GCSE Chemistry - Exothermic and Endothermic Reactions #43
ฝัง
- เผยแพร่เมื่อ 6 ส.ค. 2024
- In this video we cover :
- What exothermic and endothermic reactions are
- What reaction profiles are and how to draw them
- What activation energy is and how we show it on reaction profiles
If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
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- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A comprehensive bank of past exam papers, organised both by year, and also by topic.
Amadeus & Tom
even though I cant make use of these resources personally since my exams are almost done, I really, really appreciate your hard work for us students! Thank you so much!
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Sir I have a question, so if I put a cold water bottle out from the fridge and now it is gaining heat in order to balance its temperature with the room temperature so will it count as an endothermic reaction?
This guy is the reason why I am understanding chemistry
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how'd it go??
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my chemistry teacher took 50 minutes class and i didn't understand a shit,
you only took five minutes and i understand everything now , great video man keep it up!
i love how you explain the activation energy, it's simple and very helpful to understand.thank you
Glad you enjoyed it Nur! 👍
Appreciate your videos man, hope you the best of luck in your future plans.
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We've had 4 lessons on this in class, I didn't get it one bit, but a five minute video or yours is great, Ive started to get it, thank you cognito
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Thank you for this video! It helped me understand the concept better!
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Glad you liked it Mishael 😊
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@@tobyellis3639 Are you sitting for this oct/Nov?
Monica Ruben fortunately not, I’ve got my exams in June 2021
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Tomorrow I final exam on chemistry that includes this topic an you might be the reason that I get a good mark - Thank you! So much
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same same
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same
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i agree
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how is your polish now is it better
@@therealworlduploadsI imagine it’s quite decent
i have a mid term tmrw and im HORRIBLE at chemistry but u just saved my life thanks so much!!! Pls keep making videos!
Same 😂
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love the video........really helpful
This has to be the best exothermic and endothermic reaction video out there!! Thank you sooo sooo much!!
Thanks Cynthia, glad to hear you enjoyed it 👍
thank u so much, it's clear
Why isn't this auto-subtitled? No CC
he made my life so much easier and this is GCSE chemistry, while we are taking this in g7🙁
g7? do ya mean year 7?
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Very good brother
THANKYOU❤
Bro honestly can u have a word with my chemistry teacher she dont even teach she js says look in the textbooks ur videos are honestly amazin
how do we know wether the products have high energy or not? so we can either place them low or high?
A good chemistry textbook should present a list of bond energies called enthalpies. Like a mass balance, you only have to count de bonds in a given compound adding theír respective enthalpies. And a simple enthalpy balance between the products and reactants of a given chemical reaction will let you know whether the reaction is exothermic or endothermic by a calculation known as the reaction enthalpy.
i love u thank u for this
Wait so is a chemical reaction in which the reactants have more energy than products exothermic or endothermic
Exothermic
thank you sir once again
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My honest opinion is that Mr. Cognito is a savior of our exams❤❤❤
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You are a Pooki
Are the graphs if endothermic and exothermic in the video catalysed. I don't quite understand
Same😢
Thank you
Th
Anks
❤ its good
very gud thankoioooo i get 1st placositon in my met h subjict aht meh skoulE
My chem gcse is tomorrow I’m watching these in hopes of passing
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I can't get my head around the endothermic reaction because I would have thought that because it requires more energy to start the reaction the reactants would have a stronger bond (more energy) ?? plsss someone help
Yes They have stronger bonds so they need more energy to break these bonds
Hi sir, I would like to know the software that you used tp produce the video? Thank you sir
SAVER OF LIFE
😄😄
Oh my GOD my final exam is in an hour I learnt the topics my teacher gave me but the test questions are sooo hard
This is the same video
Hi Zayn - it is! We're re-uploading this vid as we decided to make some small changes to timing of it as we felt it was a bit fast. Tomorrow will be a new upload though :)
Thank you so much...chemistry has always been such a mess for me!!!!....one correction, at the end when you wrote chemicals on the graph for the endothermic reaction, you wrote CaO+O2 instead of CaO+ CO2.
Thank you!
Look at 2:52, he wrote CO2
@@nabeelahmed4862 5:21 I'm talking about the energy level diagram.
I'm trying to wrap my head around this question, but why do the reactions between metals sulphate solutions considered as exothermic?
I asked my teacher and when she reply me I will answer you
because the bonds in the reaction are being formed, and this releases energy, hence considered exothermic lmao tell me if this helped
@@nawal8790 this really helped, thanks
@@sail4549 anytime :)
His lisp when he says destroyed at 1:30 makes it impossible to not laugh
Tbh your as good as my teach BUT your a good revision
i had fun actually but im not that type of person who likes chemistry often
shut up no one cares frfr
4:43
I understand nothing...
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Skill issue
Helal olsun
when you have to watch science videos for online lessons 😭
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you talk really fast, it would be much more helpful if their were captions
you can change the playback speed if he talks too fast
@@immanuelfarag3664 that didntvwork
cool.
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I never understand big words in chemistry smh
I didn't understand
hello
if a reaction is endothermic surely it would get warmer as it is taking energy in
it is taking in energy making it's surrounding and itself colder.
I know you wrote this a while ago, but it can be either. It just matters if it's taking in energy or not.
Life savar
Warning ⚠️: "no energy was made or destroyed in this video"
ughhhhhhhhh
Æ
Anybody here from teams lessons?
whos teacher sent you here
Shrimplin
Ew I mean ey
bruiv