Mohs Scale of Hardness

Can a penny scratch fluorite?

• Yes 
• No 

Using this scale, which mineral can scratch fluorite?

• Talc 
• Gypsum 
• Apatite 
• Calcite 

Using this scale, which mineral can scratch a Drill bit?

• Talc 
• Topaz
• Corundrum
• Quartz

What can scratch Talc?

• Gypsum
• Diamond
• Quartz
• All of them

A mineral's resistance to being scratched is called?

• streak
• luster
• hardness
• heft

On Moh’s hardness scale a mineral with a hardness of 6 can scratch___________________.

• A mineral with a hardness of 5
• A mineral with a hardness of 8
• All minerals with a hardness greater than 7
• All minerals with a hardness of 6 or less

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

• feldspar
• talc
• gypsum
• kaolinite