Please enable JavaScript.
Coggle requires JavaScript to display documents.
c2.1 structure and bonding (covalent (Involves non-metals, share electrons…
c2.1 structure and bonding
covalent
Involves non-metals
share electrons
no irons so no charge
the number needed to gain is shared
giant covalent
diamonds/ graphite/ silica
diamond
pure carbon
each carbon has 4 covalent bonds
graphite
pure carbon
in hexiagon shape
3 covalent bonds
1 delocalised/ free electron that moves between layers
allows flow of electricity
held together in giant lattice of atoms with covalent bonds
Ionic
between metal and non metal
plus charge - lost electron
minus charge - negative
transfer of electrons
simple covalent
has strong covalent bonds with weak intermalecular bonds
intermalecular bond causes low boiling and melting points
does no conduct electricity
ionic substances
rows of alternating positive and negative irons
held together in a lattice by electrostatic forces
high boiling point and melting point because of electrostatic forces
can conduct electricity
metalic
between metals
rows of positive metal irons surrounded by delocalised electrons
free electrons can move through materials
can conduct electricity
metalic bonding
atoms destort the layers
cant slide over eachother
smart alloy
nitinal used for braces
goes back to original shape when heated
mixture of metals in different sizes