Energetics | GCSE & IGCSE Chemistry | Science with Hazel

Hazel takes you through the GCSE and IGCSE chemistry topic of energetics, focusing on exothermic and endothermic reactions, how to draw energy level diagrams, the effect of using a catalyst and walks through examples of how to calculate enthalpy change (delta H).

These videos are designed to help with your GCSE and IGCSE science revision.

To keep up to date with my Science with Hazel videos and support:

Hazel completed her undergraduate degree at St John's College, the University of Cambridge. She then did a PGCE (Post-Graduate Certificate of Education) before qualifying as a science teacher. She now works full time as a professional tutor.

Material required for Level 9 is included.

[DanishaKeyla]

I was just watching your all in one video desperate to learn this topic yesterday! Couldn't be more perfect! Thank you :)

[jeronjustin]

OMDS i was just about to learn this. Thank you for making it so much easier for me👍

[fathimaafzal]

Thank You very much, this the exact video that I needed for tomorrow's test. I absolutely love your videos.

[tahmidali]

Love you Hazel, you are an important teacher for me...Keep it up, These videos are very helpful

[mohamedfaisal]

thank u so much teacher may you please do one on rates of reactions e.g. graphs and all that stuff otherwise Thank u and may God bless you teacher so remember to make that one for us thanks otherwise

[egghead]

Sorry maam but how is it possible for it to be 22.3? Its not lower then 22.2? 3:02

[belindadgayle]

Hiya Hazel! Hope you are well! You helped me so much w/ my GCSE. Thankyou! Any tips for Cambridge international A-level Geography?? Any1??

[basimusmani]

can someone explain what formula she used at time 6 mins, moles = volume/pressure. where is this formula from ???

[phoenixbroderick]

ayo aint gonna lie ur such a g for this

[kkkkkkkk]

Really your teaching was very beneficial to me to understand very quickly and now I can answer these types of questions in the exam

[to_discover_life]

Thanks this is so good cheers. Also with the question at 12:03 if i didn't round to 3 s.f would they not give me the mark?

[wolfeeb]

thankyou so much, i was overcomplicating myself

[Chad_af]

So freaking helpfull god bless you madam

[bint__abdalla___]

I THINK there's something wrong with the last answer the equation is good but the final answer is wrong I THINK .
BECAUSE when you calculate 51.9/0.0261 you will get -1988 but in the vid it says 1990 .
12:01

[ХАН-фц]

Hello, my English level is not good, and I want to understand you. But you speak so fast. I had to watch with subtitles 😁

[egghead]

I ma be honest i would had a better time reading the book u made my head hurt fr