I can't thank you enough for your immense passion and generousity, you give the same amount of attention to each and every question and dont gloss over anything, i wish you all the best on whatever u have going on, mcq paper is in 1 day and i sincerely thank you for guiding me this far lol
Endothermic & Exothermic If the initial temperature is higher than the final temperature, that reaction is endothermic [ initial > final ] If the initial temperature is lower than the final temperature, that reaction is exothermic [initial < final ] Endothermic reaction requires energy (mostly heat / thermal), the energy (the reaction requires) is taken from the mixture, and the temperature of the mixture decreases. Which is why the initial temp is higher than the final temp. [ initial > final ] Exothermic reaction releases energy ( heat / thermal ), the energy ( heat / thermal ) is released from the reaction and into the surroundings (the mixture), and the temperature of the mixture increases. And the initial temp would be lower than the final temp. [ initial < final ] ========================================================================================================= Question 12 The question is asking for which is the least exothermic. [ the question is asking for EXOTHERMIC ] So B and C can't be it, since they are endothermic (which isn't considered exothermic). A and D is the options left A. 19 ---> 25 [ Difference = 6 ] D. 22 ---> 26 [ Difference = 4 ] D has a smaller difference, so its D! =============================================================================================================== Recap: Endothermic Reaction • Requires energy • Initial temp > Final temp • Energy is provided by the mixture Exothermic Reaction • Releases energy • Initial temp < Final temp • Energy is released into the mixture Tip: ENDOthermic the ENDO part is like enter, so it requires energy EXOthermic the EXO part is like exit, so it releases energy [The endo and exo part represents the flow of energy] I hope you understand :)
Hey, my Paper 2 O Level exams for Physics and Chemistry are coming up. Can you please create videos for all the variants of October/November and May/June?
I can't thank you enough for your immense passion and generousity, you give the same amount of attention to each and every question and dont gloss over anything, i wish you all the best on whatever u have going on, mcq paper is in 1 day and i sincerely thank you for guiding me this far lol
Your explanations are top notch! Please keep uploading videos like this.
Ur videos are literally the best
Could u make one for paper 23 may june 2023
you explain it soo well!! Thank you!
Most welcome 🤗
Please create a video providing tips for Paper 2 in both physics and chemistry. Thank you
11:19 in question 12 the answer should be b or c because in exothermic the change is negative
Exothermic releases heat to surroundings.
@@learntodayIGCSEyes hence, initial temperature should be higher than final temperature
@layaal-eh5vb answer is D
Exothermic is heat released towards surrounding. So the surrounding temperature will increase.
Endothermic & Exothermic
If the initial temperature is higher than the final temperature, that reaction is endothermic [ initial > final ]
If the initial temperature is lower than the final temperature, that reaction is exothermic [initial < final ]
Endothermic reaction requires energy (mostly heat / thermal), the energy (the reaction requires) is taken from the mixture, and the temperature of the mixture decreases. Which is why the initial temp is higher than the final temp. [ initial > final ]
Exothermic reaction releases energy ( heat / thermal ), the energy ( heat / thermal ) is released from the reaction and into the surroundings (the mixture), and the temperature of the mixture increases. And the initial temp would be lower than the final temp.
[ initial < final ]
=========================================================================================================
Question 12
The question is asking for which is the least exothermic.
[ the question is asking for EXOTHERMIC ]
So B and C can't be it, since they are endothermic (which isn't considered exothermic).
A and D is the options left
A. 19 ---> 25 [ Difference = 6 ]
D. 22 ---> 26 [ Difference = 4 ]
D has a smaller difference, so its D!
===============================================================================================================
Recap:
Endothermic Reaction
• Requires energy
• Initial temp > Final temp
• Energy is provided by the mixture
Exothermic Reaction
• Releases energy
• Initial temp < Final temp
• Energy is released into the mixture
Tip:
ENDOthermic
the ENDO part is like enter, so it requires energy
EXOthermic
the EXO part is like exit, so it releases energy
[The endo and exo part represents the flow of energy]
I hope you understand :)
@@learntodayIGCSEyes but in the question we are talking about the temperature in reaction not in surroundings
awesome
✨✨GODDESS ✨✨
Ahahaha 🤣
Hey, my Paper 2 O Level exams for Physics and Chemistry are coming up. Can you please create videos for all the variants of October/November and May/June?
hi how do we know in question 14 whether the CO bonds we take should be double bonds or single bonds? your reply is much appreciated ❤
Please can you send a link for this thank you!
The Oct Nov 2023 papers are released officially. You can find them online :)
Hi first of all thanks for the amazing videos. But would you make the next video on how to prepare for our exams?
Thank you in advance
Most welcome
And I’ve made one on that
PLEASE POST NEXT VIDEO, I HAVE EXAM TOMMOROW
Sorry it’s late but I’ve posted now :)
ua-cam.com/video/I2FBNxsYX9A/v-deo.htmlsi=oVNQ-1XNG4yfK4hj
@@learntodayIGCSE Never mind 😃
@siddhigada5038 hope your paper went well !
@@learntodayIGCSE I hope that too ✨♥️
@@learntodayIGCSE I have maths paper on Monday any tips and tricks??