Here’s the classification of the properties you provided:
Ionic (9):
- High melting point
- Brittle solids
- Contains a metal and a nonmetal
- Uses oxidation charges to form a bond
- Contains a metal and a polyatomic
- Soluble in water
- Transfer electrons
- Have lattice structures
- Uses Roman numerals when naming
Covalent (7):
- Usually found in a gaseous state
- Contains only nonmetals
- Uses prefixes when naming
- Compounds are known as molecules
- Share electrons
- Creates nonelectrolytes
- Structures are amorphous
Metallic (4):
- Has a "sea of electrons"
- Ductile
- Malleable
- Have delocalized electrons
This classification should help in understanding the properties associated with ionic, covalent, and metallic bonds.