question: What is done to a mineral to determine its place on the Moh's scale?
choices.text: scratch keratin Laboratory classified treatment surveyor percents as a base
choices.label: A B C D E F G H
fact2: Moh's scale is used to describe a mineral's hardness.
combinedfact: Scratching a mineral is required to determine its place on Moh's scale
formatted_question: What is done to a mineral to determine its place on the Moh's scale? (A) scratch (B) keratin (C) Laboratory (D) classified (E) treatment (F) surveyor (G) percents (H) as a base