Phases (states of matter)
Gas - particles
are very mobile (km / s)
- large average interparticle
distance
- fills container, no surface, low
r
eg. H2 = homonuclear diatomic
Liquid -
particles are mobile (mm / s)
- small interparticle
distance
- fills container, forms a
surface
Solid - particles non mobile and in contact
- fixed
shape, high r
Amorphous - SiO2 -
glass
Crystalline - SiO2 - quartz