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Chemistry Paper 1, Bonding, Gas testing, Salts & Acids, Pure dry salt …
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Gas testing
Chlorine - blow bubbles through limewater, positive result is the limewater turning cloudy
Hydrogen - Burning splint placed where you want to test, you will hear a squeaky pop if hydrogen is present
Oxygen - Glowing splint where you want to test, splint will be relit if oxygen is present
Carbon dioxide - blow bubbles through limewater and if carbon dioxide is present lime water will turn milky white
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