Examlex
Instructions: Please define the following key terms.
-Alexander Pushkin
Streak
The color of a mineral's powder when rubbed across a rough hard surface, used as a diagnostic property in mineral identification.
Magnetism
A property of materials that causes them to attract or repel other materials based on the presence of a magnetic field.
Specific Gravity
The proportion between the density of a material and the density of a reference material, usually water, given a certain temperature.
Specific Gravity
The ratio of the density of a substance to the density of a reference substance, typically water for liquids and solids, or air for gases.
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