This exam tips covers Exam Tips for the Reactivity Series within The Reactivity Series for GCSE Chemistry. Revise The Reactivity Series in Chemical Changes for GCSE Chemistry with 28 exam-style questions and 20 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 10 of 12 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
💡 Exam Tips for the Reactivity Series
🎯 Common Question Types:
- Predict whether a displacement reaction occurs (1-2 marks)
- Explain why a metal is more or less reactive than another (3-4 marks)
- Justify the extraction method for a given metal (2-3 marks)
- Write balanced equations for reactions with water or acid (2-3 marks)
- Describe observations when a reactive metal is added to water (2 marks)
📝 Key Command Words:
- Explain: Reference electron structure — shells, distance, shielding, attraction
- Predict: Compare positions in the reactivity series; state whether reaction occurs
- Describe observations: State what you SEE, HEAR, or FEEL — not just what happens chemically
- Justify: Give the reason based on the reactivity series position
⚠️ Common Mistakes to Avoid:
- Confusing aluminium's apparent unreactivity with its true position (Al is above Zn!)
- Saying gold is reactive because it is valuable — it is valuable because it is unreactive
- Forgetting the two reference points: carbon and hydrogen in the series
- Not including state symbols in equations for water reactions
- Writing incomplete "explain reactivity" answers — must mention ALL four factors
Practice questions for The Reactivity Series
Which of the following shows metals listed in order from MOST reactive to LEAST reactive?
Iron filings are added to copper sulfate solution. Explain what happens, including what is observed and why the reaction occurs.
Quick recall flashcards
How do you test for hydrogen gas?
Hold a lighted splint near the gas — makes a 'squeaky pop' sound
General equation for metal + acid
Metal + Acid → Salt + Hydrogen