A GIANT COVALENT structure is hard to melt because... [BOTH of these] there are many strong BONDS that must be broken they do not ABSORE HEAT energy [NEITHER of these]

## Step 1: Understanding the properties of a giant covalent structureA giant covalent structure, such as diamond or silicon dioxide, is hard to melt because of the many strong covalent bonds that must be broken. These bonds hold the atoms tightly together in a rigid lattice structure, requiring a large amount of energy to break them apart.### ## Step 2: Analyzing the heat absorption statementThe statement "they do not absorb heat energy" is incorrect. All substances, including giant covalent structures, absorb heat energy. It's the absorption of this energy that leads to an increase in kinetic energy of the particles, causing them to vibrate more and eventually break the bonds holding them together when the substance melts.###