#2 Making Flashcards ---->The course is full of Chemical symbols, Chemical formulas and very scientific language. Interpreting all of these concepts correctly is key to your success in Chemistry. Once you have created a good set of flashcards containing the periodic table of the elements and formulas, memorisation will become much easier.
#3 Take Notes--->In Chemistry, it is necessary to write down everything and understand what you taking notes on. Formulas and equations are far easier to understand once written down and presented in the right way.
Hope this helps!!
Read and process, by process I mean one or both of the following:
Speak. Speak it out loud, try to explain it to yourself as if you were a teacher or a lecturer. Read and then try to explain it to yourself without looking at the textbook. Get back to the textbook afterwards and see if you missed anything and/or explained something slightly wrong. Additionally, teaching others is an excellent way of getting things to stick in your mind. The teacher always learns more than the student.
Write. Write down notes once looking through the textbook, and then write notes on everything you have just written/read without looking.
This is what I did at A-Level. A-Level is about 80% memory, 20% knowledge in my experience with the Sciences. So these techniques are pretty useful and extremely useful at University for certain topics that require a slight emphasis on memory.
Go through derivations of formulae, get to know your formulae, where they come from, what's significant about them and their assumptions, (More of a university thing, but good to get used to at A-Level).
-Try to understand the concept rather than memorise word for word
-Practice doing lots of exams questions