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Edexcel · GCSE · Chemistry

Chemical Changes
Practice Questions

18 Edexcel GCSE Chemistry questions on Chemical Changes, 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 Chemical Changes.

Try 2 sample questions on Chemical Changes

Question 1 · 1 mark · Difficulty 1/3

What is produced when acid reacts with metal?

  1. Metal oxide + water
  2. Salt + hydrogen
  3. Salt + water
  4. Metal hydroxide
Show answer & explanation
✓ Answer: BSalt + hydrogen
Acid + metal → salt + hydrogen. Example: Mg + 2HCl → MgCl₂ + H₂. Test for H₂: lit splint gives a squeaky pop.
Question 2 · 1 mark · Difficulty 1/3

What is the test for hydrogen gas?

  1. Turns limewater milky
  2. A lit splint produces a squeaky pop
  3. Relights a glowing splint
  4. Turns damp litmus paper white
Show answer & explanation
✓ Answer: BA lit splint produces a squeaky pop
Hold a lit splint at the mouth of the test tube. If hydrogen is present, it burns with a squeaky pop sound.
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20 questions · 25 min · free

Edexcel GCSE Chemistry: Chemical Changes FAQ

Is Kramizo free for Edexcel GCSE 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 Changes practice with other Chemistry topics or even switch to a totally different Edexcel 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 Changes questions aligned to the official Edexcel GCSE Chemistry syllabus?
Every question is written against the published Edexcel GCSE Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real Edexcel 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 Edexcel.
How is Chemical Changes typically tested on Edexcel GCSE Chemistry papers?
Chemical Changes appears across multiple question types on real Edexcel GCSE 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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