Explain why diamond is very hard in terms of its bonding and structure.

Diamond is very hard because it has a giant covalent structure where each carbon atom forms four strong covalent bonds with other carbon atoms. This extensive network of bonds creates a rigid lattice that resists deformation and makes diamond one of the hardest known materials.

This answer is strong because it directly addresses the question by linking the hardness of diamond to its giant covalent structure and the nature of its bonding. It tests the student's understanding of how atomic structure influences material properties.