Revision pg 52

what are metal ores?
it is a rock which contains enough metal to make it worthwhile to extract the metal from it
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what has to happen to the metal for the ore to be extracted?
a chemical reaction
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aluminium ore is called a?
bauxite
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why does the economics of t metal extraction change over time?
because the price of metal can decrease or increase according to how much it gets extracted to use for materials and due to the technology improving rapidly
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what are they two methods used to get the ore chemically?
reduction and electrolysis
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why do some ores have to be concentrated before the metal is extracted?
so that it gets rid of the unwanted rocky material
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what other things can electrolysis do?
it can purify a extracted metal
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what is used in reduction?
carbon
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what is removed when the ore is reduced?
oxygen
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what does the reactivity series do?
it determines whether or not a metal can be extracted by reduction using carbon
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if metals are higher than carbon then what does this mean?
it means that the metal has to be extracted by electrolysis
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if metals are lower than carbon then what does this mean
it mean that the metal has to be extracted by reduction
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what's the order of the reactivity series?
the order is: potassium (k), sodium (na), calcium (ca), magnesium (mg), aluminium (al), CARBON (C), zinc (zn) ,iron (fe), tin (sn) and copper (cu)
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complete the word equation: iron oxide + carbon-
iron + carbon dioxide
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Other cards in this set

Card 2

Front

what has to happen to the metal for the ore to be extracted?

Back

a chemical reaction

Card 3

Front

aluminium ore is called a?

Back

Preview of the front of card 3

Card 4

Front

why does the economics of t metal extraction change over time?

Back

Preview of the front of card 4

Card 5

Front

what are they two methods used to get the ore chemically?

Back

Preview of the front of card 5
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Comments

Joseph101 - Team GR

Good but needs some spell checking, capitalisation and a little more detail such as: why is carbon used in reduction? 

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