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Rate of reaction: factors affecting rate
Practice Questions

20 CIE IGCSE Chemistry questions on Rate of reaction: factors affecting rate, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Rate of reaction: factors affecting rate

Question 1 · 1 mark · Difficulty 1/3

A student measures the rate of reaction between marble chips and dilute hydrochloric acid by collecting the gas produced. Which measurement would allow the rate of reaction to be calculated?

  1. The colour change of the reaction mixture over time
  2. The temperature of the acid before the reaction starts
  3. The volume of gas collected at regular time intervals
  4. The mass of marble chips added at the start
Show answer & explanation
✓ Answer: C — The volume of gas collected at regular time intervals
Rate of reaction can be calculated as volume of gas produced divided by time, so measuring volume at regular intervals allows rate to be determined. Colour change is not applicable here as no colour change occurs. The initial temperature is a condition, not a measure of rate. The mass of marble chips affects how long the reaction lasts but alone does not allow rate to be calculated.
Question 2 · 1 mark · Difficulty 1/3

Manganese(IV) oxide is added to hydrogen peroxide solution and speeds up the decomposition of hydrogen peroxide into water and oxygen. At the end of the reaction, the manganese(IV) oxide is recovered unchanged. What is the role of the manganese(IV) oxide?

  1. It acts as a product of the decomposition reaction
  2. It acts as a reactant that is regenerated at the end
  3. It acts as a catalyst for the decomposition reaction
  4. It acts as an inhibitor that slows the decomposition reaction
Show answer & explanation
✓ Answer: C — It acts as a catalyst for the decomposition reaction
Manganese(IV) oxide is a catalyst because it speeds up the reaction and is recovered chemically unchanged at the end. It is not a reactant because reactants are consumed during a reaction. It is not a product as it is not formed by the reaction. An inhibitor would slow the reaction down, not speed it up.
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CIE IGCSE Chemistry: Rate of reaction: factors affecting rate FAQ

How many CIE IGCSE Chemistry questions on Rate of reaction: factors affecting rate are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Rate of reaction: factors affecting rate 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 Rate of reaction: factors affecting rate 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 Rate of reaction: factors affecting rate 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 Rate of reaction: factors affecting rate typically tested on CIE IGCSE Chemistry papers?
Rate of reaction: factors affecting rate 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.

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