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Allen Guo received an ATAR of 99.95, and two state rankings! He placed 4th in Chemistry, and 10th in Physics in NSW. In this post, we share Allen’s Chemistry hacks for scoring 97/100 and getting a NSW State Rank.
My name is Allen Guo and I recently graduated from The King’s School. I hope to study medicine at UNSW in the future.
Chemistry is a subject that blends together the importance of conceptual understanding as well as memorising important facts and figures to supplement answers given. As a result, your approach towards Chemistry should vary based on what point you are at in the course.
Learn the basic concepts, preferably ahead of your school schedule, eg. via the Matrix Holiday Accelerated Chemistry Course. Flag any particular concepts you struggle with so you remember to revisit them.
At school, you will revisit the same topic allowing your memory to be refreshed. Take this opportunity to complete extra practice questions, apart from the Matrix Work Book, to ensure you have a comprehensive understanding of the topic covered.
Don’t neglect any part of the syllabus. Regardless of how small they may be, make sure you understand the concepts you struggled with earlier as they may cause unnecessary stress later down the line.
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Below is an example of my study rhythm for exams:
Since your internal rank is very important, all school assessments should be treated very seriously. Personally, I had 2 pracs and 2 written exams (Trials and HY) contributing towards my final cumulative internal mark.
When preparing for school assessment tasks:
My trials were only 4 days after another important deadline, so I felt pressed for time when it came to preparing for my Chemistry trial exam. To streamline the process, I only reviewed the concepts I had flagged as my weaknesses, before quickly skimming through the Matrix Theory Books for a general overview. Afterwards, I would dot point my answers for practice papers and refer to the answers for sample responses as well as being very selective with the questions I attempted.
This allowed me to attempt multiple papers in a short span of time and identify weaknesses that needed to be fixed. As the final step towards my revision, I wrote up a sheet of all the areas where I made mistakes or needed more work/examples and checked them off a couple of days prior.
I had much more time to prepare for my HSC Chemistry exam, meaning that I could implement an effective study timetable. I would complete a past paper one day and then review it the next. Every time I got a concept wrong I would add it to a final review list, which I went over the last few days before my Chemistry exam.
I wish I had:
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Written by Guest Author
We have regular contributions to our blog from our Tutor Team and high performing Matrix Students. Come back regularly for these guest posts to learn their study hacks and insights!© Matrix Education and www.matrix.edu.au, 2025. Unauthorised use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Matrix Education and www.matrix.edu.au with appropriate and specific direction to the original content.