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Worksheetsscinece 9 B
Total questions: 41
Worksheet time: 23mins
A geologist who identifies, classifies, and analyzes minerals
Zoologist
Mineralogist
Metasmith
T or F: many minerals have similar colors
True
False
Some minerals change color when exposed to _____
Water
Humans
Air
______ can change a minerals color
Purities
Impurities
Even though the color of a specimen can vary becuase of its impurities, its ______ is always the same color
Streak
Luster
Facets
T or F: not all minerals produce a streak
True
False
The amount and quality of the light that it reflects from its surface is its _______
Streak
Luster
Materials can have either metallic or nonmetallic (a)
Glassy or vitreous, pearly, adamantine, silky, greasy, waxy, earthy or dull, and resinous are all categories of _________ luster
Metallic
Nonmetallic
T or F: crystals come in many different sizes and shapes
True
False
When they have room, crystals build a shape based on the arrangements of _______ in the mineral
Atoms
Chemicals
Compounds
Crystals grow larger by _______ , where atoms are added one-by-one to the existing crystal structure.
Succretion
Accretion
Facets
Each mineral tends to form distinctive crystals with characteristic faces, called ______
Accretion
Facets
Cleavage
Minerals can break either in fractures or cleavage
True
False
Some minerals can split into flat sheets or along certain planes, creating new facets
(a)
Perfect, good, fair, poor, or none are the five ratings for
Cleavage
Luster
Fracture
_______ also involves the number of directions in which a mineral breaks
Fracture
Cleavage
Minerals that break without cleavage planes (a)
(a) properties can include uneven, hackle, fibrous, or conchoidal
Mineralogists can identify minerals by their hardness. The scale to classify and identify minerals by their hardness is the _____
Acid test
Mohs scale
Flame test
Magnetism
T or F: talc is a 10 on the Mohs scale
False
True
Numbers on MOhs scale show only _______ hardness
Complete
Relative
The ratio of a minerals density to the density of water at 4degrees C is its ______
Flame test
Acid test
Specific gravity
The _______ of a substance can be estimated by handling a sample
Molecules
Specific gravity
Mineral reactions to hydrochloride acid produce fizz in this test
Flame test
Acid test
Magnetism
Radioactivity
Other tests for minerals can include radioactivity, luminescence, and refraction
True
False
The physical properties of a mineral include color, streak, luster, crystal shape and growth, cleavage and fracture, hardness, and specific gravity
True
False
What is the most reliable way to identify a mineral using color?
Looking at it
Luster
Streak test
What familiar material has an adamantine luster?
Diamond
Gold
Platinum
What kind of luster should native silver have?
Nonmetallic
Metallic
Check all that apply- crystals grow large by accretion which can occur———
In concentrated water solutions
Cooling molten rock
Cooling chemical vapors
Which mineral property describes how will a crystal breaks along certain flat surfaces?
Cleavage
Fracture
What are five common objects that be used to estimate a minerals hardness?
Copper coin
A steel knife blade
A hardened metal file
Fingernail
Glass
Process of mineralogy involves getting sample, running tests on the samples, identify physical and chemical properties, and then identify, classify, and analyze them
True
False
Which of these options is not one of the physical properties tested to identify a mineral
Color
Magnetism
Hardness
Age
Platinum (Pt) is a
Ore
Native mineral
Mineral mixture
Quartz (SiO2) is a
Ore
Compound mineral
Native mineral
Mineral mixture
Rock that contains both the minerals malachite and azurite is
Ore
Compound mineral
Native mineral
Mineral mixture
A rock that is a useful source of iron (Fe)
Ore
Compound mineral
Native mineral
Mineral mixture
Calcite (CaCO3) is a
Ore
Compound mineral
Native mineral
Mineral mixture
Diamond is a
Ore
Compound mineral
Native mineral
Mineral mixture
