The Dulong-Petit law approximates the heat capacity of materials in this phase. Silicon dioxide can be an example of the "amorphous" type of this phase, during which (*) sublimation can occur. The phase diagram of water has a negative slope between this phase and the liquid 
The Dulong-Petit law approximates the heat capacity of materials in this phase. Silicon dioxide can be an example of the "amorphous" type of this phase, during which (*) sublimation can occur. The phase diagram of water has a negative slope between this phase and the liquid phase. For 10 points, name this phase of matter, exemplified by materials such as glass.
The Dulong-Petit law approximates the heat capacity of materials in this phase.
solid (accept crystals before "amorphous")