Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.
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Transcript of Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.
![Page 1: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/1.jpg)
Intermediate 1 Unit 2a Metals
1 2 3 4 5 6 7
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![Page 2: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/2.jpg)
Name some metals found uncombined in the Earth’s crust
Gold, silver and copper
![Page 3: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/3.jpg)
Are most metals found combined to other elements or
uncombined?
Combined to
other elements
![Page 4: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/4.jpg)
How is iron extracted from its ore?
Heated with carbon
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Name a metal extracted from its ore using electricity.
Aluminium
![Page 6: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/6.jpg)
Which type of elements are conductors of electricity?
Metals
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Which non-metal element conducts electricity?
Carbon (graphite)
![Page 8: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/8.jpg)
What is an insulator of electricity?
A substance which does not allow electricity to pass
through it
![Page 9: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/9.jpg)
What is an alloy?
A mixture of metals or a mixture of metals with
non-metals.
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Give three examples of an alloy.
Brass, bronze, solder, steel
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What is produced in the reaction of a metal with oxygen?
A metal oxide
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Which gas is produced when a metal reacts with acid?
Hydrogen gas
![Page 13: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/13.jpg)
Name three metals which do not react with dilute acid.
Gold silver and copper
![Page 14: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/14.jpg)
What is the test for hydrogen gas?
Burns with a pop
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Name a metal which reacts with oxygen but does not react with
water. (Use data booklet)
Aluminium, zinc, iron, and those below iron in
the table in the data booklet
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Why is aluminium used for aircraft bodies?
(Use data booklet)
Low density/ not heavy
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What term is used to describe the corrosion of iron?
Rusting
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Name the two conditions needed for rusting.
Water and oxygen
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What can be used to show the extent of the rusting process?
Rust indicator turns blue
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Do acid rain and salt speed up or slow down the rusting process?
Speed it up
![Page 21: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/21.jpg)
Give four examples of surface barriers which can be used to
protect against corrosion.
Painting, greasing, electroplating, galvinising,
tin-plating, plastic coating.
![Page 22: Intermediate 1 Unit 2a Metals 1 23 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d925503460f94a795a0/html5/thumbnails/22.jpg)
Which metal is used to galvanise iron?
Zinc
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How do surface barriers protect against corrosion?
They stop the water and oxygen making contact with the iron
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Which metal is anodised?
Aluminium
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Would iron rust if attached to attaching magnesium (more
reactive metal)?
No
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Would iron rust if a tin coating was scratched?
Yes - tin is less reactive than iron
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Would iron rust if a zinc coating was scratched?
No -zinc is more reactive than iron
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What happens to the oxide layer when aluminium is anodised?
It becomes thicker
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Intermediate 1 Unit 2a
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8 9 10 11 12 13 14
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