Classify the following solid as ionic, metallic, molecular, covalent or amorphous.

${\mathrm{P}}_4{\mathrm{O}}_{10}$

Classify the following solid as ionic, metallic, molecular, covalent or amorphous.

Graphite

Classify the following solid as ionic, metallic, molecular, covalent or amorphous.

Brass

Classify the following solid as ionic, metallic, molecular, covalent or amorphous:

${\left({\mathrm{NH}}_4\right)}_3{\mathrm{PO}}_4$

Classify the following solid as ionic, metallic, molecular, covalent or amorphous:

$\mathrm{SiC}$

Classify the following solid as ionic, metallic, molecular, covalent or amorphous:

$\mathrm{Rb}$

Classify the following solid as ionic, metallic, molecular, covalent or amorphous:

${\mathrm{I}}_2$

Classify each of the following solids as ionic, metallic, molecular, covalent or amorphous:

$\mathrm{LiBr}$

Classify the following solid as ionic, metallic, molecular, covalent or amorphous:

${\mathrm{P}}_4$