Forms Of Carbon

Front 1

What is a giant covalent structure (or macromolecule)

Back 1

A giant covalent structure is a lattice made up of a 3D network of covalently bonded atoms

Front 2

Do covalent structures have high or low melting points

Back 2

All giant covalent structures such as graphite and silicon dioxide have a high melting points

Front 3

What’s the reason and use of graphite having a high melting point?

Back 3

Because of the strong covalent bonding throughout the layers of carbon atoms; a lot of energy is needed to overcome these bonds and it’s use is crucibles

Front 4

What’s the reason and use of graphite having a heat insulator?

Back 4

Heat is not conducted at right angles through the graphite layers, heat is rather transferred within the layers it’s use being a heatshield of space aircraft

Front 5

What’s the reason and use of graphite being soft

Back 5

The intermolecular forces between the layers of carbon atoms are weak. The layers of graphite can slide over each other when a force is applied it’s use is for pencils

Front 6

What’s the reason and use of graphite being a good electrical conductor?

Back 6

The Delocalized Electrons can move along the layers when a voltage is applied, it’s use is in electrodes

Front 7

In diamond how many covalent bond does each carbon form

Back 7

In diamond each carbon atom forms 4 covalent bonds with other carbon atoms

Front 8

What shape arrangement of carbon atoms in diamonds like

Back 8

The carbon atoms are arranged in a tetrahedral shape around each other

Front 9

The properties of diamond is related to its structure name a few

Back 9

1.High melting points

2.hard

3.does not conduct electricity

4.diamond is a very good heat conductor

Front 10

How does the property of a diamond having a high melting point relate to its structure ?

Back 10

Because of the strong covalent bonding throughout the whole structure a lot of energy is needed to break the strong bond and separates the atoms

Front 11

How does the property of a diamond being hard relate to its structure ?

Back 11

Due to the strong covalent bond throughout the 3-D lattice of a diamond

Front 12

How does the property of a diamond not conducting electricity relate to its structure ?

Back 12

Each of the four outer electrons on every carbon atom is involved in bonding this means that there are no free electrons available to carry the electric current

Front 13

How does the property of a diamond being a very good heat conductor relate to its structure ?

Back 13

Because of its 3-D covalent structure unlike graphite, heat conductivity can occur along the bonded carbon atoms in all directions

Front 14

What is graphene

Back 14

Graphene is a single isolated layer of graphite made up of a hexagonal sheet of carbons

Front 15

What’s the use of graphene being unreactive

Back 15

oxidation resistant layers around objects such as spacecraft

Front 16

What’s the use of graphene being unreactive

Back 16

oxidation resistant layers around objects such as spacecraft

Front 17

What’s the use of graphene being strong for its mass & flexible

Back 17

Bulletproof clothing

Front 18

What’s the use of graphene being unreactive

Back 18

oxidation resistant layers around objects such as spacecraft

Front 19

What’s the use of graphene being strong for its mass & flexible

Back 19

Bulletproof clothing

Front 20

What’s the use of graphene being good conductor of heat & electricity

Back 20

Flexible display & data storage

Front 21

What’s the use of graphene being unreactive

Back 21

oxidation resistant layers around objects such as spacecraft

Front 22

What’s the use of graphene being strong for its mass & flexible

Back 22

Bulletproof clothing

Front 23

What’s the use of graphene being good conductor of heat & electricity

Back 23

Flexible display & data storage

Front 24

What’s the use of graphene being thin & transparent

Back 24

Transparent electrodes in solar cells

Front 25

What’s the use of graphene being unreactive

Back 25

oxidation resistant layers around objects such as spacecraft

Front 26

What’s the use of graphene being strong for its mass & flexible

Back 26

Bulletproof clothing

Front 27

What’s the use of graphene being good conductor of heat & electricity

Back 27

Flexible display & data storage

Front 28

What’s the use of graphene being thin & transparent

Back 28

Transparent electrodes in solar cells

Front 29

What’s the use of graphene reducing friction between surfaces

Back 29

Non-stick coating of frying pans

Front 30

What’s the use of graphene being unreactive

Back 30

oxidation resistant layers around objects such as spacecraft

Front 31

What’s the use of graphene being good conductor of heat & electricity

Back 31

Flexible display & data storage

Front 32

What’s the use of graphene reducing friction between surfaces

Back 32

Non-stick coating of frying pans

Front 33

What’s the use of graphene being flexible and durable

Back 33

Nanotubes