Categorise these substances according to their crystal lattices when in solid form:
Ne
LiOH
H2O
Ca
FeS
Atomic crystal lattice
Molecular crystal lattice
Ionic crystal lattice
Metallic crystal lattice
Reorder these substances in order from LOWEST melting point to HIGHEST melting point based on their crystal structures (don't look them up as you won't be able to do this in an exam):
MgCl2
HCl
O2
NH3
Reorder these substances in order from LOWEST melting point to HIGHEST melting point based on their crystal structures (don't look them up as you won't be able to do this in an exam):
He
Zn
CO
H2O
Identify the crystal lattice shown in each diagram:





Ionic crystal lattice
Molecular crystal lattice
Network crystal lattice