nonono...
if you got u it means ...
ah..how can i explain it
ok...in a rude manner it simply means you scored below E( from the highest grade it's ABCDEU)..(sorry for the harsh words)
the Chemistry grade is coming from your score in each component (P1, P2,P3, P4,P5)(for more information on the percentage you can check the syllabus)
from what i remember, p1 only worth 20% to your AS score...15% to your A level score
so let's say you get U in P1, A in P2, A in P3
YOUR CHEMISTRY GRADE WILL BE 'A'(maybe B) IN YOUR STATEMENT OF RESULTS
however, you will receive another paper where it's written
that you got U in P1, A in P2, A in P3...you don't need to think much about this because all you need is
the 'A' IN THE STATEMENT OF RESULTS...
that A in the statement of results will be your A level results and that's all u need to worry about...
cheer up....
i swear you can believe me
if you score good marks on the other chemistry papers, you need not to worry ..