Examlex
The total entropy of any system plus that of its environment increases as a result of any natural process.
Minerals
Naturally occurring inorganic substances with a definite chemical composition and crystalline structure, forming the building blocks of rocks.
Scratch Test
A method used to determine the relative hardness of minerals by scratching them with an object of known hardness or with other minerals.
Effervescence
The potential of a mineral to have a vigorous bubbling reaction when a drop of dilute hydrochloric acid (HCl) is placed on it.
Magnetism
A physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.
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