What resources should i rely on to make flashcards for aqa science gcse?

I need to make flashcards for chemistry aqa gcse, but i do not know which resource to use specifically, such as physics and maths tutor, my cgp book or free science lessons, because they all have their advantages and disadvantages, because in chemistry exams, even the definition of a key term that you memorise will be marked wrong, and i want to find notes that cover the whole specification and would be accepted by the aqa mark scheme, i have not tried making notes based off of free science lessons yet, and my cgp books sometimes have odd definitions and im worried it wont be accepted by the exam board, but also, ive heard that physics and maths tutor does not cover some parts of the specification, and key notes are sometimes missing like in organic chemistry.
What sould i do?

I need to make flashcards for chemistry aqa gcse, but i do not know which resource to use specifically, such as physics and maths tutor, my cgp book or free science lessons, because they all have their advantages and disadvantages, because in chemistry exams, even the definition of a key term that you memorise will be marked wrong, and i want to find notes that cover the whole specification and would be accepted by the aqa mark scheme, i have not tried making notes based off of free science lessons yet, and my cgp books sometimes have odd definitions and im worried it wont be accepted by the exam board, but also, ive heard that physics and maths tutor does not cover some parts of the specification, and key notes are sometimes missing like in organic chemistry.
What sould i do?