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| A mineral is defined as a crystalline solid that is naturally occurring, has a specific chemical composition and forms through geologic processes. |
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| The atomic mass number is equal to the number of neutrons in an atom. |
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| The atomic number of an element is equal to the number of protons in each atom. |
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| Rocks are defined as naturally-formed aggregates of minerals or mineral-like substances. |
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| Silica is a term for oxygen combined with silicon. |
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| Both graphite and diamond are made of carbon. |
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| All of the most common rock-forming minerals in Earth's crust are silicate minerals. |
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| Minerals that have the same chemical composition but have different crystalline structures exhibit polymorphism |
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| Color is the least reliable physical property in mineral identification. |
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| In order for a particular type of material to be classified as a mineral, it must ____. |
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| The atomic number of an element equals the number of _____ in each atom. |
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| _______ of an element are atoms containing different numbers of neutrons but the same number of protons |
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| The two most abundant elements in Earth's crust are __. |
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| The _____ group and the ___ group are sheet silicates characterized by one direction of cleavage. |
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| Two examples of framework silicates are _____ and ______. |
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| _____ is the ability of a mineral to break, when struck or split, along preferred planar directions. |
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| A silica tetrahedron is composed of four atoms of the element ___ and one atom of __. |
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| The common mineral ___ is an example of an isolated silica tetrahedron structure. |
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| Five of the six minerals collectively known as asbestos contain single chains of silica tetrahedral and belong to the _______. |
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| The ______ group of minerals is characterized by two parallel chains of silica tetrahedra in their structure |
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| The _____ group of minerals are sheet silicates |
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| The mineral ___ is an example of a native element. |
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| The third most abundant element in the Earth's crust is ______; it is more common than iron. |
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| ____ is the most common element in the Earth's crust. |
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| ____ elements make up 98% of the Earth's crust. |
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| The most common minerals in the Earth's crust are the _______. |
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| On Mohs' scale of hardness your fingernail has a value of ____. |
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