Author: Erada Oguntoye
Platform: Brashan Chemistry Website
Date: Wednesday, 18 March 2026
Topic: Mastering STEM Exam Command Words – Part 1

Unleash Your Exam Potential: Decoding the Secret Language of STEM

Have you ever walked out of a Chemistry or Biology exam feeling like you nailed it, only to receive your results and find you missed out on top marks? You knew the content, you understood the cycles, and you memorized the formulas. So, what went wrong? Often, the culprit isn't a lack of knowledge: it’s a misunderstanding of command words.

In the world of GCSE and A-Level STEM, command words are the imperative verbs that tell you exactly how to build your answer. If the examiner asks you to "Explain" and you merely "Describe," you are leaving marks on the table. At Brashan Chemistry, we don't just teach you the periodic table; we empower you to speak the language of the examiner. Our lead tutor, Dr. Erada, specializes in helping students transition from "vague" to "vivid," ensuring every word you write contributes to an A* result.

Hack 1: The "Describe" vs. "Explain" Divide

This is the most common pitfall for STEM students. To unlock higher grades, you must distinguish between these two:

• Describe: Think of this as a "word picture." You are stating what is happening or identifying main features. If you see a graph, describe the trends. Is it increasing? Is it constant? No "why" is needed here.
• Explain: This requires you to set out purposes or reasons. You must use the word "because." If you are explaining a trend in ionization energy, you aren't just saying it increases; you are explaining why the nuclear charge and shielding affect the outcome.

Hack 2: Master the Cognitive Ladder

Every exam paper is designed with a hierarchy of thinking. Lower-level questions ask you to State, Define, or Label. These are simple recall tasks. However, as you progress through the paper, the cognitive demand increases. When you see Evaluate or Justify, the examiner is looking for a higher level of maturity in your writing.

By recognizing these levels, you can manage your time effectively. Don't spend five minutes on a "State" question worth one mark. Save that mental energy to soar through the multi-step "Analyze" questions that follow.

Elevate Your Summer with Brashan Chemistry

Are you ready to stop guessing and start succeeding? Our Summer Booster classes for Years 10 – 13 STEM students are specifically designed to bridge the gap between year groups and master these vital exam techniques. We dive deep into the nuances that turn a Grade 6 into a Grade 9, or a B into an A*.

Early-bird boost: Get 10% off when you book your Summer Booster place before the end of June.

Join our community of high achievers today and discover how we can transform your academic journey.

ALL CONTENT IS SUBJECT TO UPDATES. PARTICIPATION IN SUMMER BOOSTERS REQUIRES PRIOR REGISTRATION. BRASHAN CHEMISTRY TERMS AND CONDITIONS APPLY.

Author: Erada Oguntoye
Platform: Brashan Chemistry Website
Date: Wednesday, 18 March 2026
Topic: Mastering STEM Exam Command Words – Part 2

Hack 3: The Art of the Evaluation

When a question asks you to Evaluate, it is inviting you to be a judge. You cannot simply list facts. You must use your analysis to make a considered judgment. This usually involves looking at two sides of an argument: perhaps the pros and cons of a specific chemical synthesis or the ethical implications of genetic engineering.

To excel in evaluation:

1. Present evidence for both sides.
2. Use "however" or "on the other hand" to show balance.
3. End with a clear, supported conclusion.

Hack 4: Analyze Before You Conclude

To Analyze means to examine something methodically and in detail. In STEM, this often involves interpreting data or explaining a complex mechanism step-by-step. Think of yourself as a detective. You are breaking a large concept into smaller parts to see how they relate to one another. Dr. Erada and our team of expert tutors work one-on-one with students to ensure their analytical writing is sharp, logical, and impossible for an examiner to fault.

Hack 5: Precision in Comparisons

Many students lose marks by being one-sided when asked to Compare or Contrast.

• Compare: You must identify both similarities and differences.
• Contrast / Distinguish: You are strictly looking for the differences.

If you are comparing two types of bonding, use comparative language like "whereas," "similarly," or "unlike." This signals to the examiner that you are directly addressing the relationship between the two subjects, rather than just listing facts about each in isolation.

Unleash Your Full Potential

Don't let vague language hold you back from the university place of your dreams. Whether you are tackling GCSEs or pushing through the intensity of A-Levels, mastering these command words is the ultimate "cheat code" for exam success. Our tailored tutoring approach at Brashan Chemistry focuses on these fine details, helping you unleash your full potential in every assessment.

Discover our holistic approach to STEM education here.

ALL CONTENT IS SUBJECT TO UPDATES. PARTICIPATION IN SUMMER BOOSTERS REQUIRES PRIOR REGISTRATION. BRASHAN CHEMISTRY TERMS AND CONDITIONS APPLY.

Author: Erada Oguntoye
Platform: Brashan Chemistry Website
Date: Wednesday, 18 March 2026
Topic: Mastering STEM Exam Command Words – Part 3

Hack 6: The Calculation Command Center

In STEM, command words aren't just for essays; they dictate your math too!

• Calculate: You must show numerical working. Even if your final answer is right, a lack of working can cost you marks if you’ve made a small transcription error.
• Sketch: This doesn't mean a messy doodle! It means a neat diagram that shows the key features (like asymptotes or intercepts) without needing to be perfectly to scale.
• Prove: This demands a logical, step-by-step mathematical argument where each line follows clearly from the previous one.

Hack 7: Subject-Specific Nuance

Did you know that "Describe" might mean something slightly different in A-Level Chemistry than it does in GCSE Biology? In Chemistry, a description of a reaction might require color changes and state symbols. In Biology, it might require naming specific organelles.

At Brashan Chemistry, we provide the latest, cutting-edge insights into subject-specific mark schemes. We help you recognize that "Discuss" in a science context isn't a chat; it's a structured review of evidence and hypotheses.

Journey Together Towards Success

Mastering exam technique is a journey, and you don't have to walk it alone. Watch your achievements soar as you gain the confidence to look at any exam paper and know exactly what is being asked of you. Our Summer Booster programs for Years 10, 11, 12, and 13 are the perfect environment to sharpen these skills before the new academic year begins.

Ready to elevate to new heights? We are here to guide you every step of the way. From multi-step STEM calculations to the nuances of organic chemistry, we ensure you are prepared for anything the exam board throws at you.

Get in Touch

Ready to secure your spot in our Summer Boosters?

• Website: brashanchemistry.com
• Contact Us: Click here to get started
• Programs: View our full range of booster sessions

Stay up to date with the latest exam tips by visiting our blog and joining our growing community of STEM stars! 🚀

ALL CONTENT IS SUBJECT TO UPDATES. PARTICIPATION IN SUMMER BOOSTERS REQUIRES PRIOR REGISTRATION. BRASHAN CHEMISTRY TERMS AND CONDITIONS APPLY.