CHE 104 Lecture Notes - Lecture 13: Trigonal Planar Molecular Geometry, Amorphous Solid, Network Covalent Bonding

• School: West Chester University
• Department: Chemistry
• Course: CHE 104
• Professor: Townsend

Document Summary

Atoms are held in an infinite two dimensional or three dimensional network. Wide range of hardness and melting points. Can be used as pencils, as you write sheets come off onto paper. Sheets are held together by covalent bonds, but not entire structure. Everything is held together by covalent bonds. Covalently bonded networks with no low range regularity (not crystalline) There are no repeating patterns like you see in crystals or other shapes. As you increase the temperature you will see that more and more begins to melt. When you break glass there is a variety of shape/ sizes that it breaks into, unlike crystals where each cut can be duplicated. This type of solid does not conduct electricity in its solid state but does conduct electricity in its liquid state. Endothermic: of a reaction or process accompanied by or requiring the.