Properties Of Stuff

Question 1

Ionic compounds

Answer 1

Only contain ionic bonds ,form a closely packed regular lattice, very strong electrostatic forces of attraction between oppositely charges ions in all directions

Question 2

Ionic compounds similar properties

Answer 2

High melting point and high boiling point due to strong bonds
Can’t conduct when solid
Cab conduct as liquid as the ions are free to move and carry electrical charges
Can conduct when dissolved in water as ions separates and are free to move in solution meaning there’ll Carry electric charge

Question 3

Properties of simple molecular substances

Answer 3

Contain covalent bonds
Molecules held by very strong covalent bonds
Weak forces of attraction between said molecules
Very low melting and boiling points
Most are gasses or liquids
Don’t conduct electricity

Question 4

Properties of giant covalent structures

Answer 4

All atoms bonded with strong covalent bonds
Very high melting and boiling points as lots of energy is needed to break down the covalent bonds
Don’t contain charges particles so don’t conduct electricity apart from graphite and graphene
Aren’t soluble in water

Question 5

Diamond

Answer 5

Each carbon atom has four covalent bonds
High melting point
Rigid lattice structure makes it hard used to strengthen cutting tools
Dosent conduct electricity as no free electrons or ions

Question 6

Graphite

Answer 6

Each carbon atom makes 3 covalent bonds creating sheets arranged in hexagons
No covalent bonds between layers making layers free to move over one another makes graphite soft and slippery so it’s used as a lubricant
High melting point as bonds in the layers take huge amounts of energy to break
Conducts electricity as only 3 of 4 outer electrons are used in bonds so each atom has one delocalised (free) electron and can move