CCKH+4.1

toc =Properties of Minerals 4.1=

Vocabulary:

 * mineral:** a naturally occurring, inorganic solid that a has a crystal structure and a definite chemical composition.
 * inorganic:** the mineral cannot arise from materials that were once part of a living thing.
 * crystal:** a solid, formed by the repeating pattern of a mineral's particles.
 * element:** a substance composed of a single kind of atom.
 * compound:** two or more elements combined so that the elements no longer have distinct properties.
 * Mohs Hardness Scale:** the scale that ranks ten minerals from softest to hardest.
 * streak:** a color of a mineral's powder.
 * luster:** the term used to describe how a mineral reflects light from it's surface.
 * cleavage:** a mineral that splits evenly along flat surfaces.
 * fracture:** describes how a mineral looks when it breaks in irregular ways.
 * fluorescence:** minerals that glow under ultra-violet light.

Properties of minerals

 * minerals are used in items such as tin-cans or computer chips

What is a mineral?

 * mineral
 * Naturally Occuring
 * cement, brick, steel, glass- made of Earth's crust
 * Inorganic
 * inorganic
 * Solid
 * mineral is always a solid
 * Crystal Structure
 * crystal
 * Definite Chemical Composition
 * element
 * compound

Identifying Minerals

 * each mineral has own specific properties
 * Hardness
 * Mohs Hardness Scale
 * Color
 * color- easily observed physical property
 * Streak
 * streak
 * Luster
 * luster
 * Density
 * each mineral has a characteristic density
 * Crystal Systems
 * crystals grow atom by atom
 * Cleavage and Fracture
 * cleavage
 * fracture
 * Social Properties
 * fluorescence



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