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rocks and minerals

nonmetals elements that have dull surfaces and are poor conductors of electricity and heat
cleavage the tendency of a mineral to split along smooth, definite surfaces
hardness the ability of a mineral to resist being scratched
ores used to describe minerals or combinations of minerals from which metals and non-metals can be in usable amounts
fracture the tendancy of a mineral to split along rough or jagged surfaces
extrusive rocks rocks formed from lava
metals elements that have shiny surfaces and are able to conduct elecricity and heat
igneous were originally hot, fluid magma within the earth
rock cycle the continuous changing of rocks from one kind to another over long periods of time
metamorphic are formed when chemical reactions tremendous heat, and/or great pressure change existing rocks into new kinds of rocks
density the amount of matter in a given space
streak the color of powder scraped off a mineral when it is rubbed against a hard, rough surface
rocks the building blocks of earth
luster describes the way a mineral reflects light from its surface
gemstones the minerals that are hard, beautiful, and durable substances that can be cut and polished for jewelry and decoration
mineral naturally occuring, inorganic solid that has a definite chemical composition and chrystal structure
crystal has flat sides that meet in sharp edges and corners
inorganic not man made and not made from the remains of living things
sediments the particles that form sedimentary rocks
instrusive rocks igneous rocks formed deep within earth
sedimentary formed from particles that have been carried along and deposited by wind and water
metamorphism the changing of one type of rock into another as a result of heat, pressure, and/or chemical reactions
what are the 4 characteristics a mineral has to have to be a mineral? always a solid. forms in nature. has a definite chemical make-up. has a specific crystal structure.
what are the most common mineral groups? silcates, carbonates, and oxides
what are silcates made out of? silicon and oxygen
what are carbonates made out of? carbon and oxygen
what are oxides made of? oxygen and metal
what are the properties of a mineral? color, luster, hardness, streak, crystal shape, cleavage, and fracture
why is color not reliable? b/c the color of a mineral can change b/c of exposure to weather, pollution, or radiation
what is the name of the hardness scale? MOH's hardness scale
what is the softest mineral? talc
what is the hardest mineral? diamond
what are some "special" properties of minerals? how it looks under uv light, if it's radioactive, if it tastes strange :)
what mineral are cars and airplanes made out of? metal(s)
what is glass made out of? quartz and feldspar
what is toothpaste made out of? flourite and calcite
what is photo film made out of? silver
what is paint made out of? mica and talc
what are the 2 kinds of gemstones? precious and semi-precious
Created by: lillmissbossy
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