Measuring the hardness of calcite requires what?
melting those materials hardened backbone amount of heat 70-75 degrees Fahrenheit cutting those materials scratching yourself thermal expansion scratching those materials
A B C D E F G H
Calcite is a very common mineral.
Measuring the hardness of calcite requires scratching those materials
Measuring the hardness of calcite requires what? (A) melting those materials (B) hardened backbone (C) amount of heat (D) 70-75 degrees Fahrenheit (E) cutting those materials (F) scratching yourself (G) thermal expansion (H) scratching those materials