Question

10
Questiors
1. What state of matter are all minerals?
2. What is a mineral's Fardness?
What tools are used o test a mine al's hardness?
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Answer 1

The answers to the above questions are as follows:

1) Minerals are crystalline solids.

- Common salt is considered an example of a crystalline solid.

- Most minerals are solid but some are also found in liquid forms like natural gas and mercury.

- The crystalline solids generally have flat, shiny surfaces.

2) Hardness is defined as the resistance of the material being scratched

- The test is done by keeping a sharp point of one specimen on an unmarked surface of another specimen to get a scratch.

- Tools used to test a mineral's hardness are a fingernail, steel pocket knife, copper coin, etc.