2 (596)

Surface area = 6m²

Surface area = 12 m²

0.5 m

0 5 m (b)

Surface area = 24 m²

0.25 m

0.25 m

(c)

Particie size and

chcmical weathering. As a rock is reduced into sinaller and smaller particles, its surface area incrcases but its volumc* remains che same. In (a) the surface area is 6 m², in (b) it is 12 m², and in (c) 24 m , but che voiume remains the same at l m . Smali particles havc morę surface area in proporcion to their volume than do largo particles.