What is Mohs hardness scale used for?

What is Mohs hardness scale used for?

• A. To determine a mineral's taste and smell.
• B. To rank minerals by their resistance to scratching from 1 (talc) to 10 (diamond).
• C. To measure a mineral's density.
• D. To identify a mineral by color in daylight.

Answer: (B)

Mohs hardness scale measures how hard a mineral is by its resistance to scratching. It’s a practical way to compare minerals because hardness reflects a fundamental property you can test directly. The test uses a standard set of reference materials; if one mineral can scratch another, it’s the harder one. If it gets scratched, it’s softer. The scale runs from talc, the softest, up to diamond, the hardest. This makes the scale useful for identifying minerals and assessing how durable they are for various uses. Colors or appearance aren’t reliable for identification, and density is a different property measured separately, while taste or smell isn’t a valid or safe method for testing minerals.

Mohs hardness scale measures how hard a mineral is by its resistance to scratching. It’s a practical way to compare minerals because hardness reflects a fundamental property you can test directly. The test uses a standard set of reference materials; if one mineral can scratch another, it’s the harder one. If it gets scratched, it’s softer. The scale runs from talc, the softest, up to diamond, the hardest. This makes the scale useful for identifying minerals and assessing how durable they are for various uses. Colors or appearance aren’t reliable for identification, and density is a different property measured separately, while taste or smell isn’t a valid or safe method for testing minerals.