Kramizo
Log inSign up free
HomeCIE IGCSE ChemistryChemical Reactions
CIE · IGCSE · Chemistry

Chemical Reactions
Practice Questions

206 CIE IGCSE Chemistry questions on Chemical Reactions, each with instant feedback and a full examiner-style mark scheme.

⚡ Start Quiz on Chemical Reactions

Try 2 sample questions on Chemical Reactions

Question 1 · 1 mark · Difficulty 1/3

Why does increasing concentration increase reaction rate?

  1. The temperature increases
  2. Particles become lighter
  3. Particles become larger
  4. More particles per unit volume means more frequent collisions
Show answer & explanation
✓ Answer: DMore particles per unit volume means more frequent collisions
Higher concentration = more reactant particles in the same volume = more collisions per second = faster rate.
Question 2 · 1 mark · Difficulty 1/3

Why does increasing surface area increase reaction rate?

  1. A catalyst is formed
  2. The substance gets heavier
  3. More particles are exposed at the surface, increasing collision frequency
  4. The temperature rises
Show answer & explanation
✓ Answer: CMore particles are exposed at the surface, increasing collision frequency
Crushing a solid into powder exposes more surface area. More reactant particles are accessible for collisions with the other reactant.
⚡ Start a Quiz on Chemical Reactions
20 questions · 25 min · free

CIE IGCSE Chemistry: Chemical Reactions FAQ

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 Chemical Reactions 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 Chemical Reactions 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 Chemical Reactions typically tested on CIE IGCSE Chemistry papers?
Chemical Reactions 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 Chemical Reactions before exam day.

Start practising in 30 seconds — no card required.

⚡ Start Quiz Free →