breaking covalent bonds
Breaking covalent bonds throughout the solid would be required to melt a network solid.
The energy required to melt a substance. (Apex)
Heat of fusion.
heat of fusion
If you are a solid, you melt. If you are a liquid, like water, you vaporize.
Energy is given off when cooling from a liquid to a solid. How much depends on the elements involved and the amount.
Depending on the solid you could melt it or bash it then melt it or cut it up. But it depends on the solid, mostly if its food you can just melt it. xxxx
If the solid is made of ice, then it will melt. But if you have enough heat, you can make the solid item melt.
The energy required to sublime (solid to gas) a substance at 1 ATM pressure is greater than the energy required to melt (solid to liquid) a substance. When you compare the energies in varying pressures, however, this trend is not always the case. If you Google any 'general phase diagram', you can see that under the triple point, when all phases are in equilibrium, have solid and gas meeting under a certain pressure. In a vacuum, it would require less energy to sublime than to melt.
The scientific meaning for melt is when, a solid is turned into a liquid by melting the solid.
Network solid
network solid-APEX