Talc (1 on the Mohs Hardness Scale) can be scratched by a fingernail.
A mineral's resistance to being scratched is known as it's hardness. You can determine hardness by scratching it with another material whose hardness is already known. If it can be scratched, then the hardness is lower. If the unknown leaves a scratch on the known material, then its hardness is higher.
The Mohs scale of mineral hardness is generally used to determine the hardness of a mineral. The Mohs scale rates the ability of mineral to scratch or be scratched by another mineral.
Talc is one such mineral and as such is a reference mineral in the Mohs Hardness Scale.
Hardness - measure of how easily a mineral is scratched.
Tals, a mineral, has a hardness of 1 on the Mohs scale of relative mineral hardness, a 1 being the one able to be scratched by the remaining nine minerals. It's soft.
A mineral's resistance to being scratched is known as it's hardness. You can determine hardness by scratching it with another material whose hardness is already known. If it can be scratched, then the hardness is lower. If the unknown leaves a scratch on the known material, then its hardness is higher.
Hardness is the measure of how easily a mineral can be scratched.
The Mohs scale of mineral hardness is generally used to determine the hardness of a mineral. The Mohs scale rates the ability of mineral to scratch or be scratched by another mineral.
A mineral with a hardness of 6 on the Mohs scale can be scratched by anything harder than a 6, such as minerals with a hardness of 7 or higher. It will not be scratched by minerals with a hardness of 5 or lower.
The Mohs mineral hardness scale.
Mohs hardness scale measures that.
Minerals have a fairly specific range of hardness, based on the Mohs hardness scale. The Mohs scale is based on the ability of a mineral to be scratched, or scratch, another mineral. Using the Mohs scale to determine mineral hardness is one test that can be used to help identify one mineral from others.
Somewhere between 3 and 5 on the Mohs scale of relative mineral hardness...
Mohs scale of hardness
Talc is one such mineral and as such is a reference mineral in the Mohs Hardness Scale.
A mineral's resistance to being scratched (or when a force is applied) is called its hardness.There are different measurements of hardness: scratch hardness, indentation hardness, and rebound hardness. A material's hardness depends on ductility, elastic stiffness, plasticity, strain, strength, toughness, viscoelasticity, and viscosity.
Mineral hardness is tested on a glass plate or usually a finger nail.