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IGCSE Chemistry: Cambridge 0620 tutoring, Malaysia

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IGCSE Chemistry Diagnostic Test: Find Your Child's Topic Gaps

24 quick multiple-choice questions, two from each of the 12 Cambridge 0620 topics, written to the syllabus. About 15 minutes. At the end you get an instant topic-by-topic report showing exactly where the gaps are, with a link to free revision notes for each one.

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An indicative sample, not a mock exam. Nothing is stored and no details are asked for — the report appears right here on the page.

Question 1

Question 1 · States of Matter

Which change of state is condensation?

Question 2

Question 2 · States of Matter

A purple crystal of potassium manganate(VII) is placed in a beaker of still water. After an hour, the purple colour has spread through the water. Which process explains this?

Question 3

Question 3 · Atoms, Elements and Compounds

A neutral atom has 11 protons and 12 neutrons. How many electrons does it have?

Question 4

Question 4 · Atoms, Elements and Compounds

Which statement best describes an ionic bond?

Question 5

Question 5 · Stoichiometry

What is the relative molecular mass (Mr) of carbon dioxide, CO2? (Ar: C = 12, O = 16)

Question 6

Question 6 · Stoichiometry

How many moles are there in 8 g of sodium hydroxide, NaOH? (Mr = 40)

Question 7

Question 7 · Electrochemistry

Molten lead(II) bromide is electrolysed. What forms at the cathode (negative electrode)?

Question 8

Question 8 · Electrochemistry

Which statement about electrolysis is correct?

Question 9

Question 9 · Chemical Energetics

In an exothermic reaction, what happens to the temperature of the surroundings?

Question 10

Question 10 · Chemical Energetics

On a reaction pathway diagram for an exothermic reaction, where are the products compared with the reactants?

Question 11

Question 11 · Chemical Reactions

Marble chips react with dilute hydrochloric acid. Which change would increase the rate of reaction?

Question 12

Question 12 · Chemical Reactions

Water is added to white anhydrous copper(II) sulfate. What colour change is seen?

Question 13

Question 13 · Acids, Bases and Salts

Which pH value shows a strongly acidic solution?

Question 14

Question 14 · Acids, Bases and Salts

An acid reacts with an alkali to form a salt and water. What is this type of reaction called?

Question 15

Question 15 · The Periodic Table

Going down Group I (the alkali metals), what happens to reactivity?

Question 16

Question 16 · The Periodic Table

Elements in the same group of the Periodic Table have the same number of what?

Question 17

Question 17 · Metals

Which metal is extracted from its ore by electrolysis because it is too reactive to be extracted with carbon?

Question 18

Question 18 · Metals

Which two substances must BOTH be present for iron to rust?

Question 19

Question 19 · Chemistry of the Environment

Which gas, produced by burning fossil fuels, is a major contributor to the enhanced greenhouse effect?

Question 20

Question 20 · Chemistry of the Environment

In water treatment, why is chlorine added to the water?

Question 21

Question 21 · Organic Chemistry

What is the general formula of the alkanes?

Question 22

Question 22 · Organic Chemistry

Which compound turns orange aqueous bromine colourless when mixed with it?

Question 23

Question 23 · Experimental Techniques and Chemical Analysis

A lighted splint is held at the mouth of a test tube and burns with a squeaky pop. Which gas is present?

Question 24

Question 24 · Experimental Techniques and Chemical Analysis

Which method is used to separate the coloured dyes in a sample of ink?

How this diagnostic works, honestly

Each question is written to the Cambridge IGCSE Chemistry (0620) syllabus at Core level, two per topic, and targets a fact or skill that appears in real exam papers. Two questions per topic can reveal a gap; they can't measure its depth. Treat a low topic score as a flag worth investigating, not a verdict.

The full version of this diagnosis is what happens in the 1-hour trial lesson: a vetted specialist probes the flagged topics with real past-paper questions and tells you plainly where your child stands and what a realistic target grade looks like.

Turn the gap report into a plan

One WhatsApp message books the 1-hour trial lesson. Your child's tutor starts with their weakest topic and you get an honest written assessment afterwards.

Book a Trial Lesson How the trial lesson works