Question

drag the missing word into place
the harder a mineral is, the less it can be scratched.
we use the from 1 to 10,
from the softest, talc, all the way up to diamond.
formula
mohs scale
inorganic

Explanation:

The Mohs scale is a standard scale used to measure the hardness of minerals. It ranges from 1 (softest, like talc) to 10 (hardest, like diamond). The statement in the question is about measuring mineral hardness, which directly relates to the Mohs scale. "Formula" is related to chemical or mathematical expressions, and "inorganic" refers to non - living, non - carbon - based substances (but not a scale for hardness).

Answer:

Mohs scale