75914
Description
Flashcards by Safiya Caesar, updated more than 1 year ago
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Created by Safiya Caesar
about 12 years ago
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| Question | Answer |
| Ammonia NH3 Colourless pungent smell | Test - hold damp red litmus paper (or UDI) in gas Result- indicator paper turns blue |
| Carbon Dioxide CO2 colourless and oudourless | Test- bubble through limewater (calcium hydroxide solution) Result- white ppt of calcium carbonate formed (solution turns milky) |
| Chlorine Cl2 pale green, choking smell | Test- hold damp litmus paper or UDI in gas Result- indicator bleached white, blue litmus will turn red first then become bleached |
| Hydrogen H2 colourless , odourless | Test- hold a lighted splint in gas Result- hydrogen burns with a squeaky pop |
| Oxygen O2 colourless, odourless | Test- hold a 'glowing' wooden splint in gas Result- the splint re-lights |
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