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CH1012
SURFACE AREA
Surface
Area
Available
surface area determines reactivity and adsorption properties for a particle.
The ratio:
S.A. / Volume is high for colloids.
Length of side
Number of Total
Surface
of cube cubes area of cubes
of cube cubes area of cubes
1 cm 1 6 cm2
1mm 103 (in
1 cm3) 60 cm2
Colloids
1 mm 1012 6 m2
10 nm 1018 600 m2
