Gold is used for Jewellery it won't turn your skin green because it isn't cheap.
1 of 13
What is copper used for?
Copper is used for coins because its not magnetic.
2 of 13
What is aluminium used for?
Used for pans because they conduct heat.
3 of 13
What does native mean?
Native means to be found in its natural element as they are unreactive.
4 of 13
Which metals can be extracted by electrolysis?
Potassium, sodium, calcium, magnesium and aluminium.
5 of 13
Why are these metals extracted by electrolysis?
Metals that are more reactive have to be extracted by electrolysis of molten commpounds.
6 of 13
What is electrolysis?
Electrolysis is the breaking up of a substance using electricity. It requires a liquid to conduct the electricity called the electrolyte. Electrolytes are often metal salt solutions made from the ore or molten metal oxides.
7 of 13
Why can't potassium, sodium, calcium, magnesium and aluminium be extracted by reduction using carbon?
Carbon can only take the oxygen away from metals which are less reactive than carbon itself.
8 of 13
Which metals are extracted by reduction using carbon?
Zinc, iron, tin and copper.
9 of 13
Why do silver, gold and platinum not need to be extracted by reduction using carbon or eelctrolysis?
They don't need to be extracted by reduction using carbon or electrolysis because they are so unreactive.
10 of 13
What is oxidation?
Oxidation is a gain of oxygen.
11 of 13
What is reduction?
Reduction is a loss of oxygen.
12 of 13
Why can iron oxide be reduced by carbon?
Iron oxide can be reduced by carbon because it is below carbon in the reactivity series but you can't extract aluminium because it is higher than carbon.
13 of 13
Other cards in this set
Card 2
Front
What is copper used for?
Back
Copper is used for coins because its not magnetic.
Comments
No comments have yet been made