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mineral retest
what you should study.
Question | Answer |
---|---|
what are the 5 characteristics all minerals hav in common? | natural, inorganic, solid, definite chemical composition, crystal structure |
what are the 7 properties you test for minerals? | streak, texture, luster, magnetism, hardness, cleavage/fracture, reactive to acid |
how do you test for streak? | rub the mineral on a ceramic tile and observe the line left behind |
how do you test for texture? | by touch |
how do you test for luster? | shine a light on the mineral; does it look like metal? |
how do you test for magnetism? | hold a magnet to it, does it stick? |
how do you test for hardness? | scratch the mineral with your fingernail, penny, nail, or on glass. use Moh's scale to assign a number |
how do you test for breakage? | cleavage is clean breaks in flat plains fracture is jagged and random |
how do you test for chemical property? | drop HCl on the mineral and look for bubbles |
tools you use to test for hardness. . . . | fingernail(soft/lower number), penny(soft/low number), glass(medium/middle number), nail(hard/higher number) |
a mineral must be formed. . . . | naturally, can not be man-made in order to be a mineral |
what is a fossil fuel? | comes from the remains of living things over millions of years, and can be burned for energy |
examples of fossil fuels. . . . | oil, gas, coal |
what is a renewable resource? | something that can be renewed over time; can be used over and over again. examples: sun, wind, water |
what is a nonrenewable resource? | something that has a limited supply; once it is gone, it is gone. examples: fossil fuels |
what is needed to create a fossil fuel? | the right environment, time, heat, and pressure |
the repeating pattern of a mineral forms. . . . | its crystal structure |
what does it mean when a mineral has a definite chemical composition? | that the mineral has the "same recipe" of elements; the same proportions/number and order |