How to Turn IGCSE Chemistry from Nightmare to A*

At Chemonboard, I hear this story again and again.

“Am I just not good at chemistry?”

If you are feeling this, please pause here for a moment.

Once you understand that style and learn how to prepare for it, not just around it, moving toward A*, A or grade 8–9 becomes completely realistic.

Let’s talk about what is really going on—and then build a clear, practical plan.

Why IGCSE Chemistry Feels So Hard

1. You understand the notes… but not the idea

Many important IGCSE topics—like bonding, redox, energetics, and equilibria—are concept‑based, not “mug‑up‑based”.

So what usually happens?

Students often:

• Memorise the definition of ionic and covalent bonding
  
  

• Learn “OIL RIG” (oxidation is loss, reduction is gain) without truly visualising electrons
  
  

• Try to remember what an energy diagram looks like, but not what it means
  
  

Then in the exam, the question is wrapped in a new situation:

• A different compound
  
  

• A new diagram
  
  

• An unfamiliar experiment
  
  

2. The hidden mathematics inside chemistry

Many students don’t expect this much maths inside chemistry.

Chapters like:

• Moles and stoichiometry
  
  

• Empirical and molecular formula
  
  

• Concentration calculations
  
  

• Gas volumes
  
  

need you to:

• Handle units carefully
  
  

• Follow the multi‑step working process
  
  

• Stay calm when numbers look messy
  
  

Even students who are good at science can struggle because:

• They skip steps in working
  
  

• They guess instead of writing the logic
  
  

• They practise only 3–4 questions and then stop
  
  

Slowly, “mole concept” changes from “interesting” to “I hate this topic”.

3. Application‑based questions: same concept, new face

One important truth about IGCSE Chemistry:

The exam is not a direct copy of your textbook.

Examiners love to test understanding through:

• Industrial examples (like the Haber process, Contact process)
  
  

• Environmental contexts (pollution, acid rain, greenhouse gases)
  
  

• Unfamiliar reaction equations
  
  

• Data and graphs you have never seen before
  
  

So you may know the topic in a general way, but still lose marks because:

• The information looks new
  
  

• You’re not sure which part of your knowledge to use
  
  

• You freeze when you see a “strange” question
  
  

4. Practical and data‑handling skills are under‑practised

Another area that quietly pulls marks down:

• Reading and interpreting graphs
  
  

• Understanding experimental setups
  
  

• Suggesting improvements to experiments
  
  

• Spotting sources of error in a lab situation
  
  

The Hardest IGCSE Chemistry Topics (and How We Tackle Them)

Let’s look at them one by one, not to scare you, but to show you that each has a way out.

1. Moles and Stoichiometry

Why does this topic feel so tricky

Here, you are asked to connect:

• Mass
  
  

• Relative atomic/formula mass
  
  

• Mole ratio from balanced equations
  
  

• Gas volumes or concentrations
  
  

So after a few bad experiences, students start thinking, “I just can’t do mole questions.”

How we handle it at Chemonboard

When I work on this with a student, we do not start with difficult past‑paper questions.

We start with:

• What a mole actually is (not just “6.02 × 10²³”)
  
  

• Why do we balance equations (conservation of mass)
  
  

• A clear step‑by‑step calculation template
  
  

Then we use:

• Simple visual diagrams to show relationships between moles, mass, and volume
  
  

• Fully worked examples where every step is explained
  
  

• Gradual progression of difficulty, instead of jumping from very easy to very hard
  
  

• “Find the limiting reactant.”
  
  

• “Calculate the volume of gas produced.”
  
  

• “Find percentage yield or purity.”
  
  

Once they recognise the type, they already know the method. Confidence starts to return.

2. Electrolysis

Why does this chapter scare many students

Electrolysis puts together:

• Ions in solution or molten form
  
  

• Electric current
  
  

• Half‑equations
  
  

• Products at each electrode
  
  

Many students try to memorise:

• “In this electrolysis, this comes out at the cathode.”
  
  

• “In that one, this gas is formed at the anod.e”
  
  

But the moment the electrolyte or electrodes change, they feel lost again.

The Chemonboard way of simplifying electrolysis

We turn electrolysis into three questions:

1. Which ions are present?
   
   

2. Which ions will be discharged at each electrode?
   
   

3. What are the half‑equations?
   
   

We use  exam‑style questions.

3. Chemical Energetics

Why does it feel vague and “in the air”

Energetics asks you to understand:

• Exothermic vs endothermic reactions
  
  

• Energy level (profile) diagrams
  
  

• Bond breaking vs bond forming
  
  

• Overall energy change
  
  

Because you cannot see energy like you see colour or precipitate, it feels unreal.

So students cling to definitions and hope the question will be basic.

How we make energetics feel real

First, we bring it down to daily life:

• Burning fuel or a candle → gives off heat → exothermic
  
  

• Cold packs used for injuries → absorb heat → endothermic
  
  

Then we:

• Walk through energy profile diagrams slowly: reactants, products, activation energy, overall change
  
  

• Link bond energies to “energy in – energy out.”
  
  

• Practise with past‑paper diagrams where students must label or interpret what is happening
  
  

Very often, once they “see” the energy with their mind’s eye, energetics stops being mysterious and starts becoming marks.

4. Organic Chemistry

Why do students feel it is “too much”

In organic, you suddenly meet:

• Homologous series
  
  

• General formulae
  
  

• Naming rules
  
  

• Isomers
  
  

• A list of reactions and conditions
  
  

At first glance, it feels like chemistry has turned into a language with too much vocabulary.

How we organise it at Chemonboard

We don’t try to swallow the whole thing in one go.

Instead, we:

• Take one functional group at a time (for example, alkanes, then alkenes, then alcohols)
  
  

• Fix the naming rules with a few clear examples
  
  

• Show reaction types using simple flow diagrams, so students see how one compound changes into another
  
  

A Practical 4–6 Week Revision Roadmap Before Exams

Weekly time guide

Aim for 6–10 focused hours per week, in small blocks:

• 45–60 minute sessions
  
  

• Short breaks
  
  

• One lighter “just revision” day
  
  

Consistency matters more than “heroic” long days that leave you exhausted.

Weeks 1–2: Fix your foundations

Focus on:

• Moles and stoichiometry
  
  

• Bonding and structure
  
  

• Basics of acids, bases, and salts
  
  

Example of a simple daily task:

• 20–30 minutes: revise a small part of the theory (e.g., mole formulae, ionic bonding)
  
  

• 20–30 minutes: do 2–3 exam‑style questions on that exact idea
  
  

• 10 minutes: check the mark scheme and write down where you lost marks (misreading, missing unit, incomplete explanation)
  
  

Goal: solid ground, not shaky memory.

Weeks 3–4: Aim at high‑weight, high‑confusion topics

Focus on:

• Electrolysis
  
  

• Energetics
  
  

• Rates of reaction and equilibria
  
  

Tasks can include:

• Interpreting and sketching diagrams
  
  

• Doing data‑based questions from past papers
  
  

• Practising written explanations using proper scientific language
  
  

Goal: build application skills, not just a recollection of notes.

Weeks 5–6: Real exam training

Now the focus shifts to:

• Mixed past papers under timed conditions
  
  

• Detailed mark‑scheme analysis
  
  

• Targeted revision of weak topics that keep showing up
  
  

Here, you train yourself to:

• Understand command words (describe, explain, calculate, predict, etc.)
  
  

• Show working clearly
  
  

• Avoid typical mistakes that examiners mention again and again
  
  

Goal: walk into the exam feeling, “I have seen this style before. I know what to do.”

A Short, Honest Note for Parents

If you are a parent reading this,

Two things often happen together:

• Your child is genuinely trying
  
  

• The marks are not yet matching the effort
  
  

This is very normal in an application‑based exam system.

What helps the most is:

• A calm, predictable routine at home
  
  

• Encouragement to practise past papers regularly
  
  

• Focusing on progress (“earlier you were at 4, now your last paper looks like 6”) rather than only the final grade
  
  

The Most Important Truth I Want You to Remember

If IGCSE Chemistry feels difficult right now, it does not mean:

• You are bad at science
  
  

• You cannot reach an A or A*
  
  

• You should lower your target
  
  

It simply means:

You haven’t yet been shown the right way to prepare for this particular exam.

Once you combine:

• Clear concepts
  
  

• Targeted practice
  
  

• Mark‑scheme awareness
  
  

Your marks can move from 5–6 towards 8–9 more quickly than you expect.

Your Next Step (Whenever You’re Ready)

If you feel stuck and don’t know where to begin, you don’t have to figure it all out alone.

You can:

• Book a short trial IGCSE Chemistry session with us, where we go through your doubts and your recent papers, or
  
  

• Use a simple checklist and 4‑week plan to organise your own preparation
  
  

Either way, our aim is the same: