Metal compounds - Unit one
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| What is the breaking down of compounds through heating? | Thermal Decomposition
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| What are the 2 main rules of thermal decomposition? | Mass is conserved, Changes are permenant
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| Which compounds are always soluble? | Soduim, Pottassuim, ammonuim, nitrates
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| Which chlorine samples are not soluble? | Lead and Silver
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| Which sulphates are not soluble? | Lead and Baruim
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| Which compounds are insoluble? | Oxides, hydroxides and carbonates
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| What is a precipitate? | Ionic solid made from 2 ionic aqueous solutions
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| What compounds make a blue precipitate? | Copper and hydroxide ions
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| Which ions make a green precipitate? | Iron 2+ and Hydroxide ions
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| Which ions make a brown precipitate? | Iron 3+ and hydroxide ions
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| What compounds are used in the thermit reaction? | Aliminuim and iron 3 oxide
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| What is produced in the thermit reaction? | Iron
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| What is the thermit reaction used for? | Railway repairs
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| What is used to prepare Nickel Sulphate? | Nickel Carbonate and sulphuric acid
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| What waste produts are formed when producing nickel sulphate? | Carbon dioxide and water
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| What is the procedure for preparation of nickel sulphate? | Dissolved nickel carbonate in sulphuric acid, until slight excess. Filter to remove excess. Boil until half mixture is evaporated. Transfer to petri dish to crystalise
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| What is Mohrs Salt? | Ammonium iron 3 sulphate
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| What compounds are needed to produce Mohrs salt? | Ammonuim sulphate and iron sulphate
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| What is the procedure for preparation of Mohrs Salt? | Add iron filings to boiling sulphuric acid, place ammonia in beaker with dilute sulphuric acid, mix two solutions, boil to half volume, leave to crystallise
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| Which elements generally hold a +1 ionic charge? | Group 1, hydrogen, ammonium, silver
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| Which ions have the charge +2? | Group 2, Colbalt, Copper and iron
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| Which ions have the charge 3+? | Group 3, Iron
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| Which ions have the charge -2? | Group 6, sulphate, carbonate
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| Which ions have the charge -1? | Group 7, hydroxide, Nitrates
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| What volume is one mole of gas? | 24 dm3
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