fingernail
Yes, graphite is a relatively soft mineral with a hardness of 1-2 on the Mohs scale. This means it can be easily scratched by materials with a higher hardness, such as a fingernail, which typically has a hardness of around 2.5.
The mineral you are describing is likely graphite. Graphite has a metallic luster and appears gray in color. It is soft enough to be scratched with a fingernail, which distinguishes it from many other minerals. This characteristic makes graphite an important material in applications such as pencils and lubricants.
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.
Graphite has an extremely low reactivity. Graphite can react with oxygen and sulfuric acid.
Graphite is not magnetic as it is made out of carbon. E.g; Pencil lead is mostly made out of graphite, it is NOT magnetic.
That could be graphite, which is a natural allotrope of the element carbon.
Yes, graphite is a relatively soft mineral with a hardness of 1-2 on the Mohs scale. This means it can be easily scratched by materials with a higher hardness, such as a fingernail, which typically has a hardness of around 2.5.
Yes, graphite can be scratched by a nail. Graphite has a relatively low hardness on the Mohs scale, rating around 1 to 2, which makes it softer than many materials, including the steel used in nails. This means that a nail can easily leave scratches on the surface of graphite.
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.
The mineral you are describing is likely graphite. Graphite has a metallic luster and appears gray in color. It is soft enough to be scratched with a fingernail, which distinguishes it from many other minerals. This characteristic makes graphite an important material in applications such as pencils and lubricants.
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
Graphite is a dark, shiny mineral with a greasy feel and leaves a mark on paper. Talc is a soft mineral that feels powdery and leaves a white mark when scratched. Additionally, talc is not as shiny as graphite.
The Mohs hardness of serpentine is 2,5-3; it a soft mineral. Not scrached by a graphite pen; scratched by fingernail, copper etc.
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.
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.
azurite is one of the minerals that has a light blue streak.
The core of a pencil (used to be actual poisonous lead, now is made of graphite) is soft enough that it can deposit a layer of material when subject to friction (AKA "scratched").