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Question
Use the Periodic table below to answer the following questions:
Element 20, Ca, has what chemical property?
A) It behaves as a metal ion, giving up two electrons to form a +2 ion.
B) It tends to form covalent bonds and an ion with a charge of +1.
C) It behaves as a nonmetal, accepting electrons to form an ion with charge -2.
D) It tends to be inert, and thus is dispersed throughout the crust.
Answer
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Related questions
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A) coal
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A) reserve
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What does the tendency of micas to produce thin cleavage flakes suggest about its crystal structure?
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B) The structure is characterized by rings that form an interlocking network, forming planar sheets.
C) The structure is produced by flow in the igneous rock, aligning glass layers within the crystal structure.
D) The atoms are arranged in orderly arrangements that form strongly bonded sheets separated by weak bonds between the sheets.
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Use the Periodic table below to answer the following questions: When electrons are shared amongst all atoms, the resulting bond is a(n) ________ bond.
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B) ionic
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Which of the following is not a system?
A) the biosphere
B) soil, plants, rock, soil organisms, and animals
C) the study of minerals
D) the Pacific Ocean and the west coast of North America
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What is the source of the energy that powers the Earth system?
A) the Sun
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A) deep-ocean trenches
B) oceanic ridges
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B) flat areas that include rocks older than 1 billion years old
C) flat river valleys that cut through older mountain ranges
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A) along coastlines
B) near desert regions
C) in the interior of continents
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A) viscosity
B) temperature
C) density
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The Andes Mountains in South America are formed by ________.
A) subduction
B) sea floor spreading
C) back-arc contraction
D) continental collision
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Which of the following layers in the earth has the highest density?
A) Lithosphere
B) Asthenosphere
C) Lower mantle
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Oceanic crust is generated at ________.
A) hot spots on the sea floor, like Iceland
B) spreading ridges
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Convergent plate boundaries are ________.
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B) sites where heat from the earth's interior is vented to the surface as volcanos
C) areas where two plates slide laterally past one another, generating earthquakes, like the San Andrea fault
D) sites of supervolcanos like Yellowstone