AQA GCSE Chemistry

Revision Notes

8.2.1 Test for Hydrogen

Squeaky Pop Test

  • The test for hydrogen consists of holding a burning splint held at the open end of a test tube of gas
  • If the gas is hydrogen it burns with a loud “squeaky pop” which is the result of the rapid combustion of hydrogen with oxygen to produce water
  • Be sure not to insert the splint right into the tube, just at the mouth, as the gas needs air to burn

& GCSE Chemistry revision notes

Diagram showing the test for hydrogen gas

Exam Tip

It is easy to confuse the tests for hydrogen and oxygen. Try to remember that a ligHted splint has an H for Hydrogen, while a glOwing splint has an O for Oxygen.

Author: Francesca

Fran has taught A level Chemistry in the UK for over 10 years. As head of science, she used her passion for education to drive improvement for staff and students, supporting them to achieve their full potential. Fran has also co-written science textbooks and worked as an examiner for UK exam boards.
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