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Ch.2 (FInal)
Minerals
| Question | Answer |
|---|---|
| (T/F) A mineral is defined as a crystalline solid that is naturally occurring, has a specific chemical composition and forms through geologic processes. | True |
| (T/F) The atomic mass number is equal to the number of neutrons in an atom. | False |
| (T/F) The atomic number of an element is equal to the number of protons in each atom. | True |
| (T/F) Rocks are defined as naturally-formed aggregates of minerals or mineral-like substances. | True |
| (T/F) Silica is a term for oxygen combined with silicon. | True |
| (T/F) Both graphite and diamond are made of carbon. | True |
| (T/F) All of the most common rock-forming minerals in Earth's crust are silicate minerals. | True |
| (T/F) Minerals that have the same chemical composition but have different crystalline structures exhibit polymorphism | True |
| (T/F) Color is the least reliable physical property in mineral identification. | True |
| In order for a particular type of material to be classified as a mineral, it must ____. | All of the answers are correct. |
| The atomic number of an element equals the number of _____ in each atom. | protons |
| _______ of an element are atoms containing different numbers of neutrons but the same number of protons | Isotopes |
| The two most abundant elements in Earth's crust are __. | oxygen and silicon |
| The _____ group and the ___ group are sheet silicates characterized by one direction of cleavage. | mica; clay |
| Two examples of framework silicates are _____ and ______. | quartz; feldspar |
| _____ is the ability of a mineral to break, when struck or split, along preferred planar directions. | Cleavage |
| A silica tetrahedron is composed of four atoms of the element ___ and one atom of __. | oxygen; silicon |
| The common mineral ___ is an example of an isolated silica tetrahedron structure. | olivine |
| Five of the six minerals collectively known as asbestos contain single chains of silica tetrahedral and belong to the _______. | pyroxenes |
| The ______ group of minerals is characterized by two parallel chains of silica tetrahedra in their structure | amphibole |
| The _____ group of minerals are sheet silicates | mica |
| The mineral ___ is an example of a native element. | graphite |
| The third most abundant element in the Earth's crust is ______; it is more common than iron. | aluminum |
| ____ is the most common element in the Earth's crust. | Oxygen |
| ____ elements make up 98% of the Earth's crust. | 8 |
| The most common minerals in the Earth's crust are the _______. | silicates |
| On Mohs' scale of hardness your fingernail has a value of ____. | 2.5 |
Created by:
Thomas.Siu
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