Changes

| style="height:20px; width:150px; text-align:center;" |Text[[Diamond]] is a '''giant covalent structure''' where each [[Carbon]] [[atom]] has 4 bonds with [[adjacent]] [[atom]]s.| style="height:20px; width:150px; text-align:center;" |Text[[Graphite]] has a '''giant covalent structure''' with each [[Carbon]] [[atom]] has 3 bonds with [[adjacent]] [[atom]]s in a layer with loose [[bond]]s between the layers.| style="height:20px; width:150px; text-align:center;" |Text[[Graphene]] has a '''giant covalent structure''' with each [[Carbon]] [[atom]] has 3 bonds with [[adjacent]] [[atom]]s forming a layer that is one [[atom]] thick.| style="height:20px; width:150px; text-align:center;" |Text[[Silica]] is made of [[Silicon]] and [[Oxygen]] [[atom]]s in a [[lattice]] forming a '''giant covalent structure'''.