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Chemical Energetics
Practice Questions

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

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Try 2 sample questions on Chemical Energetics

Question 1 · 1 mark · Difficulty 1/3

Which statement correctly describes bond energy?

  1. D: The energy needed to convert one mole of a liquid into a gas
  2. A: The energy released when one mole of bonds is formed in a gaseous molecule
  3. B: The energy required to break one mole of a specific covalent bond in gaseous molecules
  4. C: The total energy stored in all bonds of one mole of a compound
Show answer & explanation
✓ Answer: C — B: The energy required to break one mole of a specific covalent bond in gaseous molecules
Bond energy is defined as the energy required to break one mole of a specific covalent bond in gaseous molecules under standard conditions. It is always endothermic (positive) since breaking bonds requires energy input. Students often confuse bond breaking with bond forming, which releases energy.
Question 2 · 1 mark · Difficulty 1/3

On an energy level diagram, what does the activation energy represent?

  1. The minimum energy required for a reaction to occur
  2. The difference in energy between reactants and products
  3. The energy stored in the bonds of the products
  4. The total energy released by the reaction
Show answer & explanation
✓ Answer: A — The minimum energy required for a reaction to occur
Award 1 mark for identifying activation energy as the minimum energy required for a reaction to occur. D is incorrect — this describes the enthalpy change for an exothermic reaction. B is incorrect — this is the overall enthalpy change (ΔH). C is incorrect — this is the total bond energy of products, not activation energy.
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20 questions · 25 min · free

CIE IGCSE Chemistry: Chemical Energetics 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 Energetics 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 Energetics 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 Energetics typically tested on CIE IGCSE Chemistry papers?
Chemical Energetics 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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