Minerals and Mohs Hardness Scale

Diamond has a hardness of ___ on Mohs Hardness Scale.

• 1

• 5

• 8

• 10

What mineral is the softest mineral on Moh's Hardness Scale and the main ingredient in baby powder?

• feldspar

• talc

• gypsum

• kaolinite

How do you test the hardness of a mineral? 

• Throw it against a wall

• Step on it

• Scratch Test

• Kick it until it breaks

A naturally occurring, inorganic solid with a crystal structure and a definite chemical composition is referring to

• density

• streak

• mineral

• non silicate mineral

Tags

NGSS.MS-PS1-1

A mineral's resistance to being scratched is called?

• streak

• luster

• hardness

• heft

The Mohs scale of hardness serves as a basis for a mineral’s ability to be —

• Burned

• Scratched

• Broken

• Frozen

If an unknown mineral scratches fluorite, it is harder than —

• Gypsum

• Feldspar

• Diamond

• Topaz

If a mineral is harder than gypsum, softer than topaz, and has a hardness greater than 4 but less

than 7, it would most likely belong in —

• Box A

• Box B

• Box C

Quartz can be scratched by window glass but not a steel file. Which of the following can be scratched by Quartz?

• Topaz

• Orthoclase

• Diamond

Orthoclase can scratch all the following minerals except –

• Calcite

• Talc

• Topaz