Topic 3 Flashcards

1
Q

What is complete combustion?

A

Complete combustion occurs when all the hydrocarbons are oxidised and the only product left is carbon dioxide and water
Complete combustion only happen when lots of oxygen is present

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2
Q

What in incomplete combustion?

A

Incomplete combustion occurs when their is not enough oxygen for all the reactants to oxide in this case is forms

  • Carbon Dioxide
  • Carbon Monoxide
  • Carbon
  • Water
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3
Q

What properties should a good fuel have?

A
  • Burn easily
  • Shouldn’t produce ash or smoke
  • Should release a lot of heat energy
  • Should be easy to store and transport
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4
Q

What are alkanes?

A

They are saturated hydrocarbons. This means that all the bonds joining them are single bonds

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5
Q

What are alkenes?

A

They are unsaturated hydrocarbons and have at least one double bond

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6
Q

What is the bromine test?

A

The bromine test is used to find out if a liquid contains a double bond. Bromine is an orange liquid but becomes colourless when mixed with unsaturated molecules

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7
Q

What is cracking?

A

Cracking the process of breaking down long chains of alkanes into shorter more useful chains

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8
Q

What are some properties and uses of poly(ethene)

A

Flexible, cheap, good electrical insulator

Plastic bags, Bottles and clingfilm

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9
Q

What are some properties and uses of poly(propene)

A

Flexible, shatterproof, has a high softening point

Buckets and bowls

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10
Q

What are some properties and uses of Poly(chloroethene) (PVC)?

A

Tough, cheap, long lasting electrical insulator

Window frames, gutters and pipes, wire insulation

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11
Q

What are some properties and uses of PTFE?

A

Tough, slippery, resistant to corrosion, electrical insulator
Non stick coatings, Corrosive containers, Stain proof carpets, wire insulation

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