manage to lower down the activated energy of a particular chemical reaction! If you are interested in real discoveries, I would recommend you to read my book, The Unification Theory - Volume One and you will be amazed with lots of new, interesting discoveries. In God I trust.

[@aryaadami]

It has got to do with the collision theory. According to the collision theory, reactant particles must collide with the sufficient activation energy and at the correct ORIENTATION (how electrons/dipoles line up) to begin the reaction. A catalyst does two primary things: 1. it lowers the activation energy by forming an "intermediate" with the reactants in the transition state of the reaction (when bonds are broken and made) 2. it orients reactant particles correctly so that successful collisions are more likely This is easier to observer in biochemical catalyst (enzyme) models, because the enzyme protein binds with the reactants: ​study.com/cimages/multimages/16/lock_and_key.png

[@drainedgaia]

@@aryaadami welp , that's practically what was said in the video about the collision theory -implicitly- ... he's just explaining why does it need 'activation force' in the first place ... i don't know about the catalyst

[@jasmeien]

I Stan mr. anderson

[@Itachi-gn4wb]

that was really helpful thanks sir

[@youthians]

That was very helpful

[@ayaansakya6846]

It was definitely helpful

[@Deathbywill]

Thank you so much

[@sssniperr7537]

note:actually the enzyme lower the activation energy so reactions can take place at body temperature.

[@johnmichael7721]

Great presentation !!! Awesome videos :)

[@user-ox2bj3jj2m]

Thank you!!!

[@vera691]

THANK YOU SO MUCH!!!

[@ayushverm9195]

thnku professor

[@drainedgaia]

i don't think using the ball analogy was suitable as the constant state at just simply higher height should have been addressed with its equivalent in the reactants or more accurately how what does it represent hence the addressed feature used between the two concepts isn't similar , however the rest of the video is just great ... as usual

[@FutureLobotmist]

I know I’m late but thank yooouuuu

[@florespinoza4137]

Nice job!

[@dennishkzb]

It is really useful!

[@THEMATT222]

4:04 It's strange when it shifts, the curve changes its shape. Why? Why did the curve stretch and not simply slide along the x axis (energy) Is there some distortion or properties caused by increasing the temperature?

[@planckhouse4418]

Awesome 😎.thanks

[@inderpreetsingh4417]

Thank you so much.

[@easychm4u]

Sir what is difference between activation energy and bond energy?

[@jabulilemqadi6287]

Thank you sir. I just had yo subscribe☺

[@nopenopenopenope4309]

I'm drowning in biochem. I know this video is specific to chemistry, but we're doing activation energy with polysaccarides. Is this relevant to that? Amylose and amylopectin in starch 1-4 and 1-6 a-glucosidic bonds via amylase enzyme, but what causes the condensation and hydrolysis reactions, is it activation energy such as the one in your video? Thanks in advance :)

[@dj_stan1010]

Legend videos

[@ellaparsley5090]

love u paul

[@itsGaSZz]

this would have been nice for my test last week -_-

[@aaronlai2754]

great sharing thank you !

[@sophieamat9467]

great video

[@sanusha1510]

Thank so much😘😘😘

[@joosmoo]

I don't understand. Why would an endergonic reaction need activation energy? If the reaction needs energy to occur period, then why would it also need activation energy?

[@MohitKumar-yc7ci]

Yes sir it is very helpful thanku sir

[@slappinmignu4786]

I am not into this stuff, but I must say you did a great job =)

[@leolee4101]

Like you great videos!

[@SmashPortal]

At 3:44 it felt like the placement of Ea was arbitrary, but it wasn't explained that way.

[@Grandbox1992]

Good explanation,,,

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This is kind of better than khan academy

[@jannatzeeshan9769]

Wonderful

[@NanafromGh]

Amazing

[@carlmo457]

Love that

[@kroko8916]

Helpful!!

[@laylahsbeautycorner]

Hi! What did you use to edit this video?

[@mahmoodnabi753]

Ur videos r amazing!!! (Y)

[@nandinisharma7068]

How decreasing the activation energy the rate is increased?

[@smitakumari4302]

For a reaction, specific rate constant at 283 K is 2.5 × 10-6 L mol-1 s -1and at 293 K is 4.25 × 10-5 L mol-1 s -1.Compute the energy of activation of the reaction. Please someone let me know the solution....m stuck :(

[@rifathossain6140]

THANKS

[@junalenemecedilla3120]

Its helpful

[@morsmb1]

ty

[@ratdats8827]

Subscribed! ^_^.. you deserve it :)

[@g.c.biswas9298]

Sir can activation energy be zero?? Everybody is answering differently and its very confusing.

[@openairgospeljoymission]

Can I know the software?

[@jimparsons6803]

Yep. Cool. So chemical reactions can be written as a algebraic equation, or perhaps something similar. Most of such equations that I've seen over the years in books have the activation energy written in the form of a little triangle below the equal sign. So you might think to rearrange the equation so that the triangle is written on the right side of the equation. and if there are several reactants you might further think to just heat not all of the reactants on the right side of the equation to well above the activation energy. Leading to a higher yield? So heating up some of the reactants and then tossing into a beaker that contains the other right side reactants and hopefully presto, the reaction and a higher more complete left side of the equation and the cited yield. So Chemistry is not only a science and it can also be a business. So a higher yield for the same amount of effort? Ka-ching!!

[@AdiChemAdi]

Also, watch another video on Activation energy for basic understanding at kzbin.info/www/bejne/pnbMgmCambeLppI

[@rahulkumar-ln5lh]

Hello Sir, can you please suggest how to calculate the activation energy of copper

[@kklol07]

thankyouuuuuu

[@kashifhussains2951]

But sir why do activation energy is needed for reaction??

[@Juangorena5]

mhm!!!!!!!!! i agree if you hit it right it comes back....................

[@kale4761]

Every time I hear him say occur I hear cardi b say okurrrrrr

[@tcghosted]

Keila Flores bruh moment

[@lr4189]

so by giving energy he means "giving"(= increasing) heat....right?

[@jamesy1955]

L R yes, heat is energy. 😊

[@sidrakhalid3668]

do we need activation energy in every. Reaction??

[@rubaril]

Belê beguman

[@Napat289]

you are amazing

[@steveortega6464]

cool

[@aamm1243]

what is difference between activation energy and threshold energy? On Maxwell-Boltzmann curve you plotted Ea, isn't that threshold energy, instead of activation energy?

[@aamm1243]

Hmmm

[@ashwaniupadhyay2811]

M Pere no they are not

[@mrx3430]

what scienses do you like ?

[@tiptop1119]

plz tell me what is different between threshold en. and Ea en.

[@payyacjamieleigh8201]

i really cant understand your english sir huhu i have to playback again and again because i cant understand the words clearly.