Oxygen
- Created by: HLeiper
- Created on: 31-03-14 09:33
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- Oxygen
- Atomosphere
- Nitrogen 78%
- CO2 0.04%
- Oxygen 21%
- Argon nearly 1%
- Making Oxygen
- Hydrogen Peroxide decomposes into water and oxygen
- 2H2O2 --> 2H20 + 02
- Manganese (IV) Oxide is the catalyst
- Collect the oxygen over water by: Bubbling the gas into an upside down measuring cylinder filled with water or Using a gas syringe
- Hydrogen Peroxide decomposes into water and oxygen
- Reactions with Air
- Magnesium
- Bright white flame and white powder (Magnesium Oxide) - slightly alkaline
- 2Mg + O2--> 2MgO
- Carbon
- Very strongly heated, orange/yellow flame, produces carbon dioxide - slightly acidic
- C + O --> CO2
- Sulphur
- Pale blue flame, produces sulphur dioxide - acidic
- S + O --> SO2
- Magnesium
- Atomosphere
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