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9 Cards in this Set
- Front
- Back
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How to test for hydrogen, carbon dioxide, chlorine and oxygen (gases) |
Hydrogen - insert burning splint, it will produce a pop sound Oxygen - insert glowing splint, the splint will relight Carbon Dioxide - Draw gas into pipet, bubble gas through limewater and repeat, limewater will go cloudy Chlorine - put litmus paper, will turn white |
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Properties of Hydrocarbons |
Viscosity (thickness) - more chains more viscous Flamability - less chains more flammable Boiling Point - more chains higher boiling point |
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Fractional distillation of crude oil |
Heat crude oil up very high, crude oil boils so it evaporates and turns to vapour. The gas is then fed into a fractional distillation column and rises. Vapour condenses and becomes liquid when they reach theyre boiling point, Liquid removed. Very short chains and very long chains are removed straught away. |
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Cracking |
Catalytic Cracking - Using a catalyst and high temperature Steam Cracking - Using steam and high temperature |
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How to test for alkenes |
Put alkene and bromine water toegether and shake, if the bromine water turns colourless its present |
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How to obtain Potable water |
Find source of fresh water, pass water through filter bed and into streliser (chlorine, ozone, uv light) Sea water is turned into potable by Desalination -distillation or reverse osmosis |
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Removing waste water |
Sewage is screened by passing through mesh, water settles in large sedimentation tanks producing a liquid effluent and sludge which sinks. Sludge is removed and digested by anaerobic bacteria. Lqiquid effluent has air bubbled throguh it. Aerobic bacteria digest bad stuff. Then released. |
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Methods of extracting metals |
Phytomining, plants are grown that contain metal compound. Plant is havrested and burned and ash has has concentrauon of metal Bio leaching- bacteria are mxied with ore. produce leachate which has metal compound |
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Methods of extracting metals |
Phytomining, plants are grown that contain metal compound. Plant is havrested and burned and ash has has concentrauon of metal Bio leaching- bacteria are mxied with ore. produce leachate which has metal compound |
