Question

Scientists test for the hardness of a mineral by doing which of the following?

Measuring the mass Observing how light
of the mineral, and reflects off the
comparing it mineral and how
against other the mineral looks as
minerals
a result
Scratching the
mineral against
other substances of
known hardness
Observing the colo
of a mineral and
comparing it
against other
minerals

Answer 1

Scratching the mineral against other substances of known hardness

Step-by-step explanation:

Mohs hardness scale is commonly used as a reference