Question

Glass has a hardness that is in the middle of the hardness scale. What is the hardness of Glass?

hardness 9
hardness 8
hardness 5
hardness 10

Answer 1

The answer is hardness 5

Answer 2

Glass has been rated on the Mohs scale (a scale that measures the hardness of objects) as 5.5. So i my opinion, that leads me to believe that hardness 5 is the correct answer.