Which of these is something that rocks and minerals have in common? Both are formed naturally, have a specific chemical composition, contain organic material, or have a crystalline structure.
Both are formed naturally
the type of luster that is not bright or shiny
dull
the way a mineral reflects light
luster
a naturally occurring inorganic solid with a distinct chemical composition and crystalline structure
mineral
As the numbers on the Mohs Hardness Scale decrease, the hardness of the mineral _______________.
decreases
As the numbers on the Mohs Hardness Scale increase, the hardness of the mineral _______________.
increases
If a steel file has a hardness of 6.5, it will scratch any mineral with a hardness _________
below 6.5
the color of a mineral in its powdered form, as shown when it is rubbed on a porcelain plate or unglazed tile
streak
a scale that ranks the relative hardness of minerals from 1 to 10
Mohs Hardness Scale
the physical property that is least useful for identifying the mineral
color
the type of luster that looks like polished metal
metallic
the type of luster that looks like glass
vitreous
a naturally occurring solid material that is made up of one or more minerals and may contain organic matter
rock
Which crystal comes in many colors, including clear, white (milky), grey (smoky), pink (rose), yellow (citrine), and purple (amethyst).
quartz
the type of luster that is a solid color and shimmers faintly
pearly
physical property of some minerals that cause them to break along smooth, flat surfaces
cleavage
a mineral's resistance to being scratched
hardness
physical property of some minerals that causes them to break with uneven, rough, or jagged surfaces
fracture
softest mineral (scale of 1)
talc
hardest mineral (scale of 10)
diamond
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