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metals and their use
| Question | Answer |
|---|---|
| how is iron extracted | reduction |
| what is reduction | heating metal with carbon to remove oxygen |
| what is an alloy | 2 or more metallic elements |
| name 3 alloys | brass, steel and bronze |
| what makes up brass | zinc and cooper |
| what makes up steel | iron and carbon |
| what makes up bronze | copper and tin |
| 5 transition metals | zinc,, chromium, iron, gold,silver |
| properties of transition metals | good conductors, stong and malleable |
| malleable meaning | can be shaped. |
| properties of aluminium and its uses | low density, good conductor of electricity, overhead cables and aircrafts |
| properties and uses of titanium | low density, resists corrosion, pans and vechiles |
| aluminum extractions | electrolysis |
| titanuim extraction | heated with chlorine, then purifies then displaced by magnesium |
| smelting | copper ore is heated in a blast furnace |
| displacement | more reactive metal 'pushes out' a less reactive metal |
| bioleaching | extraction of metals from their ores through the use of living organisms |
| phytomining | extraction of copper using plant |
| properties of steel | doesn't go rusty |
| properties of high steel | hard and strong |
| properties of low steel | malleable |
| uses of stainless steel | cutlery and surgical instruments |
| uses of low steel | car body panels and food cans |
| why doesn't steel rust | chromiums |
| steel is an alloy of | iron and carbon |