Structure

Question 1

Properties of ionic properties

Answer 1

High melting point/boiling point
Conducts when molten or in solution
Soluble in water

Question 2

High melting and boiling points

Answer 2

A lot of energy is required to break the strong ionic bonds between the ions in the giant structure
(Electrostatic attraction from charged ions)

Question 3

Conducts when molten or in a solution

Answer 3

Ions are free to move and carry charge when compound is a liquid or in a solution but not when solid

Question 4

Soluble in water

Question 5

Properties of molecular covalent properties

Answer 5

Low meting and boiling points
Doesn’t conduct electricity
Low solubility in water (good in petrol)

Question 6

Low melting/boiling points

Answer 6

Little energy required to break weak van der waal fore’s between the molecules
(Strong covalent bonds do not break)

Question 7

Don’t conduct electricity

Answer 7

The molecule are neutral and there are no fee electrons or ions to move and carry charge

Question 8

Low solubility in water (good in solvents)

Question 9

Giant molecular properties

Answer 9

All very high melting points
All insoluble in water

Question 10

Very high meting points

Answer 10

Lots of energy required to break the strong covalent bonds between the atoms in the giant structure

Question 11

All insoluble in water

Question 12

Diamond properties

Answer 12

Very High melting point
Insoluble in water
Doesn’t duct electricity
Hard
Used for cutting tools and drill bits

Question 13

Doesn’t conduct electricity

Answer 13

All outer electrons are bonded. No free ions or electrons to move and carry charge

Question 14

Hard

Answer 14

Due to 3D tetrahedral structure with strong covalent bond throughout

Question 15

Graphite

Answer 15

Very high melting point
Insoluble in water
Does conduct electricity
Soft
Used for lubricants for machinery and in pencil leds (layers slide over each other)

Question 16

Conducts

Answer 16

One outer electron per atom is unbonded. This electron is delocalised and free to move and carry charge

Question 17

Soft

Answer 17

The layers of carbon atoms can slide over each other as the weak van der waals forces between the layers are easy to break

Question 18

Graphene

Answer 18

Very high melting point
Insoluble in water
Amazing conductor
Very strong
Used for solar cells and batteries of the future

Question 19

Amazing conductor

Answer 19

Is a better conductor than graphite as the 2D structure offers little resistance to the flow of electrons

Question 20

Very strong

Answer 20

Due to the strong covalent bonds within the layer structure

Question 21

Properties of metal and alloy

Answer 21

Usually high melting and boiling points
Conducts electricity
Malleable and ductile

Question 22

Usually high melting and boiling points

Answer 22

A lot of energy is required to break the strong metallic bonds between the positive ion and delocalised electrons in the giant structure

Question 23

Conduct electricity

Answer 23

Contains delocalised electrons which move and carry charge

Question 24

malleable and ductile

Answer 24

The layers of ions can slide over each other without breaking metallic bond as the delocalised electrons still attract the ions