Glass

{
  "id": "MLC-T-CHM-004890",
  "term": "Glass",
  "field": "Chemistry",
  "definition": "A non-crystalline solid material that exhibits a glass transition, which is a reversible transition in amorphous materials from a hard and relatively brittle state into a molten or rubber-like state. This state is characterized by a continuous decrease in viscosity with increasing temperature, rather than a sharp melting point. Many polymers, ceramics, and metallic alloys can form glasses.",
  "subject": "Polymer",
  "see_also": [
    "crystalline state",
    "glassy state"
  ],
  "references": [
    "PAC, 2013, 85, 1017. 'Glossary of terms relating to thermal and thermomechanical properties of polymers (IUPAC Recommendations 2013)' on page 1029 (https://doi.org/10.1351/PAC-REC-12-03-02)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/glass/"
}