🎯 Common Question Types:
- Name the exact flame colour for a given metal ion (1 mark each)
- Describe the flame test method including wire cleaning (3–4 marks)
- Explain why wire must be cleaned between tests (2 marks)
- Explain why blue glass is used for potassium (2 marks)
- Higher: Explain the mechanism (electron excitation and emission) (3 marks)
📝 Key Command Words:
- Describe the method: Give all steps including cleaning
- Identify the metal: Match flame colour to the correct ion
- Explain why: Give scientific reason (electron transitions)
- State limitations: Similar colours, contamination, subjective
⚠️ Common Mistakes to Avoid:
- Vague colour names — say "crimson red" not just "red"
- Missing the cleaning step when describing the method
- Not mentioning HCl for cleaning — water is not enough
- Forgetting that not all metals give visible flame colours
- Confusing calcium (orange-red) with sodium (orange-yellow)
This exam tips covers Exam Tips for Flame Tests within Flame Tests for GCSE Chemistry. Revise Flame Tests in Chemical Analysis for GCSE Chemistry with 22 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 12 of 13 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Practice questions for Flame Tests
Which type of wire is used to carry out a flame test?
Explain why different metal ions produce different colours in flame tests.
Quick recall flashcards
Flame color for sodium ions (Na⁺)?
ORANGE/YELLOW - persistent yellow-orange flame, very intense and bright
What is a flame test?
A test used to identify metal ions by observing the characteristic flame color they produce when heated in a Bunsen burner flame