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SCIN 138 SCIN138 FINAL EXAM 1 ANSWERS (AMERICAN PUBLIC UNIVERSITY)

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What type of bond forms from the sharing of electrons between atoms?
Minerals can be described in terms of two kinds of features: assemblage and texture.
In the illustration below, which of the three models depicts an "open system?
The natural samples of corundum pictured below show variations of color from red (ruby) to blue (sapphire). The differences in color is best explained by
The photograph of the quartz crystal below demonstrates that the relative size of the crystal faces can be used to identify a mineral.
The principle of atomic substitution is an exception to the rule that minerals have a specific chemical formula.
Why is steel not considered a mineral?
The ______ cycle circulates water through various reservoirs of the Earth system: the ocean, the atmosphere, the geosphere, and the biosphere
_____ and silicon are the two most common elements in Earth's crust.
Which of the inner planets has an atmosphere too thin to retain much heat and has an average surface temperature of -63° Celsius?
The study of geology is important to human society because _____.
The nebular hypothesis proposes that the solar system coalesced out of a swirling cloud of interstellar dust and gas.
What element bonds with a silicon atom to form the "silicate" tetrahedron?
Which of the inner planets has an atmosphere too thin to retain much heat and has an average surface temperature of -63° Celsius?
A(n) ______ is the smallest chemical unit that retains all of the properties of a compound
Differentiation of the inner planets probably means that each of the rocky planetary bodies _____.
A(n) ______ is the most fundamental substance into which matter can be separated by chemical means.
What charge does the silicate ion contribute to form the silicate minerals?
The ______ forms the outermost compositional layer of solid Earth.
The smallest chemical unit that has all the properties of a particular compound is called a(n)
Which of the inner planets has an atmosphere containing mostly nitrogen and has an average surface temperature of 14.6° Celsius?
The illustration below shows five different silicate structures. Of these, the structure labeled _____ exhibits the strongest structure for silicates.
The smallest chemical unit that has all the properties of a particular compound is called a(n)
Which one of the following is not a system?
The smallest particle that retains all of the chemical properties of an element is called a(n)

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