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Vlinerafs " GuidedReadingand Study
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lhis sectionerplainswhatmineralsareandhowtheycanbeidentified.
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L. Becauseminerals are formed by processesthat occur in the natural world,
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2. Complete the concept map that shor,vscharacteristics of minerals.
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Use the concept map to write a definition of a mineral in your own
words. You may use more than one sentence.
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3. Becausemineralsdo not comefrom living things,
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4. A substancethdt keeps its shape becauseits particles can't flow freely is
a(n)
5. A solid with flat sides that meet at sharp edges and corners is called a(n)
6. . Is the following sentencefrue or false?Amineral always contains certain
elementsin definite proportions.
7. Is the following sentencekue or false? Very few mjnerals are
compounds.
8. A substanceformed when two or more elements combine and lose their
disiinci propertiesis a(n)
9. I-r what two ways can elements occur in nafure?
10. Mrat are some exampies of minerals that occur as elements instead of
compounds?
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11. Is the following sentencetrue or false?Geologistshave identified about
300minerals.
12. Is the following sentencetrue or false?Eachmineral hasits or,rrnspecific
properties.
13. WJrycan't color alonebe used to identi-fi7most mineral's?
14. The color of a mineral'spowder is its
15. The term that descdbes how a mineral reflects light from its surface is
L6. Is the following sentencetrue or false?Minerals containing metals often
have a shinv luster.
L7. Circle the letter of each sentencethat is true about the density of a
mineral.
a. A given mineral can have varying densities.
b. The larger the sample of a mineral, the greater its density'
c. Each'mineral has a characteristic density.
d. The density of a mineral is its mass divided by its volume.
18. What is the Mohs hardness scale?
The hardest known
19. The softest known minerai is
mineral is
20. Is the following sentencetrue or false? Amineral cart scratch any
mineral harder than itself.
2L. Is the followins sentencetrue or false? Each piece of a mineral has the
samecrystalstrucfure.
22. }Jow do geologistsclassifycrystalstructures?
Match the term with its definition.
Term
23. cleavage
24. tractutu
25. fluorescence
Definition
a. A mineral's ability to split easily
dong flat surfaces
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to glow under
i.afility
u.ltravioletJ-ight
c. Tne way amineral lookswhen ii
bieaks