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HomeCXC CSEC ChemistryCollision Theory and Activation Energy
CXC · CSEC · Chemistry

Collision Theory and Activation Energy
Practice Questions

20 CXC CSEC Chemistry questions on Collision Theory and Activation Energy, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Collision Theory and Activation Energy

Question 1 · 1 mark · Difficulty 1/3

In the bauxite industry in Jamaica, aluminium hydroxide is heated to produce aluminium oxide. Powdered aluminium hydroxide reacts faster than lumps. Which factor affecting reaction rate is being demonstrated?

  1. Temperature
  2. Concentration
  3. Surface area
  4. Catalyst
Show answer & explanation
✓ Answer: CSurface area
Award 1 mark for surface area. Powdered material has greater surface area than lumps, allowing more frequent collisions between reactant particles and heat/oxygen. A is incorrect — temperature is not being varied. B is incorrect — concentration applies to solutions. D is incorrect — no catalyst is mentioned.
Question 2 · 1 mark · Difficulty 2/3

A student in a Barbados laboratory investigated the reaction between dilute hydrochloric acid and marble chips at different temperatures. She observed that the reaction was faster at higher temperatures. According to collision theory, which of the following BEST explains this observation?

  1. At higher temperatures, particles move faster and collide more frequently with greater energy
  2. At higher temperatures, the concentration of the acid increases
  3. At higher temperatures, the marble chips become more soluble
  4. At higher temperatures, the activation energy of the reaction decreases
Show answer & explanation
✓ Answer: AAt higher temperatures, particles move faster and collide more frequently with greater energy
Award 1 mark for recognizing that higher temperature increases both collision frequency and collision energy. B is incorrect — temperature does not change concentration. C is incorrect — solubility is not the primary factor affecting reaction rate in this context. D is incorrect — activation energy is a fixed value for a given reaction and does not change with temperature.
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20 questions · 25 min · free

CXC CSEC Chemistry: Collision Theory and Activation Energy FAQ

How many CXC CSEC Chemistry questions on Collision Theory and Activation Energy are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Collision Theory and Activation Energy for CXC CSEC 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 CXC 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 CXC CSEC 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 Collision Theory and Activation Energy practice with other Chemistry topics or even switch to a totally different CXC 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 Collision Theory and Activation Energy questions aligned to the official CXC CSEC Chemistry syllabus?
Every question is written against the published CXC CSEC Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC 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 CXC.
How is Collision Theory and Activation Energy typically tested on CXC CSEC Chemistry papers?
Collision Theory and Activation Energy appears across multiple question types on real CXC CSEC 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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