As much as they would deny it yes, there would is (from looking at previous years where say 2/3 of dot points have been covered but only 1/10 twice) a tendency to cover a higher percentage of dot points that have yet to be asked in a hsc exam.
I wouldn't change your study pattern too drastically though. Also this pattern tends to fail when it comes to multiple choice but really a decent chem. Student shouldn’t loose more than one or two marks there.