L1 /
10
CH1012
MATERIALS
Compound:
C2H6O1 - pure,
>one atom type
eg. SiO2, Al(OH)3, Fe2O3 isomers
eg. SiO2, Al(OH)3, Fe2O3 isomers
• the most common
form of most elements
• pure elements and compounds are present
as distinct phases and are held together by
specific types of bonding.
as distinct phases and are held together by
specific types of bonding.
Types
of material
Element: C(s) - pure, one atom type
graphite, diamond, C60
allotropes - different forms
Element: C(s) - pure, one atom type
graphite, diamond, C60
allotropes - different forms
• not a common form
for most elements
• Noble gases, N2, O2, S8, Cu, Ag, Au, Pt
