Stuck at a grade 7 GCSE AQA chemistry (triple)

Hello everyone, I am a year 10 student and we have some really important mocks in about a week that decide our predicted grades.
Our teachers made an attempt to predict our grades a few months back- and they were lower than I had expected; I think I could have gotten higher.
For example they predicted me a 6 in chemistry, but every time I do a past paper I get a grade 7.
I want to study chemistry A level at a prestigous 6th form, so when I apply I obviously want my predicted grades to be very high.
I miss most of my marks due to the mark scheme, I don't word it exactly how they worded it, and the mark scheme says to "ignore" stuff which is also where I lose loads of marks.
Does anyone have any tips on how I can push my grade up to a grade 8 or 9 for the mocks?
Also, so if I were to get a grade 7- what grade do you think they would predict me? (seeing as they predicted me a grade 6 before).
Everything I just said also applies to physics
Thanks!

probably a 7 or 8 - were the mocks actual papers or modified

The mocks that are coming up are the actual papers, but for science we are only doing paper 1.
We had "mocks" previously which is what our teachers tried to predicted our grades off of, but they were quite modified.

not sure then - sometimes I got dodgy predicted

Hello everyone, I am a year 10 student and we have some really important mocks in about a week that decide our predicted grades.
Our teachers made an attempt to predict our grades a few months back- and they were lower than I had expected; I think I could have gotten higher.
For example they predicted me a 6 in chemistry, but every time I do a past paper I get a grade 7.
I want to study chemistry A level at a prestigous 6th form, so when I apply I obviously want my predicted grades to be very high.
I miss most of my marks due to the mark scheme, I don't word it exactly how they worded it, and the mark scheme says to "ignore" stuff which is also where I lose loads of marks.
Does anyone have any tips on how I can push my grade up to a grade 8 or 9 for the mocks?
Also, so if I were to get a grade 7- what grade do you think they would predict me? (seeing as they predicted me a grade 6 before).
Everything I just said also applies to physics
Thanks!