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Structure And Bonding & Organisation Part 1 > Allotropes of Carbon - Structure and Bonding > Flashcards

Allotropes of Carbon - Structure and Bonding Flashcards

1
Q

What is the formula for diamond?

A

C

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2
Q

What is the formula for buckministerfullerene?

A

C₆₀

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3
Q

What is the formula for graphite?

A

C

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4
Q

What is the formula for graphene?

A

C

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5
Q

Diamond, buckministerfullerene, graphite and graphene all have high melting and boiling points. True or False

A

False - buckministerfullerene has a low melting an boiling point

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6
Q

Which 2 allotropes are conductors?

A

Graphite and graphene

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7
Q

Which 2 allotropes are insulators?

A

Buckministerfullerene and diamond

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8
Q

How many covalent bonds does diamond have?

A

4

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9
Q

How many covalent bonds does buckministerfullerene have?

A

90

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10
Q

How many covalent bonds does graphite have?

A

3

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11
Q

How many covalent bonds does graphene have?

A

3

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12
Q

Why does diamond have a high melting and boiling point?

A

It has very strong covalent bonds - needs a lot of energy to break

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13
Q

Why does graphite have a high melting and boiling point?

A

The strong covalent bonds that hold the carbon atoms together in the layers require a lot of energy to break.

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14
Q

Why does graphene have a high melting and boiling point?

A

Strong covalent bonds require lots of energy to break

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15
Q

Why does buckministerfullerene have a low melting and boiling point?

A

There are weak intermolecular forces between molecules that require little energy to break

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16
Q

Describe the strength of diamond

A

Very hard - 4 bonds form a rigid structure

17
Q

Describe the strength of graphite

A

Soft and slippery - layers can slip off easily which is why it’s used in pencils

18
Q

Describe the strength of buckministerfullerene

A

Soft and brittle

19
Q

Describe the strength of graphene

A

Very strong

20
Q

Which 4 of the allotropes of carbon has a low melting and boiling point?

A

Buckministerfullerene

21
Q

Why is graphite soft and slippery?

A

It has a layered structure and the bond is broken easily because there are no covalent bonds and weak intermolecular forces between the layers.

22
Q

Why is graphene very strong?

A

It has very strong covalent bonds which require lots of energy to break - it is also arranged in a giant lattice.

23
Q

Why can graphite be used as a lubricant?

A

It has weak forces between molecules which means layers can slip easily

24
Q

What are fullerenes

A

Allotropes of carbon, made by bending sheets of graphene into hollow structures.

Structure And Bonding & Organisation Part 1 (11 decks)

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