Between 3.5 and 5.5 on the Mohs scale of mineral hardness.
The mineral would have a hardness between 5.5 and 6.5 on the Mohs scale. It cannot scratch glass (hardness of about 5.5) but can scratch an iron nail (hardness of about 4). This places it in the range of minerals like orthoclase feldspar or apatite.
The unknown mineral would have a hardness greater than 5.5 (the hardness of glass) but less than 7 (the hardness of quartz). Based on the Mohs Hardness Scale, the unknown mineral would likely have a hardness between 6 and 7.
The hardness would be between 4.5 and 5.5 on the Mohs scale. I actually think it would be 4.5, but to be safe, I would put between 4.5 and 5.5. Hope that helps!
The unknown mineral is not a mineral, or the pieces being scratched or doing the scratching are not freshly fractured or cleaved surfaces.
The mineral would have a hardness between 5.5 and 6.5 on the Mohs scale. This is because glass has a hardness of around 5.5, while an iron nail has a hardness of approximately 4.5. Therefore, if a mineral can scratch an iron nail but not glass, it would fall within this hardness range.
To distinguish between a mineral with a hardness of 6 and one with a hardness of 4, you can use the glass plate and the copper penny for comparison. First, scratch the mineral against the glass plate; if it scratches the glass, it has a hardness greater than 5. Then, use the copper penny to scratch the mineral; if the mineral scratches the penny, it has a hardness greater than 3. If it scratches the glass but not the penny, it has a hardness of 6; if it scratches the penny but not the glass, it has a hardness of 4.
The mineral would have a hardness between 5.5 and 6.5 on the Mohs scale. It cannot scratch glass (hardness of about 5.5) but can scratch an iron nail (hardness of about 4). This places it in the range of minerals like orthoclase feldspar or apatite.
The unknown mineral would have a hardness greater than 5.5 (the hardness of glass) but less than 7 (the hardness of quartz). Based on the Mohs Hardness Scale, the unknown mineral would likely have a hardness between 6 and 7.
A mineral that can scratch glass but not a streak plate is quartz. Quartz has a hardness of 7 on the Mohs scale, which allows it to scratch glass (which has a hardness of about 5.5) but is harder than the streak plate, typically made from porcelain, which has a hardness of around 6-7. Therefore, while quartz can leave scratches on glass, it will not produce a streak on a streak plate.
The hardness would be between 4.5 and 5.5 on the Mohs scale. I actually think it would be 4.5, but to be safe, I would put between 4.5 and 5.5. Hope that helps!
The unknown mineral is not a mineral, or the pieces being scratched or doing the scratching are not freshly fractured or cleaved surfaces.
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
Google "Mohs hardness scale". This is a relative hardness scale which compares one mineral's hardness to another. (It is between 3.5 and 5.5 on the Mohs hardness scale)
Yes, halite can scratch glass. Halite has a hardness of 2.5 on the Mohs scale, while glass has a hardness of about 5.5. This means that halite is softer than glass and can leave scratches on it.
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.
The mineral would have a hardness between 5.5 and 6.5 on the Mohs scale. This is because glass has a hardness of around 5.5, while an iron nail has a hardness of approximately 4.5. Therefore, if a mineral can scratch an iron nail but not glass, it would fall within this hardness range.
Quartz will scratch glass, as its hardness is usually around 7. Pyrite, on the other hand, has a hardness of 6 to 6.5, meaning it would not be able to scratch glass.