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YouTubeCognito
GCSE Chemistry - Testing for Gases - Hydrogen/Chlorine/Oxygen/CO2 (2026/27 exams)
⭐️ Check out our website https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Test for Chlorine Gas * Using damp blue litmus paper to test for chlorine. * The positive result is the litmus paper being bleached and turning white. 2. Test for Oxygen Gas * Using a glowing splint to test for oxygen. * The positive result is the glowing ...
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