Identify the following materials as ionic, covalent, polar covalent or metallic. Material 1) Steel composed...

Identify the following materials as ionic, covalent, polar covalent or metallic.
Material
1) Steel composed of iron and 0.40% carbon
2) Calcium sulfide
3) Dinitrogen oxide
4) Sulfur dioxide
5) Lead metal
6) Aluminum sulfate
7) Hydrogen sulfide
8) Carbon monoxide