coal
True, hardness is determined by how easily a mineral can be scratched. The Mohs scale is commonly used to measure hardness, with higher numbers indicating greater hardness.
Correct. Minerals that do not split apart evenly, like quartz or obsidian, exhibit fracture instead of cleavage. Fracture can be described as uneven, conchoidal, splintery, or fibrous, depending on how the mineral breaks.
True. Boiling point is not a reliable characteristic for identifying minerals because many minerals have overlapping boiling points. Other properties like hardness, cleavage, and color are more effective for mineral identification.
The test described is called a streak test, and indicates the true color of a mineral as observed in a powdered form.
Coal is not considered a mineral because it is organic in nature, formed from the remains of plants. Unlike minerals, which are inorganic and have a crystalline structure, coal does not have a consistent chemical composition or crystal structure. This distinction classifies coal as a sedimentary rock rather than a mineral.
That is not true. Mineral EXIST therefore they "are".
The powder indicates the true color of the mineral and is an aid in mineral identification. That can also be called a streak.
The color of the powdered form of a mineral is called
This is true by definition.
True. In general, a mineral can scratch any mineral that is softer than itself according to Mohs Scale of Mineral Hardness. This means that a mineral with a higher number on the scale can scratch a mineral with a lower number.
No, it is not because it is organic.
No, luster refers to the way light interacts with the surface of a mineral, like metallic or non-metallic. The true color of a mineral is determined by its inherent chemical composition.
It is true that if you are deficient in a certain mineral you may have an enhanced ability to taste that mineral, and it will taste good.
Not exactly sure what you mean...do you mean "true or false: a given mineral can have varying densities?" If you do mean that, than the answer is true.
Yes, it is true.
no
false a mineral can not scratch any mineral harder than itself