How to Answer Structured Questions in IGCSE Science

IGCSE Science papers have a particular sting.

Leaving the exam with an “I knew that” feeling.
And then you get your results, and it doesn’t show.

Let’s be clear: the reason most students aren’t getting top marks isn’t that they can’t understand Physics, Chemistry, or Biology. Because they don’t answer the question.

Structured questions in IGCSE Science are not about understanding, but rather technique. Your understanding of command words, your answer structure, and your answers’ alignment with the mark scheme are critical.

This article will teach you:

• Understand IGCSE Biology command words and exam terminology
• Structure your answers according to the mark scheme
• Use our IGCSE Chemistry and Physics exam tips
• Understand IGCSE Physics calculation questions

IGCSE Exams Secrets: Understanding “Command Words”

Each IGCSE paper is in a language. Their language is command words.

Get them wrong and you might get an idea, but your marks won’t reflect it.

State vs. Describe vs. Explain

• State / Name
  Short. Direct. No fluff.
  Typically 1 mark = 1 fact.
• Describe
  Paint the picture. Emphasise patterns, progression or transformations.
  Say what you see.
• Explain
  This is where it counts for your mark.
  Provide explanations via science. Not only what, but why.

A common mistake? If you write an “Explain” like a “Describe”. Done wrong, this can lose you 2-3 marks.

Calculate and Determine

Students lose marks at their own risk.

With IGCSE Physics ‘calculate’ questions:

• Write the formula
• Show all workings
• Substitute clearly
• Don’t forget the unit!

Working is essential (no marks without working, even if the answer is right).

The “Marks to Minutes” Rule

There are no marks (or minutes) for greeting duckies. They are a compass.

A 4-mark question expects:

• 4 scientific ideas
  • not a single paragraph that explains a single point in detail.

Quick rule:

• 1–2 marks → 1–2 points
• 3–4 marks → 3–4 points
• 5-6 marks → compound explanation with reason

If you aren’t writing more content but more words, you’re losing marks.

Acquiring the Habits of Success in Structured Questions

IGCSE Biology

Precision is everything.

Examiners dislike clειςExaminers don’t like casualspeak:

• Say “turgid”, not “swollen”
• Say “flaccid”, not “soft”

For questions on experiments:

• Name variables (independent, dependent, control)
• Describe how to measure the results
• Relate to the hypothesis

Here lies the problem for most students.

IGCSE Chemistry

Details win marks.

IGCSE Chemistry exam tips:

• Balance equations perfectly
• Use state symbols (s, l, g, aq) where relevant
• For exam questions on reaction rate, tie in to collision theory

For calculations:
Use the step-by-step approach:
mass → moles → ratio → final answer

Omitting steps = losing marks.

IGCSE Physics

Physics rewards structure.

Follow the FWAU method:

• Formula
• Working
• Answer
• Unit

This can get you marks just for the method – even if you get the answer wrong.

For theory questions:

• State the law (Newton’s laws, etc)
• Use it to answer the question

No storytelling. No rambling. Just plain logic.

3 Mistakes to Avoid in IGCSE Science Exams

1. Waffling
   More words isn’t more points.
   They are reading for ideas.
2. Contradicting Yourself
   Any incorrect sentence can invalidate a correct one.
   When in doubt, keep it, brief.
3. Ignoring Context
   Don’t write vague explanations.
   Relate your answer to the given context.

Tackle Your IGCSE Science Exams with ORIENT Academy

The truth is, answering IGCSE Science questions is a learned skill.

And like all other skills, this takes:

• Practice
• Feedback
• Expert correction

At ORIENT Academy, we teach you how to translate your knowledge into marks.

With over a decade of success in converting failing students to A and A* in Physics, Chemistry, and Mathematics, ORIENT emphasizes:

• Structured question mastery
• Command word precision
• Exam practice
• Feedback via the ORIENT Learning Framework

Looking for a better IGCSE score?

If your child knows it all, but struggles to pass exams, it’s time to improve their exam skills.

👉 Schedule a Free Academic Check Up at our Cyberjaya campus
👉 Or check the ORIENT Workshop Series (OWS) exam prep workshops

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The reason is that you need to show how you know.
How you answer is everything.