Yes, finger nails are a mixture iron and sodium cloride.
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
The most commonly known mineral that can be scratched with a fingernail is talc.
The most commonly known mineral that can be scratched by a fingernail is talc.
Gypsum has a hardness of 2 on the Mohs scale, which is similar to the hardness of a fingernail.
Talc is a mineral that is softer than a human fingernail, measuring only 1 on the Mohs scale of mineral hardness. It is commonly used in baby powder and cosmetics due to its soft texture.
The fingernail test is for minerals and if a mineral is soft then you stick your fingernail in the mineral and if it is below 10 on the moh's hardness scale then it can put a dent into the mineral hope that helps!!
The mineral that has a similar hardness to a fingernail is gypsum. Gypsum has a Mohs hardness of 2, which makes it soft enough to be scratched by a fingernail.
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
The most commonly known mineral that can be scratched with a fingernail is talc.
The most commonly known mineral that can be scratched by a fingernail is talc.
Gypsum has a hardness of 2 on the Mohs scale, which is similar to the hardness of a fingernail.
If a fingernail can scratch a mineral, you are testing the mineral's hardness. Hardness is a measure of a mineral's resistance to being scratched by other materials. Minerals are ranked on the Mohs scale of hardness from 1 (softest) to 10 (hardest).
Well you see, it's pretty simple. If a fingernail has a hardness of 2.5, and the question is asking what mineral can easily be scratched by a fingernail. Well then it is Graphite. It has a less hardness than your fingernails.
Talc is a mineral that is softer than a human fingernail, measuring only 1 on the Mohs scale of mineral hardness. It is commonly used in baby powder and cosmetics due to its soft texture.
The mineral that fits this description is graphite. Graphite is very soft and can be easily scratched by a fingernail. It has a metallic luster and a black streak.
On the Mohs hardness scale, Stibnite is about 2 while fingernails are about 2.2-2.5. This means that stibnite is softer than a fingernail, but only slightly.
The Moh's scale is used to test the hardness of a mineral. It will be tested by a fingernail scratching it.