I'd like to welcome you,
AaronG: to the Chemical Forums. According to the
Forum Rules{click}, we want to see your attempt, so please click on that link, read the contents, and comply with our rules, so we can help you.
There is not much we can do here, except do this problem for you. You're asking for us to give you definitions, and you either read and understand those from your book or class notes, or you don't. There's no hint we can give. Unless perhaps, you want to give a paraphrased (or memorized) definition of:
metallic, networld, molecular, or ionic
and then take a stab at which one describes the form you recognize these solids to be.