Testing and preparing common gases

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  • Preparing, collecting and testing common gases
    • Hydrogen
      • Acid + metal => salt+ hydrogen
      • Collection
        • over water
        • UP into a gas jar
          • low density gas
        • into a gas syringe
      • Test
        • "squeaky pop" with a lighted splint
    • Oxygen
      • Decomposition of H2O2 with a catalyst
      • Test
        • Relights a glowing splint
      • Collect
        • over water
        • DOWN into a gas jar
        • into a gas syringe
    • Carbon Dioxide
      • Acid + carbonate => salt + water + CO2
      • Test
        • limewater, clear to cloudy white
      • Collection
        • over water
        • DOWN into a gas jar
        • into a gas jar

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