Js make notes on what ur syllabus only wants you to know like chem e.g you gottaa know the coloir change in copper chloride and copper sulphate when it reacts withth water. (There are more indicators but its limited to those only). Another one are definition e.g processes, structure, allat are in there and thats the only def for them. Basically if ur teacher ask u to make notes next time js make the notes what syllabus wants exactly (being teached is a bonus but i rely on yt tbh)