What is different about metallic bonds? (2.3)
What will be an ideal response?
Answer: Electrons roam freely within metallic substances, accounting for their ability to conduct electricity and reflect rays of light. So, minerals with metallic bonds are said to have metallic luster, looking similar to bright, shiny metal. Copper, gold, and silver are examples of minerals?each consisting exclusively of the atoms of a single element?that exhibit metallic bonds.
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Geothermal energy is energy in the form of heat from
A) the interior of the earth. B) the sun. C) biomass. D) friction from the earth's plates. E) recycled heat from factories.
Why would you expect alpha particles to be less able to penetrate materials than beta particles of the same kinetic energy?
A. Alpha particles carry twice the electric charge. B. Alpha particles pick up electrons to become harmless helium atoms. C. Alpha particles move much slower for a given kinetic energy. D. Two of the above answers are reasonable.
Lava always erupts violently, but magma often flows quietly
Indicate whether the statement is true or false
Lead poisoning in children is an example that exemplifies the problem of ________ for minority children in the United States.
A. Sanitary conditions B. Inadequate healthcare C. Environmental racism D. Inadequate nutrition E. Poverty