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HomeAQA GCSE ChemistryRequired practical: tests for gases, ions and water
AQA · GCSE · Chemistry

Required practical: tests for gases, ions and water
Practice Questions

15 AQA GCSE Chemistry questions on Required practical: tests for gases, ions and water, 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 Required practical: tests for gases, ions and water.

Try 2 sample questions on Required practical: tests for gases, ions and water

Question 1 · 1 mark · Difficulty 2/3

Anhydrous copper sulfate is used to test for water. In the presence of water it turns:

  1. From white to blue
  2. From blue to white
  3. From green to red
  4. Colourless
Show answer & explanation
✓ Answer: AFrom white to blue
White anhydrous copper sulfate turns blue when water is added — a chemical test for the presence of water.
Question 2 · 1 mark · Difficulty 2/3

Cobalt chloride paper is used to test for water; it turns:

  1. From blue to pink
  2. From pink to blue
  3. From white to black
  4. Colourless
Show answer & explanation
✓ Answer: AFrom blue to pink
Blue cobalt chloride paper turns pink in the presence of water.
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20 questions · 25 min · free

AQA GCSE Chemistry: Required practical: tests for gases, ions and water FAQ

How many AQA GCSE Chemistry questions on Required practical: tests for gases, ions and water are there on Kramizo?
Kramizo currently has 15 exam-board-aligned practice questions on Required practical: tests for gases, ions and water for AQA GCSE 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 AQA 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 AQA 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 Required practical: tests for gases, ions and water practice with other Chemistry topics or even switch to a totally different AQA 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 Required practical: tests for gases, ions and water questions aligned to the official AQA GCSE Chemistry syllabus?
Every question is written against the published AQA 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 AQA 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 AQA.
How is Required practical: tests for gases, ions and water typically tested on AQA GCSE Chemistry papers?
Required practical: tests for gases, ions and water appears across multiple question types on real AQA 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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