MLEG4.1

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Vocabulary
Mineral : A naturally occurring, not organic solid that has a definite chemical composition. Naturally occurring : A substance that occurs naturally. Inorganic : Something that is completely new, something that did not come from another substance that was once living. Solid : A substance that is together, the particles in the substance stay together so it can not move around like a liquid. Crystal structure : The molecules of a mineral forms in repeating pattern, which makes a crystal structure. Definite chemical composition : Meaning having certain elements. Elements : A substance made by a single atom. Compound : A substance joined by two or more elements. Hardness : How strong a substance is. Streak : The color of the mineral's powder. Luster : How the mineral reflects light. Density : Mass in a space, no matter what the size of the mineral is the density will always stay the same. Crystal systems : Minerals have structures made by the pattern of the atoms of a mineral. Cleavage and fractures : The way a mineral breaks include cleavage and fractures.

Outline

 * What is a mineral?
 * Over 3,000 identified minerals.
 * A naturally occurring, inorganic hard substance.
 * Also has a definite chemical composition and a crystal structure.
 * Naturally occurring
 * Minerals must occur naturally.
 * Some minerals are human-made, they are not exactly a mineral.
 * Inorganic
 * A mineral also has to be inorganic.
 * Inorganic meaning not from a substance that was once living.
 * Solid
 * Minerals must too be a solid
 * The particles of a mineral must stay together, like a solid.
 * A solid does not move like a liquid.
 * Crystal structure
 * The particles of the mineral line up in a pattern.
 * The pattern create the structure.
 * Identifying minerals
 * Every mineral has a special property you can use to identify it.
 * Hardness
 * How strong or hard a mineral is.
 * Mohs hardness scale is a type of scale for testing hardness.
 * Color
 * Color can't identify specific minerals.
 * Streak
 * Streak means the color of the minerals powder.
 * Luster
 * Luster is how the mineral reflects to light.
 * Density
 * Density is always the same, no matter what the size of the mineral.
 * Crystal systems
 * The crystal structure is made by the pattern from a mineral's particle.