228k views
3 votes
Which mineral is soft enough to be scratched by a fingernail?

a)
corundum
b)
calcite
c)
talc
d)
topaz

1 Answer

4 votes

Answer:

Talc

Step-by-step explanation:

Talc only has a hardness of one on the Moh's scale of hardness. This translates into a very soft material, which results from its layered nature. Naturally, this substance is hydrophobic (dislikes water), and tends not to absorb water, therefore giving some of its favourable water-resistant characteristics.

User Sesodesa
by
8.7k points