New Chemistry For You Plenary

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Plenary
AQA Topic C1a.2
This PowerPoint file contains the Plenary for
this topic in the AQA specification. Most of
these slides are paired with a corresponding
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Objectives for this topic. Only a limited amount
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course.
Chapter 4,6,7 and 21 AQA Topic C1a.2 Rocks and
metals
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Rocks and metals AQA C1a.2
The more 1. a metal is, the more 2. it is to
extract it from its ore. The ores of metals of
low reactivity can be 3. in air to yield the
metals. Metals of 4. reactivity must be
roasted with another element 5. to remove
oxygen from the metal 6..
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Rocks and metals AQA C1a.2

• The more reactive a metal is, the more difficult
  it is to extract it from its ore.
• The ores of metals of low reactivity can be
  roasted in air to yield the metals.
• Metals of medium reactivity must be roasted with
  another element carbon to remove oxygen from
  the metal oxide.

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Rocks and metals AQA C1a.2

• 1. Who will win this tug of war over oxygen?
• 2. Why?
• Write a word equation for the reaction of iron
  oxide with aluminium.

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Rocks and metals AQA C1a.2

• 1. Who will win this tug of war over oxygen?
• Aluminium
• 2. Why?
• Aluminium is more reactive than iron (so it can
  displace the iron from its oxide)
• Write a word equation for the reaction of iron
  oxide with aluminium.
• iron oxide aluminium ? aluminium oxide iron

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Rocks and metals AQA C1a.2

• 1. What does native mean?
• 2. Give four examples of native metals.
• 3. Write a word equation for the extraction of
  copper from copper(I) sulphide by roasting.

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Rocks and metals AQA C1a.2

• 1. What does native mean?
• An un-reactive metal found as the element
  itself in nature
• 2. Give four examples of native metals.
• Copper, silver, gold and platinum
• Write a word equation for the extraction of
  copper from copper(I) sulphide by roasting.
• copper(I) sulphide oxygen ? copper
• sulphur dioxide

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Rocks and metals AQA C1a.2
1. can be used to extract metals from their 2..
Carbon will displace 3. that are 4. reactive
metals than itself. Carbon is 5. (gains oxygen)
and the metal is reduced (6. oxygen) in this
reaction.
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Rocks and metals AQA C1a.2

• Carbon can be used to extract metals from their
  ores.
• Carbon will displace metals that are less
  reactive metals than itself.
• Carbon is oxidised (gains oxygen) and the metal
  is reduced (loses oxygen) in this reaction.

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Rocks and metals AQA C1a.2
1.
2.
Label this diagram.
3.
4.
5.
6.
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Rocks and metals AQA C1a.2
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Rocks and metals AQA C1a.2
1.
Label this diagram.
2.
3.
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Rocks and metals AQA C1a.2
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Rocks and metals AQA C1a.2

• 1. List four different types of steel.
• 2. How do the different types of steel differ in
  composition?
• 3. What effect does the addition of tungsten to
  steel have?

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Rocks and metals AQA C1a.2

• 1. List four different types of steel.
• Mild, medium, high-carbon and alloy steels
• 2. How do the different types of steel differ in
  composition?
• They have different amounts of carbon and/or
  other metals in them
• 3. What effect does the addition of tungsten to
  steel have?
• Keeps steel hard and tough, even when it gets
  hot

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Rocks and metals AQA C1a.2

• 1. Why cant carbon be used to extract highly
  reactive metals from their ores?
• 2. What are the two stages in the electrolysis of
  the ore?
• 3. Why is this method of extraction expensive?

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Rocks and metals AQA C1a.2

• 1. Why cant carbon be used to extract highly
  reactive metals from their ores?
• Carbon can only displace less reactive metals
  than itself from a compound
• 2. What are the two stages in the electrolysis of
  the ore?
• Melting and passing electricity through it
• 3. Why is this method of extraction expensive?
• Both stages require a lot of energy and this
  costs money to produce

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Rocks and metals AQA C1a.2

• 1. Which group of metals is the most reactive?
• 2. Give three examples of magnetic metal
  elements.
• 3. List common metal properties.

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Rocks and metals AQA C1a.2

• 1. Which group of metals is the most reactive?
• Group 1
• 2. Give three examples of magnetic metal
  elements.
• Cobalt, nickel and iron
• 3. List common metal properties.
• Conductors of heat and electricity sonorous
  ductile malleable lustrous dense high melting
  and boiling points

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Rocks and metals AQA C1a.2
Use this diagram to explain why alloys are
stronger than pure metals.
1.
2.
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Rocks and metals AQA C1a.2
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Rocks and metals AQA C1a.2

• 1. Which elements do all coinage alloys have in
  common?
• 2. Why is copper added to gold jewellery?
• 3. What is solder used for?

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Rocks and metals AQA C1a.2
1. Which elements do all coinage alloys have in
common? Copper and nickel 2. Why is copper added
to gold jewellery? To make the metal harder and
more durable 3. What is solder used for? To join
up parts of an electrical circuit
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Rocks and metals AQA C1a.2

• 1. What is another name for titanium dioxide?
• 2. Write the balanced equation for the extraction
  of titanium from titanium(IV) chloride using
  sodium metal.
• 3. Why is extracting titanium an expensive
  process?

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Rocks and metals AQA C1a.2

• 1. What is another name for titanium dioxide?
• Rutile
• 2. Write the balanced equation for the extraction
  of titanium from titanium(IV) chloride using
  sodium metal.
• TiCl4 4Na ? Ti 4NaCl
• 3. Why is extracting titanium an expensive
  process?
• A more reactive metal (which has been extracted
  by electrolysis) must be used

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Rocks and metals AQA C1a.2

• 1. How much energy is saved in recycling
  aluminium?
• 2. What are the environmental benefits of
  recycling metals?

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Rocks and metals AQA C1a.2

• How much energy is saved in recycling aluminium?
  95
• 2. What are the environmental benefits of
  recycling metals?
• Pollution is reduced from the extraction of
  metals ore supplies are preserved landscapes
  arent damaged due to mining less energy is
  needed for recycling than extraction less
  landfill space is needed

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