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Nonmetallic minerals like halite and gypsum have no industrial uses.

A) True
B) False

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Overall, the physical properties of minerals provide a reliable means to identify common minerals. However, certain properties can exhibit a range of characteristics or values making them less useful for identification purposes. Choose three physical properties that might vary considerably between samples of the same mineral and explain why such variability might exist.

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Three physical properties that might var...

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A compound is a stable chemical substance composed of two or more ________.

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Which of the following is NOT one of the eight most common elements in the Earth's crust?


A) carbon
B) potassium
C) aluminum
D) calcium

E) A) and C)
F) A) and B)

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An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus?


A) 19
B) 7
C) 13
D) 6

E) A) and C)
F) B) and C)

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Atoms of the same element, zinc for example, have the same number of ________.


A) electrons in the nucleus
B) protons in the nucleus
C) neutrons in the outer nuclear shell
D) electrons in the valence bond level

E) B) and D)
F) B) and C)

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A mineral can be composed entirely of one element.

A) True
B) False

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Which of the following is NOT a fundamental particle found in atoms?


A) neutron
B) selectron
C) electron
D) protons

E) A) and C)
F) A) and B)

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Which of the following minerals is a silicate?


A) hematite
B) feldspar
C) calcite
D) halite

E) A) and B)
F) A) and C)

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What is the smallest particle of matter that exhibits and defines the distinctive chemical characteristics of the individual elements?

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The resistance of a mineral to abrasion is known as ________.


A) luster
B) cleavage
C) streak
D) hardness

E) A) and B)
F) A) and C)

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Using the information from Table 2.1, identify five different materials that you encounter or use on a daily basis and give a possible mineral that could be mined to supply those materials. Can you think of any other considerations other than economic that might prohibit or limit the mining of certain minerals?

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Which of the following is correct for isotopes of the same element?


A) The atoms have different numbers of protons and the same number of neutrons.
B) The atoms have the same number of electrons and different numbers of protons.
C) The atoms have different numbers of neutrons and the same number of protons.
D) The atoms have different numbers of electrons but the same number of neutrons.

E) A) and B)
F) A) and C)

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Moh's hardness scale is a relative measure of which physical property of minerals?

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All minerals exhibit cleavage.

A) True
B) False

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In the silicon-oxygen tetrahedron, there are more silicon atoms than oxygen atoms.

A) True
B) False

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What is the hardest mineral known?

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A cubic centimeter of quartz, olivine, and gold weighs 2.5, 3.0, and 19.8 grams respectively. This indicates that ________.


A) gold has a higher density and specific gravity than quartz and olivine
B) gold is 6 to 7 times harder than olivine and quartz
C) gold and olivine are silicates, whereas quartz is elemental silicon
D) olivine and quartz powders are harder than metallic gold

E) C) and D)
F) All of the above

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Which the following denotes the positively charged particles in an atom's nucleus?


A) protons
B) electrons
C) isotrons
D) neutrons

E) All of the above
F) None of the above

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Mineral deposits which have been identified and can be extracted profitably are called ________.


A) reserves
B) ores
C) resources
D) tailings

E) B) and C)
F) A) and D)

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