@@jasmin4518 All of this content is on the current spec (p.26 of specification document), although the exam questions he uses as examples are from the old spec.
i cant thank you enough for what you are doing, any doubts that i had regarding chemistry got cleared thanks to you, u sir are a legend and i really hope you continue making vidoes
I do not quite understand the last portion the gradient is negative as you say and this mean that value of entropy change is similarly negative,how then ca you say that the entropy change is positive in the next question?
The line shows d.G becoming more negative as d.T increases. This would happen only if d.S is positive because in the equation, it is d.H-T*d.S. If d.S were negative, - and - make + so you would have to add d.H and d.S which means as T increases, d.G increases. This doesn’t go with the graph as the graph shows as T increases, d.G decreases. Therefore d.S has to be positive.
Hi Eliot - just out of curiosity, what do you use for writing? Your text is very consistent, it looks like some kind of font software. If it's actually your handwriting you are astonishingly consistent. Nice videos, by the way.
I watch these videos and get what you're talking about mainly, but I'm not sure if I should do Chemistry A Level because of the jump from GCSE to A Level. Could you advise me?
+Harpistry i found that the beginning of AS was very difficult and i didn't have a clue what was join on, and i hated it and wanted to drop it at the end of yr 12, now I'm doing A2 and everything makes sense! I'm resetting as well because i only got a B last year and honestly it seems so much easier now and i have no clue why i didn't understand it, even this year i understand things so much better, so yeh i would go for it!!
+Liz Paul I mean I got a B in Chemistry and an A* in Biology and really struggled with Chemistry then, but looking at AS I understand it! I just get the feeling I have to know everything or I'll fail, is that how it is?
I got a C for AS Chemistry because I failed one paper completely even though I did really well on the others, so I am resitting those. A-Level Chemistry is a huge step-up from GCSE Chemistry so if you find GCSE Chemistry hard then its not going to get any easier. But if you are dedicated and good at learning and remembering stuff then sure, A-Level Chemistry might be something for you.
Derpy Thanks for your perspective. The hard part for me isn't remembering - my memory has saved me in many an exam - but the mathematical parts are what I don't find so easy. Still, I do like the idea of going into Medicine, which basically requires it! What's the hardest part, remembering, understanding or mathematical parts?
+Harpistry All I would say is that a GCSE grade isn't a very good indicator to A-Level grades! As far as whether you should take Chemistry goes, I have a vested interest, but I would say yes! It's a great subject and looks fantastic on a uni application and CV! It's hard, but provided you are aware that it won't be a walk in the park and you work hard from day one, you'll be fine.
Thank you so much! However, transition metals is the part that i think most people find challenging as theres just so many reactions and observations to remember etc. Will you be making a video on it?
Your videos are fantastic! Could you make playlists for the physical, inorganic and organic sections of the second year for the new spec? That would be great! Thanks! :^)
Could you please consider doing a video on esters and synthetic routes, I do realise your actively making videos, but if you could eventually that would be great help:DAnd thank you for all the other great videos too, their really really useful for either first time learning in some cases or for great tips and revision points!!
+Qwerty Tamil I would suggest only starting papers once you are completely happy that you know all of the content. But you should have been revising for a few weeks by now!
23:08 the Haber process takes place at 700K even though it's no longer feasible above 464K, can someone pls explain why it still occurs at the high temperature? thanks
hello sir! hope you are doing well... It would be really kind of you if you could let me know about the minus.... in the equation when delta g becomes zero and we rearrange it where does the minus go? Delta G= delta H - T delta S T= delta H over delta S Missing minus....do we ignore it? I am really looking forward for your reply.... Its okay... if anybody else reading could help me.... =)
+E Rintoul is there one for cycles with enthalpy of atomisation, ionisation, lattice formation/dissociation etc? I think i'm caught up with formation and combustion on their own
i don't get why in the second graph question 3b2 you took the entropy positive despite the graph showing it as negative cause the gradients negative 28:00
is there any chance of you completing this section off? You'd be a life save if you could do the auto catalysis/catalyst section and finish off the Transition metals. Love your videos, they are a great help.
love your videos! they really help me as my teachers are not the best at explaining, would it be possible for you to do one on period 3? would really appreciate it!!!
no the CaO + CO2 are the products because they are PRODUCED as a result of the reaction (thermal decomposition reaction). the LHS is always the reactants and the RHS is always products
