Knowing the topic is not the same as answering the question.

A sentence I often hear

A syllabus tells you what can be examined. It does not tell you exactly how the paper will combine ideas, hide the demand inside familiar language, or distinguish an answer that sounds correct from one precise enough to score.

After a disappointing result, students often say, “I knew the topic.”

They may be right. Knowing the topic and answering the question are different performances.

How I read a Chemistry question

Before solving, I look for five things.

Exam-question fluency is not memorising mark schemes

Students sometimes try to solve precision by collecting model sentences. That can help with language, but it becomes another form of dependence if the student cannot decide when the sentence applies.

Fluency means understanding the relationship between:

• the wording of the question;
• the chemical principle;
• the conditions given;
• the distinction the answer must preserve;
• the form of evidence the mark scheme accepts.

The goal is not to sound like a mark scheme. It is to think clearly enough that the required language becomes natural.

A worked example

Here is an original question written for this page:

Magnesium oxide has a much higher melting point than carbon dioxide. Explain the difference in terms of structure and bonding.

A plausible weak answer is:

Magnesium oxide has strong ionic bonds, while carbon dioxide has weak covalent bonds.

The student has noticed that the substances are bonded differently, but the answer misses the distinction that controls the melting point. Carbon dioxide has strong covalent bonds inside each molecule. Melting does not break those bonds. It overcomes the much weaker forces between the molecules.

An improved answer is:

Magnesium oxide has a giant ionic lattice with strong electrostatic attractions between oppositely charged Mg²⁺ and O²⁻ ions. A large amount of energy is needed to overcome these attractions. Carbon dioxide is made of simple molecules. Only the weak intermolecular forces between its molecules are overcome when it changes state, so much less energy is needed.

This earns credit because it names both structures, identifies the forces that are overcome, and connects their relative strength to the energy needed. The improvement is not a longer answer. It is a more exact one.

Misconceptions need names

“Revise this chapter” is often too large an instruction.

A student may not have a chapter problem. They may have one recurring misconception that appears across several questions. They may confuse energy with rate, amount with concentration, strong with concentrated, or what they can see with what is happening between particles.

Repair begins when the error is named precisely.

Then the student needs three things:

1. a clear contrast between the wrong model and the correct one;
2. a fresh question that requires the distinction;
3. a delayed return to check whether the correction lasted.

What a ready student can do

A ready student should be able to:

• identify the command and the chemical idea;
• separate recalled knowledge from applied reasoning;
• show working that another person can follow;
• use units, signs, conditions, and significant figures deliberately;
• explain why a first attempt failed;
• try an unfamiliar question without waiting for rescue;
• check whether the final answer is chemically sensible.

This is a higher standard than completing notes. It is also a more useful one.

What parents can ask

You do not need to become the Chemistry teacher.

Ask the student to show you one wrong answer. Can they explain what the question required, what they did instead, and which distinction they missed?

If the only explanation is, “I was careless,” the problem has not yet been named. The parent guide gives a fuller weekly method for following one important error through.

The wider argument

Chemistry makes one wider education problem visible: familiarity can look like understanding until the question changes.

Better teaching does not remove difficulty. It makes the difficulty precise enough to work on. The ability to reason, correct, and explain is what the student carries beyond the paper.

Chemistry courses

My full courses live on Alt Academy. These pages explain who each course is for, what the qualification demands, and how I approach the teaching before you decide whether to continue to Alt.