Hello,

To be good at chemistry, you should first remember the periodic table thoroughly.

Remembering the periodic table thoroughly means you should not just remember the elements name but also their different properties, reactions and exceptions. Then you should move on to the molecular formulae, then their reactions and equations. I would suggest you to make a chart of all those molecular formulae, their reactions, equations,etc and revise those daily through written practice. Now coming to numerical part of the chemistry, first learn the basic concept of the problem's topic,then learn the formula and try to practice at least one question on that topic everyday. Also try to do study with NCERT textbooks, It might seem compact, but once you get through it you will master the subject.

Hope this helps .

Thank You!