Question

How do you determine hardness of a given substance

Answer 1

Hardness is determined by whether a given mineral is hard 
enough to scratch another substance of known hardness or 
whether that other substance will scratch it. Geologists use 
a scale called Moh's Scale to determine hardness using 
standard minerals of hardness varying from 1 to 10. 
They are, in order (softest to hardest): 
1. talc 
2. gypsum 
3. calcite 
4. fluorite 
5. apatite 
6. feldspar (orthoclase) 
7. quartz 
8. topaz 
9. corundum 

Answer 2

Answer:

the diamond or something like that I have to be a good day at work and hdhdgdgdgdgdgs