Chemical Energetics - Calculating Energy Changes

[@jamescairns6912]

Really helpful video, simple yet allowed me to plough through A level papers tonight with over 99% success! Thank you SOOO much.

[@amanynabil8058]

u have no idea how happy I am u make me pass my chemistry exam very easy. thank u very much

[@RayyanSaboor]

You're a life saver I hope May Allah help you with your problems and stuff

[@rofltomatoe]

Thanks so much Alex! You are a great help in my GCSE's. Thanks!

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Who needs a revision guide, when we have your videos?

[@andyvhot]

your videos are really helping me prepare for my exams thank you so much

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You have no idea how happy Iam.

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I love your hand writing by the way. :P

[@cameronguan4688]

An excellent video-well made! Great content.

[@요섭말랑콩찹쌀떡]

LOVE U TEACHER U ARE SO GENIUS❤❤❤❤❤❤❤❤❤❤

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Dudeeee this is awesone!

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put the captions on in English its brilliant and great vid

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Thank you so much. Your amazing. Love ur handwriting :)

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your videos are life-saving! thank you so much!!!

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Your videos are the best!

[@milkba.r]

literally saved me thank you!!!!!!

[@jerielpascual4055]

can someone explain me why there is a triple nitrogen bond there, idk where it came from

[@boomsaint7893]

Just one question: How do I know if the end result makes the reaction endothermic or exothermic?

[@요섭말랑콩찹쌀떡]

if the answer is positive=endothermic, if negative=exothermic

[@trulienjulie]

what pen do you use?

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thank u so much it was so hard to me before i saw these video

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thank you very much , very underrated

[@ilovepancakes47]

Your videos are ah-mazing! Thank you so much! :D

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Where were you when i was in chemistry?

[@yaqoobqp]

really good video!!

[@romanashaharyar5734]

Very helpful

[@littlemissmagic08]

You are so helpful! Thank you very much!!! :-)

[@Hahokjedpad5678]

very good my SON !!!!!!!!!!!

[@accountantinlaw]

Thank you very much.

[@MsShumzy]

thank you!!!!

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WOWH thanks

[@helpdesk9299]

👍

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😀 thank u

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