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ok thank you so much

Yes ill be restarting live stream lessons this weekend

Yes will be restarting live streams weekly probably tuesdays in the week

Hi there drop me an email at letsgettothemarks@gmail.com

Hi if you are taking the ISEB foundation paper then it is a 60 minute test which is split into bio chem and physics roughly a third of the marks on each section. You have 6o minutes to complete the test and the questions are worth a total of 80 marks.

@@letsgettothemarksThank you so much

@@letsgettothemarksDo you have any book recommendations for someone who is not very good at science?

@@jamescooke-k7r Are you studying for the ISEB or for GCSE combined science

@@letsgettothemarks iseb

@@mxslimxh Not yet will make a part 3 for this Ill put it out next week

@@letsgettothemarks tyy

@@nefertiiti.777 Let me know of theres any topics you would like a video on and ill do a walk through for some questions

Hi glad you enjoyed the walk through. For 8.1 at the start of the reaction we have 0. 60 moles of A and O moles of product C as the reaction hasnt happened yet. However we are told at equilibrium we have 0.28 moles of C.So where did those moles come.from? Well C is in a 1:1 ratio with the reactant A so for every mole of C made 1 mole of A is used up. As we have 0.28 mole of C we used up 0.28 mole of A. We had 0.60 mole of A at the start so now we only have 0.32 mole.of A left at Eq. In contrast B is in a 2:1 ratio with C so we actually used 0.56 (0.28*2) of B sononly have 0.04 left after (0.60-0.56=0.04)

I am doing another Live on tuesday on cell structure

@@letsgettothemarks Can you do it tonight?

Hi which exam board are you studying and to what level. Ill make a video for that

@@letsgettothemarks im doing a level and chemistry ocr

@@absolutelynot_here yes ill make one of those on protein structures

@@absolutelynot_here Yes spot on Amylose is coiled but a straight chain with no branches so only 1-4 glycosidic bonds. Amylopectin has both as is highly branched this means it is faster to catalyse and release glucose for respiration. Obviously with animals they move around unlike plants so they need to hydrolyse or catalyse or breakdown their energy store even quicker so Glycogen is very highly branched ao wven more 1-6 glycosidic links than amylopectin

This is for triple. Or separate science Chemistry only

@@letsgettothemarks i do combined as my school doesnt offer triple but the video was so easy i did it in under 2 mins

@@liveclips669 well done. If your doing aqa combined you wont need atom economy. However I have some walk throughs for combined science

@@liveclips669 Here are some.combuned science walk throughs ruclips.net/p/PL69RpPzEmvOjpAoWTGnpLbaMVUJZApf6U&si=_-o7hEB8XagaSy3N

Hi so we are told the concentration of NaOH is 0.350mol dm -3. The mean titre is the volume of NaOH in the titration. This means we have both the volume and concentration for NaOH so now this is the starting point for a titration now you can do n= cxv and calculate the moles or n of NaOH. This gets your first marks on the board in any titration. Next we use the ratio which we can deduce by writing an equation to workout the ratio of NaOH to sodium ethanoate is 1:1 so now we know the moles of Sodium ethanoate. From there we can deduce mass using mass = mr x n and then percentage mass using the original mass in question

Hi it should work the otherway around aswell

@@AbdiSaciid-jy1sh I will be starting some live streams in the next 2 weeks. I will be starting with cells

@@absolutelynot_here yes whichbexamnboard are you studying just deciding in a day and time will do a once a week for bio and chem

​@@letsgettothemarks aqa thats wht most ppl do and maybe Saturday or Sunday

@@letsgettothemarks bio ocr a and chem aqa

@@absolutelynot_here Nice my lessons will work for all exam boards as ill point out any differences

@@shouryagupta6873 Somewhere on their website there is also a paper that asks strucural questions

@@letsgettothemarks oh really? I applied for Philosophy, Econ, Maths and Geography, so would be great if you can link some of the past papers for those subjects/maybe even go over them on a video. You explain very well by the way!

Good luck

so true

@@MohamedOmar-k1t So in year 12 if you are AS or A Level you study the same. However the way the content is examined at AS is different to how yhe content is examined in year 13. In year 13 you learn new content with a small percentage of overlap from year 12

We worked out the ratio of abundance of ti48 was 20 hence y =20. However the total abundance in this question is out of 25. Look at the first set of working out we know the first 3 ratio abundances were 2 2 1 and then we got 20. Now the question asks to find % abundance of 46 they already gave us thebratio abundance of 2 for ti46 so what is that as a % we do 2 /25.× 100. So its 8 percent

@@letsgettothemarks i understooddd , thankyou soo much

@@sleepdeprivedalevelstudent Thats right. However easy mistake to make if you miss out the word effective. You used to gain marks in the old syllabus for talking about nuclear charge. If your worried about making mistakes you can just talk about force of attraction to the nucleus. More shielding less force of attraction to rhe nucleus.

Well spotted. I was focussing on the CO2 a little too much just add the correct amount of water to balance the hydrogen. Also in the photosynthesis equation I didnt bother balancing the H20 which is criminal. 😅 I shall add that error to the description thnx

Lol enjoy your holidays and rest. You have a nice break before starting the next chapter of your life. Dont stress about results just keep pushing forwards