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The mica would have to be relatively hard and the plastic would have to be relatively soft for this to occur. Micas are generally less than 3 on the Mohs scale of mineral hardness. Plastics generally fall into the 3-4 Mohs range. A higher numbered item on the Mohs scale will scratch a lower numbered item. A lower number will not scratch a higher number.
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What can graphite be scratched by?
fingernail
Can an emerald be scratched by a fingernail?
No, emerald is a very hard substance.
Can graphite be scratched by a fingernail?
yes graphite can be scrathced by a nail
Which minerals can be easily scratched by a fingernail has cleavage a metallic luster and has a black streak?
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.
If a mineral can be scratched by a fingernail but not by a pocket knife what does that tell us about the mineral?
It would have a Mohs hardness somewhere between 2.5 and 5.5.
What rock is soft enough to be scratched by a nail?
Rocks that mostly contain minerals like mica, gypsum, and talc can be scratched by a fingernail.
What can graphite be scratched by?
fingernail
What mineral has nonmetallic luster is black and can be scratched by a fingernail?
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
Can halite be scratched by a fingernail?
Marginally. Halite has a hardness of 2 to 2.5, about the same as a fingernail.
What mineral can be scratched by a penny but not a fingernail?
Calcium
Can talc be scratched by a fingernail?
Talc i assigned a hardness of 1 according to the Mohs scale of hardness. This implies that talc has the least hardness and therefore is soft and can be scratched by a fingernail.
What minerals are soft enough to be scratched by a fingernail?
talc, gypsum
What three minerals can be scratched by a fingernail?
bob fred and bobby
Can an emerald be scratched by a fingernail?
No, emerald is a very hard substance.
Can graphite be scratched by a fingernail?
yes graphite can be scrathced by a nail
Which mineral on Mohs hardness scale can be scratched by your finger?
Talc (1 on the Mohs Hardness Scale) can be scratched by a fingernail.
Which mineral can be easily scratched by a fingernail has a cleavage metallic luster and has a black streak?
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.
