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 RUclips are teaching me in 10 minutes my teachers can't do in 6 hours of class time. Thank you for making these videos.
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 .
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!
TQ Mr Anderson !! Very straightforward & clear-cut explanation to differentiate Endothermic & Exothermic reactions , together with examples & energy profile diagram !! 👍🏻👍🏻
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).
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 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
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
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?
3 года назад
i swear i have the same question and nobody answer it
@ 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
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").
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.
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.
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?
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.
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.
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
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!
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.
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.)
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.
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 RUclips are teaching me in 10 minutes my teachers can't do in 6 hours of class time. Thank you for making these videos.
Thank you!!! My teachers suck!!!
Omg same so does mine.
meilssa premo At that time- it was her first time teaching chemistry, in english!
this genuenly saved my life, i have my chemistry exam tomorrow and i was so close to giving up. THANK YOU!!!
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 .
i learned more in 5 minutes than this whole half of my school year
Try Studying
@@shafeymushtaqch1493 No
@@shafeymushtaqch1493 NERD ALERT
@@Alastor__HHikr
It's sad because this guy teaches better than my Bio Honors teacher
same
Thank you for making me understand in 5 minutes and not a 75 minutes long school lesson XD
+jessica Bignall I know what you mean
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!
TQ Mr Anderson !! Very straightforward & clear-cut explanation to differentiate Endothermic & Exothermic reactions , together with examples & energy profile diagram !! 👍🏻👍🏻
I'm a french speaking one but it has been easier to understand the video in English.
Good job!
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).
Thank you, this was very helpful; I learnt more in this 4 minute video than I did in my hour long chemistry lesson :)
I learned more in 4 minutes than in 2 50 minute classes, wow you're amazing.
yesss! omgg I was literally looking for this just yesterday! thank youu so much. my teacher clearly doesn't know how to teach...
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.
@@ronanpflanagan shut up
@@Pk_pk123 ????
@@fishythefish7984 i said shut up can you not read
@@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
Best intro on youtube
this video was clear and easy to understand
Wow. This channel is great
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
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
thank you so much you made this very simple and easy to understand
Your videos are SO helpful. THANK YOU SO MUCH. It's greatly appreciated by students everywhere.
Wow!
Thank you for giving me a chance to watch. :)
Your subtitles (captions) help me a lots!
Thank you for making this! I learned a lot in the video.
My bio teacher with a doctorate isn’t even teaching us we just have to search videos and hope for the best
Agh! Thankyou. I have a test on this tomorrow!
I want to say thank you! I don't know why but this helped me understand endothermic and exothermic WAYYYY more :)
Really helpful thank you for that informative videp
I don't understand 4:03, if it is consuming heat from the surroundings wouldn't that mean it would be heating up?
Very helpful! Anyone here in 2024?
me
Thank you, it definitely was helpful
Best Explanation ever
Thank you! Very helpful graphics!!!
good stuff
thanks man! That really help me me A LOT
Excellent explanations! Thank u so much!
thank you for being better than my teacher :"0
Nice and simple. Thank you!
Very Helpful.Thank you!
Now I'm curious. What if you have what should be an endothermic reaction but separate the process from any surroundings?
That was helpful to my science work today, it's due tormorrow.
thanks for nice presentation!
Please come to Palos Verdes high school and be my Biology teacher!
Thank you so much sir.
I am crying because of this work of yours.
thanks so much this was really helpful
So helpful thanks!
Sensational 🤞
Man City for life!!!!!!!!
THIS IS POG. subbed
thank you so much you saved my ass in science lol much love and i wish you were my teacher
Thank You for helping me by explainig
Thanks!
Well, well, well, Mr. Anderson.
Thank you this channel helps with my revision :)
Great video
Thanks for the tip now I fully understand what my name means!
My teacher is shit, so this helps a lot
Surprising how he can explain something that takes my teacher 5 DAYS TO EXPLAIN
very good
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
@ 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
Love u mr Anderson thaaaanks ❤️
thx that was really helpful
So easy to understand my friend :D
Nice video.
for the last example, WHY does it consuming HEAT make it *colder* that makes no sense it consumed heat so it should be warmer
GreenShot yeah why's that????
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").
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.
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.
Thanks a lot 😊
Thank you😁
Very Helpful, More on Science Please
It was helpful thanks
thank you so much :) could you please make a video on pka and pkb/ Ph Buffer systems
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?
yup I got an A :D
Congrats
holy crap, you're a life saver/
I still don't understand how if the reaction consumes heat, that it gets colder. Am I wrong to equate heat and energy?
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.
i just love the comments
it is really funny
Will there be any change in endo or exothermic reactions if the quantity/concentration of reactants is changed?
There will be no change, besides the ammount of energy emitted
In basing the temp at the last example ... shouldnt an object get hotter if it absorbed energy?(endothermic)
cheers mate :)
thank you
you should make merch
veeery helpful
geez...... I wish I could do that to uranium, if u get what I mean
excellent!!!1
i wasnt expecting my name in this channel
I love you
Bozeman is a nice town
Is there a decrease In temperature for an endothermic reaction?
Yes
Great!!:}_
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.
My teacher assigned this video with a paper like 4 days ago I still don’t wanna do this
He is good
1:16 Macroscopicly
thanks!!!!!
thank u sir
Thank you you really halp me 😍
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
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!
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.
ah so this is hell.
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.)
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.
@@MwlGano Thank you so much!!!! Your explanation was very helpful.
I commented on the video
yes
That was helpful but endothermic reaction wasn't really clear