Kramizo
Log inSign up free
HomeCIE IGCSE ChemistryThe mole concept and Avogadro's constant
CIE · IGCSE · Chemistry

The mole concept and Avogadro's constant
Practice Questions

20 CIE IGCSE Chemistry questions on The mole concept and Avogadro's constant, each with instant feedback and a full examiner-style mark scheme.

⚡ Start Quiz on The mole concept and Avogadro's constantTry one question

Try 2 sample questions on The mole concept and Avogadro's constant

Question 1 · 1 mark · Difficulty 1/3

What is the value of Avogadro's constant?

  1. 6.02 × 10²³ per mole
  2. 6.02 × 10⁻²³ per mole
  3. 6.02 × 10²⁴ per mole
  4. 6.02 × 10²² per mole
Show answer & explanation
✓ Answer: A6.02 × 10²³ per mole
02 × 10²³ per mole. Award 1 mark for correct identification of Avogadro's constant. B is incorrect — this is the reciprocal with wrong power. C is incorrect — the power is 23, not 24. D is incorrect — the power is 23, not 22.
Question 2 · 1 mark · Difficulty 1/3

A fertiliser company in Indonesia produces ammonium sulfate, (NH₄)₂SO₄, for agricultural use. What is the relative formula mass (Mr) of ammonium sulfate? [Ar: N = 14, H = 1, S = 32, O = 16]

  1. 114
  2. 132
  3. 146
  4. 164
Show answer & explanation
✓ Answer: B132
Award 1 mark for correct calculation: (2 × 14) + (8 × 1) + 32 + (4 × 16) = 28 + 8 + 32 + 64 = 132. A is incorrect — this omits one nitrogen atom. C is incorrect — this adds an extra oxygen atom. D is incorrect — this counts 10 hydrogen atoms instead of 8.
⚡ Start a Quiz on The mole concept and Avogadro's constant
20 questions · 25 min · free

CIE IGCSE Chemistry: The mole concept and Avogadro's constant FAQ

How many CIE IGCSE Chemistry questions on The mole concept and Avogadro's constant are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on The mole concept and Avogadro's constant for CIE IGCSE Chemistry, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Chemistry?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix The mole concept and Avogadro's constant practice with other Chemistry topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the The mole concept and Avogadro's constant questions aligned to the official CIE IGCSE Chemistry syllabus?
Every question is written against the published CIE IGCSE Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is The mole concept and Avogadro's constant typically tested on CIE IGCSE Chemistry papers?
The mole concept and Avogadro's constant appears across multiple question types on real CIE IGCSE Chemistry papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

Lock in The mole concept and Avogadro's constant before exam day.

Start practising in 30 seconds — no card required.

⚡ Start Quiz Free →