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HomeCXC CSEC ChemistryWriting and Balancing Chemical Equations
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Writing and Balancing Chemical Equations
Practice Questions

20 CXC CSEC Chemistry questions on Writing and Balancing Chemical Equations, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Writing and Balancing Chemical Equations.

Try 2 sample questions on Writing and Balancing Chemical Equations

Question 1 · 1 mark · Difficulty 1/3

In the sugar cane processing industry in Trinidad, calcium hydroxide (slaked lime) is added to cane juice in a reaction that can be represented by a chemical equation. Which of the following is the correct formula for calcium hydroxide?

  1. CaOH
  2. Ca(OH)₂
  3. CaO₂H₂
  4. Ca₂OH
Show answer & explanation
✓ Answer: BCa(OH)₂
Award 1 mark for identifying the correct formula showing calcium with two hydroxide groups. A is incorrect — it shows only one hydroxide group and is not charge-balanced. C is incorrect — this arrangement does not represent the ionic compound correctly. D is incorrect — this would suggest two calcium atoms per hydroxide group, which is not the correct ratio.
Question 2 · 1 mark · Difficulty 1/3

A balanced chemical equation must show:

  1. equal masses of reactants and products
  2. equal numbers of atoms of each element on both sides
  3. equal numbers of molecules on both sides
  4. equal volumes of gases on both sides
Show answer & explanation
✓ Answer: Bequal numbers of atoms of each element on both sides
Award 1 mark for stating the law of conservation of mass principle. A is incorrect — while total mass is conserved, the equation shows atom balance, not mass directly. C is incorrect — molecules need not be equal in number. D is incorrect — volumes are not necessarily equal and this only applies to gases under specific conditions.
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20 questions · 25 min · free

CXC CSEC Chemistry: Writing and Balancing Chemical Equations FAQ

How many CXC CSEC Chemistry questions on Writing and Balancing Chemical Equations are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Writing and Balancing Chemical Equations 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 Writing and Balancing Chemical Equations 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 Writing and Balancing Chemical Equations 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 Writing and Balancing Chemical Equations typically tested on CXC CSEC Chemistry papers?
Writing and Balancing Chemical Equations 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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