Properties Comparison Chart of Four Solids
Ionic solid
Molecular solid
Covalent Network
solid
Metallic solid
Melting / Boiling point
High melting / boiling
point
Relatively low melting
/ boiling point
Very high melting /
boiling point
Melting / boiling points
vary depend on the
metals
Hardness / Malleability
Hard; Brittle
Relatively soft
Very hard, brittle
Malleable and ductile
Conductivity
Poor electrical
conductivity in solid
state; good conductors
in aqueous state
Poor conductor of
electricity and heat
Poor conductors of
electricity
Great conductors of
heat and electricity
Solubility
Soluble in water;
insoluble in non-polar
liquid
Usually insoluble in
water; soluble in
organic solvents.
Insoluble in water and
organic solvents
Usually insoluble
Example
NaCl, CaCo3,
MG(OH)2, etc
CO2, C2H5OH, I2, etc
C, SiO2, SiC, BC, etc
Fe, Cu, Pb, etc