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Free Practice Quiz Question List

02 Minerals Online Quiz Questions

Use this free practice quiz with 20 questions to review 02 Minerals, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

Which description best defines a mineral?

  1. A

    A naturally occurring mixture of rock fragments with no consistent structure

  2. B

    A naturally occurring, inorganic solid with an orderly crystal structure and characteristic composition

  3. C

    Any solid produced by cooling molten material, whether natural or manufactured

  4. D

    A substance identified solely by its visible color

02
True or false
1 point

True or false: A mineral’s visible color alone is usually enough to identify it reliably.

  1. A

    True

  2. B

    False

03
Fill in the blank
1 point

In silicate minerals, a silicon atom surrounded by four oxygen atoms forms a .

04
Choose one
1 point

A mineral looks dark green, but rubbing it on an unglazed porcelain plate leaves a pale powder mark. Which property does the powder mark show?

  1. A

    The color of light reflected from a polished surface

  2. B

    The resistance of a mineral to being scratched

  3. C

    The color of a mineral’s powder

  4. D

    The shape of a mineral’s crystal faces

05
Written response
1 point

What mineral property describes breaking along repeated, relatively flat planes set by the crystal structure?

06
True or false
1 point

True or false: Molten rock that cools slowly underground can form larger mineral crystals than molten rock that cools rapidly at the surface.

  1. A

    True

  2. B

    False

07
Fill in the blank
1 point

Halite can form when salty water loses water through .

08
Choose one
1 point

A mineral scratches a reference material ranked 5 on the Mohs scale but is scratched by a reference material ranked 7. Which conclusion best fits the scale?

  1. A

    It ranks scratch resistance; a higher-ranked mineral can scratch a lower-ranked material.

  2. B

    It measures hardness in equal-sized units, so a value of 8 is twice as hard as 4.

  3. C

    It ranks minerals by how dark their streaks are.

  4. D

    It measures how easily a mineral breaks along cleavage planes.

09
Written response
1 point

What Mohs-scale value is assigned to talc? Enter the value as a number.

10
Choose all
1 point

Select all the processes described as ways minerals can form.

  1. A

    Minerals crystallize as magma or lava cools.

  2. B

    Minerals precipitate from water as it evaporates or its temperature or chemistry changes.

  3. C

    Hot, mineral-rich fluids deposit minerals in cracks as they cool or react with surrounding rock.

  4. D

    Heat, pressure, or chemically active fluids transform minerals without fully melting the rock.

  5. E

    Minerals form whenever loose sediment is compacted, even without chemical or mineral changes.

11
Choose all
1 point

Select all the correctly matched silicate minerals and structural arrangements.

  1. A

    Olivine contains isolated tetrahedra.

  2. B

    Pyroxenes form chains.

  3. C

    Micas form sheets.

  4. D

    Feldspars and quartz have framework structures.

  5. E

    Micas have framework structures, while quartz forms sheets.

12
Choose one
1 point

Which statement best describes the relationship between granite and minerals?

  1. A

    It is a mineral made entirely of calcite.

  2. B

    It is a rock made mostly of quartz, feldspar, and mica.

  3. C

    It is a single mineral composed of gold and copper.

  4. D

    It is a rock consisting only of halite crystals.

13
Open ended
1 point

Two clear mineral samples may be either quartz or calcite. Explain how you could distinguish them using at least two properties, and why color alone would not be reliable.

14
True or false
1 point

True or false: The Mohs hardness scale is a linear scale.

  1. A

    True

  2. B

    False

15
Written response
1 point

What mineral property is the color of its powder?

16
Choose one
1 point

In scratch tests, mineral A scratches mineral B, while mineral C scratches mineral A. What can you conclude using the Mohs scale?

  1. A

    C is harder than A, and A is harder than B; the size of the hardness differences is unknown.

  2. B

    A is harder than C, and B is harder than A; the differences are equal.

  3. C

    B is harder than A, and C is softer than A.

  4. D

    C is harder than A, and the difference between C and A is twice the difference between A and B.

17
Choose one
1 point

Two bodies of the same molten rock cool and solidify. One cools slowly underground, while the other cools rapidly at the surface. Which prediction about their crystals is best supported?

  1. A

    The underground rock will generally have smaller crystals because it cools slowly.

  2. B

    The underground rock will generally have larger crystals because it cools slowly.

  3. C

    Both rocks will have the same crystal size because they began as molten rock.

  4. D

    The surface rock will generally have larger crystals because it cools rapidly.

18
Written response
1 point

What mineral property describes breakage that does not follow cleavage planes?

19
Choose one
1 point

A clear mineral sample has a Mohs hardness of 3, prominent cleavage, and fizzes when dilute hydrochloric acid is applied. Which identification best fits these observations?

  1. A

    Quartz, because quartz has prominent cleavage and fizzes in dilute acid.

  2. B

    Quartz, because quartz has a Mohs hardness of 3 and fizzes in dilute acid.

  3. C

    Calcite, because calcite is softer, has prominent cleavage, and fizzes in dilute acid.

  4. D

    Calcite, because calcite is harder than quartz and lacks cleavage.

20
Choose one
1 point

A mineral is identified as pyrite. Which major nonsilicate class does it belong to?

  1. A

    Oxide

  2. B

    Sulfide

  3. C

    Carbonate

  4. D

    Halide