Cambridge IGCSE Chemistry 0620 Paper 2 Sample 2019
This sample paper mimics the real extended multiple-choice format that separates high scorers from others—30% of students misread oxidation state questions, and another 20% lose marks on stoichiometry because they haven't drilled mole ratios. Inside you'll find 20 questions spanning atomic structure, bonding, chemical equations, energetics, equilibrium, and inorganic chemistry, all weighted and timed like the actual IGCSE paper. This is ideal preparation for Year 11 students sitting Cambridge IGCSE Chemistry 0620 who want to move beyond guessing. By finishing this paper and checking your reasoning against the worked solutions, you'll lock in pattern recognition for the most predictable question types and know exactly which topics to revise harder before sitting the real exam.
Questions in this quiz
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- Question 1
Which of the following correctly shows the electron configuration of a potassium atom (atomic number 19)?
- Question 2
When an oxygen atom gains two electrons to form an O²⁻ ion, which statement is true?
- Question 3
Which element has the highest first ionisation energy in Period 2?
- Question 4
The atomic radius of sodium is larger than that of magnesium. Why is this the case?
- Question 5
Which compound is held together by ionic bonding?
- Question 6
Sodium chloride has a high melting point and conducts electricity when molten, but not when solid. What does this tell you about its structure?
- Question 7
Balance the equation: ___ Mg + ___ O₂ → ___ MgO
- Question 8
What is the molar mass of calcium carbonate (CaCO₃)? (Ca = 40, C = 12, O = 16)
- Question 9
2.4 g of carbon is completely burned in oxygen. How many moles of carbon are burned? (C = 12)
- Question 10
Using the balanced equation: 2 Mg + O₂ → 2 MgO, how many moles of MgO are produced when 2 mol of Mg react?
- Question 11
Which statement best describes an exothermic reaction?
- Question 12
Which of the following would increase the rate of a chemical reaction?
- Question 13
In a reversible reaction at equilibrium, which of the following is true?
- Question 14
What is the oxidation state of sulfur in H₂SO₄?
- Question 15
Which compound is an acid?
- Question 16
What is the pH of a neutral solution at 25°C?
- Question 17
Sodium reacts with water according to the equation: 2 Na + 2 H₂O → 2 NaOH + H₂. Which of the following is true about this reaction?
- Question 18
In the electrolysis of molten sodium chloride, which product forms at the cathode?