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Chemistry > Metals > Flashcards

Metals Flashcards

0
Q

What is the reducing agent in the blast furnace?

A

Carbon monoxide

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1
Q

In refining copper, the ______ is impure and the ______ is pure.

A
  1. Anode

2. Cathode

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2
Q

What is stainless steel composed of?

A

70% iron, 20% chromium, 10% nickel

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3
Q

State the reactions that take place inside a blast furnace (before the removal of impurities).

A

Carbon + oxygen –> carbon dioxide
Carbon + carbon dioxide –> carbon monoxide
Hematite + carbon monoxide –> iron + carbon dioxide

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4
Q

What is the name for zinc ore and what is it predominantly made up of?

A
  1. Zinc blende

2. Zinc sulphide

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5
Q

What is mild steel composed of?

A

99.5% iron, 0.5% carbon

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6
Q 
Transition elements:
Form \_\_\_\_\_\_\_ compounds
Act as \_\_\_\_\_\_\_\_\_\_\_
Relatively \_\_\_\_\_\_ densities
Relatively \_\_\_\_\_\_ melting points
A
  1. Coloured
  2. Catalysts
  3. High
  4. High
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7
Q

Group 7 metals:
______ non metals
Melting points ______ down the group
Colour becomes ______ down the group

A
  1. Diatomic
  2. Increase
  3. Darker
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8
Q

Order the reactivity of:

Zinc, potassium, calcium, hydrogen, copper, carbon, aluminium. Magnesium, iron, sodium

A
  1. Potassium
  2. Sodium
  3. Calcium
  4. Magnesium
  5. Aluminium
  6. Carbon
  7. Zinc
  8. Iron
  9. Hydrogen
  10. Copper
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9
Q

What is the activity of a metal based on?

A

It’s tendency to form an ion

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10
Q

What is the name for aluminium ore and what is it predominantly made up of?

A
  1. Bauxite

2. Aluminium oxide

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11
Q

State the 2 steps for the extraction of zinc.

A
  1. Roasted in air - zinc blende + oxygen –> zinc oxide + sulfur dioxide
  2. Separated using electrolysis in a furnace - zinc oxide + carbon monoxide –> zinc + carbon dioxide
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12
Q

What is the name for iron ore and waht is it predominantly made up of?

A
  1. Hematite

2. Iron oxide (Fe2O3)

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13
Q

List the 4 things that go into a blast furnace in the extraction of iron from its ore.

A
  1. Hematite
  2. Carbon
  3. Limestone
  4. Ht air
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14
Q

What is slag?

A

Calcium silicate

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15
Q

What are the 2 reactions that take place to remove sand from iron?

A

Limestone –> calcium oxide + carbon dioxide

Calcium oxide + sand –> calcium silicate

16
Q

If elements are above carbon in the reactivity series, what can they do?

A

They cannot be reduced from their ore by carbon.

17
Q

If elements are below carbon in the reactivity series, what can they do?

A

They can be reduced from their ore by carbon.

18
Q

If elements are below hydrogen in the reactivity series, what will they do?

A

They will not react with acid.

19
Q

If elements are above hydrogen in the reactivity series, what will they do?

A

React with an acid.

Chemistry (7 decks)

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