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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 |