5568870
Description
Flashcards by Kate Williams, updated more than 1 year ago
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Created by Kate Williams
over 8 years ago
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| Question | Answer |
| Describe Dynamic Equilibrium (2 marks) | Rate of forwards reaction equals rate of backwards reaction. Concentrations are constant. |
| Name (mostly) soluble salts (7 marks) | Nitrates, Chlorides, Sulfates, Potassiums, sodiums, ammoniums. |
| Name the exceptions to Chloride's solubility (2 marks) | Silver Chloride, Lead Chloride |
| Name the exceptions to Sulfate's solubility (4 marks) | Barium Sulfate, Lead Sulfate, Strontium Sulfate, Silver Sulfate |
| Name the exceptions to Nitrate's solubility (1 mark) | None, not even Lead Nitrate (Lead being insoluble anywhere else) |
| Which salt type is generally insoluble, with two exceptions? (3 marks) | Carbonates, with exception of group one salts and ammonium salts |
| If you add sodium hydroxide to an unknown and it goes brown, what does it contain? (1 mark) | Iron (III), which becomes Iron (III) Hydroxide |
| If you add sodium hydroxide to an unknown and it goes dirty green, what does it contain? (1 mark) | Iron (II), which becomes Iron (II) Hydroxide |
| If you add sodium hydroxide to an unknown and it goes blue, what does it contain? (1 mark) | Copper (II), which becomes Copper (II) Hydroxide |
| If you add silver nitrate to an unknown and it goes white, what does it contain? (1 mark) | Chloride, which becomes Silver Chloride |
| If you add silver nitrate to an unknown and it goes cream, what does it contain? (1 mark) | Bromide, which becomes Silver Bromide |
| If you add silver nitrate to an unknown and it goes pale yellow, what does it contain? (1 mark) | I |
| To distinguish between Silver Halides, you can add Ammonia and observe what for each silver halide? (3 marks) | Silver Chloride dissolves. Silver Bromide partially dissolves. Silver Iodide won't dissolve. |
| Describe the appearance of Halogens at room temperature? (4 marks) | Fluorine - pale yellow gas Chlorine - pale green gas Bromine - volatile red liquid Iodine - shiny grey solid, will sublime to a violet (and highly toxic) vapour upon warming |
| Describe the appearance of Halogens in water? (3 marks) | Chlorine - pale green Bromine - orange Iodine - brown |
| Describe the appearance of Halogens in cyclohexane? (3 marks) | Chlorine - pale green Bromine - orange Iodine - purple |
| Barium flame test result (1 mark) | Apple green |
| Copper (II) flame test result (1 mark) | Blue-green |
| Lithium flame test result (1 mark) | Bright red |
| Sodium flame test result (1 mark) | Yellow |
| Potassium flame test result (1 mark) | Lilac |
| Calcium flame test result (1 mark) | Brick red |
| Radical Initiation reaction needs? (1 mark) | A UV light source |
| Ozone is formed by adding an O radical to? (1 mark) | Oxygen gas, which is diatomic |
| Why are CFCs dangerous? (3 marks) | They catalyse the breakdown of ozone, so it doesn't absorb the harmful UV wavelengths which can cause skin cancer |
| What does an aromatic compound typically contain? (1 mark) | A benzene ring |
| What does an aliphatic compound typically lack? (1 mark) | A benzene ring |
| If you add neutral Iron (III) Chloride solution to an unknown and a purple colour change is observed, what was present in the unknown? | A phenol, or a derivative of a phenol |
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