Bonding 2 Flashcards

1
Q

give 3 properties of graphite

A

high melting/boiling point
can conduct electricity
lubricant/soft

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2
Q

explain why graphite is a lubricant

A

weak intermolecular forces between layers mean layers can slide over each other easily

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3
Q

give 3 properties of graphene

A

strongest material in the world
best conductor in the world
lubricant/ soft

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4
Q

explain why graphene is strong

A

giant covalent structure
strong covalent bonds
lots of energy required to break bonds

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5
Q

explain why graphene can conduct electricity

A

delocalised electrons can move/ carry charge

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6
Q

explain why graphene is a lubricant

A

weak intermolecular forces between layers mean the layers can slide over each other easily

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7
Q

what are the two structures of a fullerene

A

tube like structure = nanotube

cage like structure = bucky ball

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8
Q

what is the equation for a fullerene bucky ball

A

C60

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9
Q

what are the properties of a metal

A

high melting/boiling point
conducts electricity
malleable

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10
Q

explain why metals have high mp/bp

A
  • giant metallic lattice
  • strong electrostatic bonds between positive ions and negative electrons
  • lots of energy required to break bonds
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11
Q

explain why a metal can conduct electricity

A

has delocalised electrons that can move/carry charge

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12
Q

explain why a metal is malleable

A

metal layers can slide over each other

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13
Q

define alloy

A

mixture of metals

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14
Q

explain if an alloy makes a metal less or more malleable

A

less bc the atoms disrupts the layers so they cannot slide over each other as easily

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15
Q

how big is a nanometer

A

1x10^-9

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16
Q

how big is a nanoparticle

A

a few 100 atoms thick, between 1nm and 100nm in size

17
Q

give 2 properties of nanoparticles

A

large SA so react faster than normal particles

used as catalysts

18
Q

give 3 advantages of nanoparticles

A

less material used
less energy used
less fuel to make material