C1.3 - Metals And Their Uses Flashcards

1
Q

What type of reaction occurs in the blast furnace?

A

Reduction.

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2
Q

How can metals more reactive than carbon be extracted?

A

Electrolysis.

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3
Q

What is the downside of electrolysis?

A

It uses a lot of energy and therefore it is expensive.

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4
Q

What percentage of iron is there in iron obtained from the blast furnace?

A

96%.

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5
Q

Electrolysis can be used to… (2)

A
  1. Purify metals.

2. Extract metals.

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6
Q

What is phytomining?

A

Using plants to absorb compounds, and then burning them to produce an ash containing copper.

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7
Q

What is bioleaching?

A

Using bacteria to produce a leachate solution containing copper.

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8
Q

Why are aluminium and titanium useful? (4)

A
  1. Non-corrosive.
  2. Titanium - high tensile strength.
  3. Low density.
  4. Aluminium - forms hard, strong alloys.
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9
Q

Why should we recycle metals? (4)

A
  1. Reduces pollution.
  2. Conserves non-renewable sources.
  3. Reduces the amount of waste sent to landfill sites.
  4. Saves energy and therefore money.
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10
Q

Low carbon steel is ___ and used as ___.

A

Soft/easily-shaped, car bodies.

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11
Q

High carbon steel is ___ and used as ___.

A

Hard, blades for cutting tools/bridges.

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12
Q

Stainless steel is ___ and used as ___.

A

Corrosive-resistant, cutlery/containers for corrosive substances.

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13
Q

What are the properties of transition metals? (5)

A
  1. High melting points.
  2. Strong.
  3. High density.
  4. Low reactivity.
  5. High boiling points.
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14
Q

What are the properties of most metals? (3)

A
  1. Strong.
  2. Good conductors of heat.
  3. Good conductors of electricity.
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15
Q

What does a metal have to be in order for it to be extracted in the blast furnace?

A

Less reactive than carbon.

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