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Any material is useful when someone uses it to make something.

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10y ago

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Why is coal useful material?

Coal is a useful material because it is a major source of energy for generating electricity and heat production. It is also used in the production of steel and cement. Additionally, coal can be converted into liquid fuels and other chemicals for various industrial processes.


What useful material may be obtained from bauxite what useful material may be obtained from hematite what are bauxite and hematite called since they produce useful material?

Bauxite is a source of aluminum, which is obtained by refining the bauxite ore. Hematite is a source of iron, which is obtained by smelting the hematite ore. Bauxite and hematite are known as ores, as they are naturally occurring materials that can be processed to extract valuable metals.


When is it useful not useful to heat materials?

It is useful to heat materials when attempting to change their physical properties, such as melting or shaping. However, it may not be useful to heat materials that are sensitive to heat and may degrade or become damaged, or when temperature control is crucial for the material's stability.


What is always a property of an ore?

A property of an ore is that it contains a valuable or useful material that can be mined and extracted profitably.


How can finding the density of a material be useful in identifying the material?

Finding the volume and comparing it to the mass will give you the density, then it is simply a matter of looking up which materials have that density to find what it is. And that is how you can tell how the density can be used