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Hydrogen: listen for a squeaky pop

Hydrogen: listen for a squeaky pop

A gas test identifies a gas by a characteristic observation. In an exam answer, state both what you do and what you observe.

4.2.1 Tests to identify gases Lesson

  1. GCSE
  2. /Chemistry
  3. /4.2.1 Tests to identify gases

Step-by-step lessons on OCR GCSE Chemistry 4.2.1 Tests to identify gases. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons