The first step is to keep a separate notebook for chemistry subject.
Use different coloured pens, highlighters, and sticky notes to highlight important definitions, keywords, examples, and formulas.
When preparing notes, avoid referring to a lot of reference books. Refer to the books that are recommended by your teachers.
While writing the notes, keep in mind to keep them short and precise. This will help you during revision.
Try to include as many equations and diagrams as you can, as this will make it easier for you to remember the details.
Use flowcharts to explain processes and procedures rather than memorise them.
Electricity is supplied
Light is supplied
Heat is supplied
Adding a few doodles in between your notes, will help you keep motivated while studying.