IGCSEChemistryOxford AQARevision NotesChemical AnalysisIdentification of Common GasesOxygen

Oxygen (Oxford AQA IGCSE Chemistry)

Revision Note

Author

Alexandra Brennan

Expertise

Chemistry

Test for Oxygen

The test for oxygen consists of placing a glowing splint inside a test tube of gas
If the gas is oxygen, the splint will relight

Testing for oxygen gas

The diagram shows a glowing splint being added to a test-tube of oxygen, and the spling relights to confirm the presence of oxygen — **A glowing splint will relight in the presence of oxygen**

Exam Tip

Sometimes the splint does not relight, but it glows very brightly, which is also a positive result. In an exam, however, it is best to state it relights the glowing splint.

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Author: Alexandra Brennan

Alex studied Biochemistry at Newcastle University before embarking upon a career in teaching. With nearly 10 years of teaching experience, Alex has had several roles including Chemistry/Science Teacher, Head of Science and Examiner for AQA and Edexcel. Alex’s passion for creating engaging content that enables students to succeed in exams drove her to pursue a career outside of the classroom at SME.