a penny has a hardness of 3 depending on what it is being scratched on.
A penny has a Mohs hardness of around 3.5. This means that it can be scratched by harder materials like glass or quartz, but it can scratch softer materials such as chalk or talc.
Yes, scientist have turned "mundane" form of carbon into diamond by applying enormous amounts of heat and pressure. These conditions are similar to what forms diamonds naturally. The process is expensive though.
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.
Yes, graphite is harder than gypsum, so it can scratch gypsum.
calcite
No because a coper penny is and quartz is 7 so any ting softer than 7 cannot scratch
no because fluorite is softer than a penny
A penny would scratch minerals with a lower hardness rating such as calcite, gypsum, or talc. Minerals like quartz or topaz would not be scratched by a penny because they are harder than the metal in a penny.
Hardness of the dimond
A copper penny can scratch materials with a Mohs hardness of 2.5 or lower, such as gypsum, talc, and some plastics. It will not scratch harder materials like glass, steel, or most ceramics.
The Mohs hardness of serpentine is 2,5-3; it a soft mineral. Not scrached by a graphite pen; scratched by fingernail, copper etc.
The pin code is the number you have to scratch off with a penny or something. You can find that pin code at the back of the game card where it says "scratch gently with a penny" then you'll find the code once you scratch it off.
The copper of the penny will rub off the file
Most igneous rocks are harder than a penny, so it is unlikely that a penny would be able to scratch an igneous rock. Igneous rocks are typically composed of minerals like quartz and feldspar, which have a higher hardness than copper (the main material in pennies).
When you scratch a mineral with a penny, nail, and your fingernail, you are testing the mineral's hardness. The ability to scratch or be scratched by certain materials helps determine the mineral's hardness on the Mohs scale of mineral hardness.