Topic 2 Flashcards
Ions are made when
Electrons are transfered
How is an ionic bond formed
Metal and non metal react
What type of structure do ionic compounds have
Regular lattice structure
Properties of ionic compounds
High melting and boiling points
Can’t conduct as solids but can at liquid and gass
Dissolve easily in water
How are covalent bonds formed
Non metals bonding
In covalent bonds the non metals share
Electrons in the outer shell
What are polymers
Long chain of repeating units
How are atoms in a polymer joined
Covalent bonds
What structures do covalent bonds hold together
Polymers
Molecular substances
Giant covalent structure
3 allotropes of carbon that are also giant covalent structures
Diamond
Graphite
Graphene
What are fullerenes
Molecules of carbon shaped like hollow balls
What can fullerenes be used for
Deliver drugs to body
Lubricants
What does metallic bonding always involve
Delocalised electron
How strong forces between particles are depend on
Material
Temperature
Pressure
Surface area to volume ration =
Surface area ÷ volume
