7. What is the resistance of a mineral to scratching? Cleavage Fracture Hardness Structure

The Hardness of a mineral is a measure of the mineral’sGroup of answer choicesresistance to being flexed (bent)resistance to fracturing under stressresistance to being crushed and pulverizedresistance to being scratched

Which of the following minerals can be scratched by a fingernail?Group of answer choicesOrthoclaseApatiteFluoriteGypsumQuartz

3. Which is the way a mineral breaks apart in an irregular way? Mineral Cleavage Crystal Fracture

Look at the table shown below.Hardness TestsMineral Can be Scratchedby a Fingernail? Can be Scratchedby a Penny?quartz no nocalcite no yestalc yes yesgraphite yes yesWhich mineral in the table has the greatest hardness? A. calcite B. talc C. quartz D. graphite

Looking at Moh's hardness scale, which mineral is the hardest?talcdiamondglassflint