Endothermic and Exothermic Reactions

[@bobstrongbad]

Your videos, along with many others on here, are exceptional. The explanations are remarkably clear, concise and provide a good range of examples. What people on KZbin are teaching me in 10 minutes my teachers can't do in 6 hours of class time. Thank you for making these videos.

[@1ZazaTree]

i learned more in 5 minutes than this whole half of my school year

[@shafeymushtaqch1493]

Try Studying

[@fink7692]

@@shafeymushtaqch1493 No

[@Alastor__HH]

@@shafeymushtaqch1493 NERD ALERT

[@Simple-2-]

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[@leamestermann4656]

this genuenly saved my life, i have my chemistry exam tomorrow and i was so close to giving up. THANK YOU!!!

[@lunarathod8887]

It's sad because this guy teaches better than my Bio Honors teacher

[@chinapascual6697]

same

[@danielalexis3437]

this video was very help , now i understand 100% about Endothermic and Exothermic Reactions , i will make sure to recommend this video to my friends and family .

[@jessicab7005]

Thank you for making me understand in 5 minutes and not a 75 minutes long school lesson XD

[@abigailben7671]

+jessica Bignall I know what you mean

[@SLASHERamc]

Thank you!!! My teachers suck!!!

[@melissapremo179]

Omg same so does mine.

[@SLASHERamc]

meilssa premo At that time- it was her first time teaching chemistry, in english!

[@neelia3435]

Thank you for your work! Whenever I don't understand my Biology or Chemistry class I can always count on your videos! Your the reason why I passed my science classes at all!

[@duncanmckillop2290]

If you are going to use the cold pack as an example, you should also explain which physical changes are exothermic and endothermic and explain to them the difference between water freezing (exothermic) and a cold pack feeling cold (endothermic).

[@IcturewindowBlogspot]

I'm a french speaking one but it has been easier to understand the video in English. Good job!

[@ripmamba2731]

I learned more in 4 minutes than in 2 50 minute classes, wow you're amazing.

[@chloemathias9864]

Thank you, this was very helpful; I learnt more in this 4 minute video than I did in my hour long chemistry lesson :)

[@boofang10]

TQ Mr Anderson !! Very straightforward & clear-cut explanation to differentiate Endothermic & Exothermic reactions , together with examples & energy profile diagram !! 👍🏻👍🏻

[@maddie6363]

yesss! omgg I was literally looking for this just yesterday! thank youu so much. my teacher clearly doesn't know how to teach...

[@heatherleisure]

You saved my life. I was just sitting here thinking about hanging myself because my textbook's explanatory power is bankrupt and so I couldn't fit the facts together into a seamless process.

[@Pk_pk123]

@@ronanpflanagan shut up

[@fishythefish7984]

@@Pk_pk123 ????

[@Pk_pk123]

@@fishythefish7984 i said shut up can you not read

[@fishythefish7984]

@@Pk_pk123 I said "???" as in why or what are you referring to. why are you such a rude piece of shit. fuck off dumbass. nobody needs your negativity. don't reply, bye

[@fatmaelhadari2236]

may be so late but: i don't understand...the exothermic reaction liberate the heat energy which means that the system will decrease in the temp and the surrounding will increase but when we measure by the thermometer the temp. of the chemical reaction for example as if it is exothermic reaction (Fe2O3 + 2Al --------> 2Fe + Al2o3)the thermometer tells us that the temp. increase although we have just said that the system will decrease not increase ,the same thing happen in the endothermic reaction....so how?! #bozeman science @bozeman science

[@nerdcraig4696]

Best intro on youtube

[@regretnightling]

I just learnt this topic today and had no idea what my teacher was trying to say. Your explanation was so much better. Thanks :D

[@andrew6377]

thank you so much you made this very simple and easy to understand

[@IamGonzo]

My bio teacher with a doctorate isn’t even teaching us we just have to search videos and hope for the best

[@JudithAbergosDesertPinesHS]

this video was clear and easy to understand

[@Keith_Mikell]

Wow. This channel is great

[@claudekennedy7855]

Your videos are SO helpful. THANK YOU SO MUCH. It's greatly appreciated by students everywhere.

[@chomeo6797]

Thank you for making this! I learned a lot in the video.

[@abigailben7671]

I want to say thank you! I don't know why but this helped me understand endothermic and exothermic WAYYYY more :)

[@Sol-01]

I don't understand 4:03, if it is consuming heat from the surroundings wouldn't that mean it would be heating up?

[@jackvatcharat7631]

Wow! Thank you for giving me a chance to watch. :) Your subtitles (captions) help me a lots!

[@PM-ge5bj]

Agh! Thankyou. I have a test on this tomorrow!

[@fishbytecast5693]

Really helpful thank you for that informative videp

[@flynnkay]

for the last example, WHY does it consuming HEAT make it *colder* that makes no sense it consumed heat so it should be warmer

[@easytheories]

GreenShot yeah why's that????

[@TMPChem]

Great question. Typically, one implicit assumption in these calculations is that the process occurs in a closed system at constant temperature and pressure (as is approximately the case if the reaction is exposed to the atmosphere). If a reaction occurs which has a negative enthalpy change, then the temperature will tend to decrease. As the temperature decreases below that of the external environment, heat will flow *from* the surroundings *into* the system, until the system once again reaches the temperature of the environment. The amount of heat necessary for this to occur is equal to the magnitude of the enthalpy of reaction. Since heat flowed *into* the system to re-balance the temperature, we would describe this as an endothermic process (the prefix endo- meaing "within").

[@pwazi4729]

The channel explaining it made it slightly more complex than it needs to be. Enthalpy is a measure of heat. It is impossible to measure the direct enthalpy of a system (atoms making up a compound) and thus you measure the temperature of the enthalpy of the surroundings. As heat is being absorbed from the surroundings, the temperature is colder.

[@TMPChem]

Agreed for the most part. Heat is being absorbed from the surroundings into the system. This lowers the temperature of the surroundings. The reaction vessel (which is cold) is part of the surroundings. The enthalpy *change* during a process (the reaction) is equal to the heat absorbed *into* the system (if it the process takes place at constant pressure). It certainly is very difficult to measure the (absolute) enthalpy of a system, but it's much easier to measure / calculate the heat of the reaction from the temperature changes of the surroundings.

[@AltairZielite]

Now I'm curious. What if you have what should be an endothermic reaction but separate the process from any surroundings?

[@janieli]

At the end of the video, if you're decreasing in energy, doesn't that mean you lose energy? Like if the temperature decreases, there is less kinetic energy... so why is it endothermic?

i swear i have the same question and nobody answer it

[@janieli]

@ hey! i think i asked my teacher after and he said that i’m endo/exo questions are relative so it’s technically exo for the water as it loses energy but as for the reaction it’s endo bc it gains the energy that the water loses

[@ajlane8591]

thank you for being better than my teacher :"0

[@juliestace1883]

Thank you! Very helpful graphics!!!

[@superdroid22]

thanks man! That really help me me A LOT

[@denalinarendran4332]

Very helpful! Anyone here in 2024?

[@AveRage787]

me

[@catz1235]

Nice and simple. Thank you!

[@TheCanadiangirl4]

Thank you, it definitely was helpful

[@shayanhussain7802]

Best Explanation ever

[@Tylerstrodtman]

I still don't understand how if the reaction consumes heat, that it gets colder. Am I wrong to equate heat and energy?

[@islamicreminderswithyahya2585]

Tyler Strodtman the reactants gain heat from the surroundings but the surroundings loses it as a result. It’s like me saying I gave someone money. He gained it, I lost it. Since that is the case, the reactants gain energy as heat from the surroundings and the surroundings loses it, making it cooler.

[@hadeerrashad5486]

Excellent explanations! Thank u so much!

[@psychedelicmermaid2]

Very Helpful.Thank you!

[@KazumaAkuma]

Thank you so much sir. I am crying because of this work of yours.

[@Zickolasity]

That was helpful to my science work today, it's due tormorrow.

[@samdedmon8674]

THIS IS POG. subbed

[@gopher2345]

Please come to Palos Verdes high school and be my Biology teacher!

[@zacharymiller1452]

Surprising how he can explain something that takes my teacher 5 DAYS TO EXPLAIN

[@kabirvohra9989]

thanks so much this was really helpful

[@TRT-ds9bh]

geez...... I wish I could do that to uranium, if u get what I mean

[@fabianjoule]

good stuff

[@lillyg6632]

Thank you this channel helps with my revision :)

[@evolgrim4139]

thank you so much you saved my ass in science lol much love and i wish you were my teacher

[@rhys.williams7194]

My teacher is shit, so this helps a lot

[@impressivetelevision9729]

thanks for nice presentation!

[@jacobguthrie6231]

Well, well, well, Mr. Anderson.

[@liveyczaraligno2475]

In basing the temp at the last example ... shouldnt an object get hotter if it absorbed energy?(endothermic)

[@ExothermStudios]

Thanks for the tip now I fully understand what my name means!

[@Nissreen-amri]

thank you so much :) could you please make a video on pka and pkb/ Ph Buffer systems

[@atticusgaming.rp.925]

Thank You for helping me by explainig

[@godzillasantos5190]

So easy to understand my friend :D

[@camilamurillo466]

Mr, I do not understand why if the system receives heat in an endothermic reaction, why does it become colder. (As you explained in the last part of the video.)

[@MwlGano]

The mixture is a system and the beaker is the enveronment. If you touch the beaker it becom colder bcoz heat is taken by the system. Exothermic becom hot coz the reaction produce heat and supply to enveronment. Heat absorbed is stored as chemical energy in chemical bonds formed,so it's not necessary to become hotter.

[@camilamurillo466]

@@MwlGano Thank you so much!!!! Your explanation was very helpful.

[@MohdAzylee]

So helpful thanks!

[@rafalfalih2957]

In an assignment my teacher is asking of me to make a graph that has the specific amount of energy. How could you find out how much energy is in the reactants and product?

[@jean-henryseymour6927]

Will there be any change in endo or exothermic reactions if the quantity/concentration of reactants is changed?

[@doggosgobork525]

There will be no change, besides the ammount of energy emitted

[@landom8006]

you should make merch

[@asdfghjkl45245]

why is the last reaction endo-thermic?? if exo-thermic is heat given out to the surroundings, doesn't it loose heat so it becomes colder?? sorry for the confusion

[@maximedfdf]

It is an endothermic reaction because it is consuming heat from the surroundings. If you burn wood, for example, you "use" the energy in the wood to "give" thermal energy (the fire) and radiation energy (the light) to the environment. So, this is an EXO THERMIC reaction. Let's say you have solid ice. When you make it hotter (by holding it above a fire for example), the ice will melt and become water. So basically you "give" energy from the environment to the system. So, this is an ENDO THERMIC reaction. And when you put the water in to the freezer, the water will give it's heat to the environment and become ice again. So, this is an EXO THERMIC reaction. If you're torn between EXO or ENDO, then think whether the object gives energy to the environment or gets energy from the environment. I hope I helped you!

[@TypicalMrGamer]

I know what you mean. In the image you're thinking he was measuring the temperature of the reaction itself, but essentially he's measuring the surroundings (the solution in the beaker) because it wouldn't make sense to measure the temperature of the reaction itself. And like what the person above me explained, the reaction is endothermic because it takes heat from its surrounding (the solution in this case) to process it itself, and therefore, the solution in the beaker is colder than what it was previously.

[@titi14fan]

Love u mr Anderson thaaaanks ❤️

[@jonwilly2]

i wasnt expecting my name in this channel

[@papa_cookies8405]

Sensational 🤞

[@Simple-2-]

Man City for life!!!!!!!!

[@joeyhaley2988]

thx that was really helpful

[@annabethchase7743]

Thank you😁

[@mrmuzo4952]

Very Helpful, More on Science Please

[@ryanandlewis2]

very good

[@wuddleduddle2437]

Great video

[@mahshadash3758]

Thanks!

[@shafeymushtaqch1493]

1:16 Macroscopicly

[@NoorAli-uh4uq]

freezing liquid water to ice is it endothermic or exothermic?

[@allyreny]

+Noor Ali My assumption would be an exothermic reaction, as heat is being released. Cooling is defined as the release of heat, as opposed to the consumption of cold.

[@RXBeegle]

+Alyssa Smyers no but again with the the ice pack it is loosing heat around it and the ice will fell cold so it is an endothermic reaction

[@allyreny]

No, he was asking about LIQUID WATER being frozen. In an ICE PACK the reaction is endothermic. If it's just standard H2O being frozen, it would be an exothermic reaction because heat is being released and the liquid is being converted to a solid.

[@allyreny]

Ryan Beegle ^ Sorry XD forgot to tag you.

[@Max-kp2zu]

It is an endothermic reaction because the water is the surroundings and it is losing heat while the chemical bonds are absorbing heat.

[@kailees3152]

Is there a decrease In temperature for an endothermic reaction?

[@lavenderminte5416]

Yes

[@Emily-qq3my]

Thanks a lot 😊

[@milkywayandbeyond]

I know that during an exothermic reaction, the temperature of the surroundings increases due to chemical energy being converted into thermal energy (and the reverse for endothermic reactions), but does the temperature of the system (the products and reactant molecules/atoms themselves) also experience a change in temperature, or just a change in stored energy? Thanks a lot for the help.

[@adhamhamza5527]

yo listen bru the last 1 is an exothermic reaction as the prodcut after mixing with chemicals the temperature droped means that heat was given out correct it it caused confunsuon bruh

[@lunarathod8887]

The temperature dropped in the water surrounding the substance meaning that the substance was absorbing heat making it an endothermic reaction. Bruh do u even science

[@Nice69]

Nice video.

[@dilanaslan2699]

It was helpful thanks

[@59ecs]

i just love the comments it is really funny

[@shaeseavey9000]

My teacher assigned this video with a paper like 4 days ago I still don’t wanna do this

[@shaheduddin1189]

In exotermic heat realeased at product side or not because f less energy

[@abdulrahmanalsalem3366]

That was helpful but endothermic reaction wasn't really clear

[@Lolo99pineapple]

yup I got an A :D

[@JasonLee-ei5iw]

Congrats

[@kharjai5433]

This doesn't help me at all. I need to know WHY this happens. Help?

[@demitrilowe564]

thank you

[@shaheduddin1189]

Give answer as soon as possible

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holy crap, you're a life saver/

[@Pk_pk123]

Kuper?

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Bozeman is a nice town

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Hi

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He is good

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[@mariaorsic9763]

excellent!!!1