the temperature at which a given solid will melt. from google
The ability to be crushed is a physical property and therefore is the answer.
You would use a mass spectrometer
15 atoms.
Hope this helped!
Answer: No
Explanation: The reason for this is because calcite has a hardness of 9 while feldspar has a hardness of 21. Calcite can scratch Gypsum which has a hardness of 3.