Solids
Highest density, lowest energy form
Solids only slightly more dense than liquids; atoms or molecules not really in closer proximity than in liquid
Solids do not deform readily; atoms or molecules have ‘fixed’ positions
Crystallinity, the ordered internal arrangement of atoms or molecules, is characteristic feature of solids
A single compound in different crystal structures solids will exhibit different physical properties
- Diamond & graphite
- Ice I, ice II, etc. to Ice X