Diamond - Giant Covalent Structure/Bonding (I'm pretty sure that was the 'technical' term given to it at school for me)
Methane - Simple Covalent Structure/bonding (sp³ Hybridisation, if you have ever heard of that)
Hydrogen Chloride - Simple Ionic Structure
Ethane - Simple Covalent
Oxygen - Simple Covalent (Double Bond)
Nitrogen - Simple Covalent (Triple Bond)
Ammonia - Simple Covalent (sp³ hybridisation with one lone pair in one of the hybrid orbitals) (Dative would be for ammonium, with H+ borrowing the lone pair of electrons)

I think that's the sort of thing you are aafter :?

Now, she asked what they LOOKED LIKE,
not which models best described them 8)

Sorry boss:

Diamond - lots of little black carbon atoms connected to 4 other ones in a tetrahedron
Methane - just a single little tetrahedron
Hydrogen Chloride - dimer, one big end, one small end
Ethane - I'm not gonna describe that in words
Oxygen - Dimer, symmetrical
Nitrogen - Dimer, symmetrical (closer together than Oxqgen)
Ammonia squeesed single tetrahedron unit with one thingy missing (for the lone pair), so a kinda pyramid, I guess.

i spos that kind of helped me i've found out that i need to do them in a dot and cross diagram do i do them the same as what you told me to do for drawing them?

Ah, no.
Dot and cross is different.
I'm a bit rusty with those, but here they are (I think), in the order you listed them. Diamond is dodgy - each dot or cross of each carbon shares a cross or dot with a totally different carbon. kinda. You just aren't supposed to do diamond with dot and cross pics. The theory behind it is the magic octet - you've got to have 8 electrons around each atom (or 2 for Hydrogen) to have a full shell, and thus to make the atoms happy atoms. So some electrons are shared between atoms, pairing dots and crosses. Each paired dot and cross = 1 bond. So there are three paired dots and crosses in the same place on Nitrogen, meaning a triple bond.

Paired dots or paired crosses means a lone pair.

Is the first picture methane then hydrogen chloride, ethane, oxygen, nitrogen and then ammonia?

Diamond
Methane
Hydrogen Chloride
Ethane
Oxygen
Nitrogen
Ammonia

Although I'm not convinced how accurete the first one, Diamond, is.
You just can't do dot & cross for that, really.

don't care if it's wrong i'm just glad i can give the homework in

Do you know how to get the Electronegativity Difference by chance?

Look up the electronegativity values and subtract!