Somewhere between 3 and 5 on the Mohs scale of relative mineral hardness...
The mineral that can scratch glass but can be scratched by a steel file is quartz. Quartz has a hardness of 7 on the Mohs scale, allowing it to scratch glass, which typically has a hardness of around 5.5. However, a steel file, which has a hardness of about 6.5 to 7, can scratch quartz.
A mineral with a hardness of 6 on the Mohs scale can be scratched by anything harder than a 6, such as minerals with a hardness of 7 or higher. It will not be scratched by minerals with a hardness of 5 or lower.
Minerals are tested for hardness by performing a scratch test. The unknown mineral is scratched with another object that the hardness is known. For example, a unknown mineral may be scratched with a piece of metal to compare the resistance.
This property is known as the hardness of the mineral. It is determined by the strength and arrangement of atoms within the mineral's structure, affecting how easily it can be scratched by other materials. Hardness is measured using the Mohs scale, which ranks minerals from 1 (softest) to 10 (hardest).
Mineral that can be scratched with a knife blade or a window glass is gypsum.
The mineral that can be scratched by glass but not a penny is calcite. Calcite has a hardness of 3 on the Mohs scale, which is lower than the hardness of glass (5.5) but higher than that of a penny (2.5).
It would have to be 5.0 because glass has a hardness of 5.5 and an iron nail has the hardness of 4.5
The mineral that can scratch glass but can be scratched by a steel file is quartz. Quartz has a hardness of 7 on the Mohs scale, allowing it to scratch glass, which typically has a hardness of around 5.5. However, a steel file, which has a hardness of about 6.5 to 7, can scratch quartz.
It would have to be 5.0 because glass has a hardness of 5.5 and an iron nail has the hardness of 4.5
A mineral with a hardness of 6 on the Mohs scale can be scratched by anything harder than a 6, such as minerals with a hardness of 7 or higher. It will not be scratched by minerals with a hardness of 5 or lower.
The mineral with hardness 3 will get scratched.
This mineral is likely quartz. Glass has a hardness level of around 5.5, while quartz has a hardness of 7. A nail, which is made of iron, generally has a hardness around 4.
The unknown mineral is not a mineral, or the pieces being scratched or doing the scratching are not freshly fractured or cleaved surfaces.
hardness is how easily a mineral can be scratched
Hardness is the measure of how easily a mineral is scratched.
Mineral hardness measures the resistance of a mineral to scratching or abrasion. It is determined by the ability of a mineral to scratch another mineral or be scratched by it, as defined by the Mohs scale of hardness.
It would have to be 5.0 because glass has a hardness of 5.5 and an iron nail has the hardness of 4.5