Lecture 1 of the “Crystallography” course
1. Solid state
Represents a state of matter with the following characteristics:
A) high density of constituent particles (atoms, molecules)
B) strong interatomic/intermolecular bond (forces)
C) stability of shape
D) stability of thermal motion (a warmer body = stronger vibration of particles)
E) small oscillations of particles around equilibrium positions (rest positions)
Type of solids:
A) crystalline - characterized by orderly arranged particles with long-range order
Б) amorphous - characterized by randomly arranged particles with short-range order.
The ordering of particles can be non-periodic or periodic (translational).
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