Metallurgy and Metal Shaping Quiz
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Questions and Answers

Which of the following elements can be classified as metalloids?

  • Boron (correct)
  • Sodium
  • Oxygen
  • Aluminum
  • Which element is a very reactive metal but exists as a gas at room temperature?

  • Oxygen
  • Carbon
  • Nitrogen
  • Hydrogen (correct)
  • What property of metals results from the mobility of the valence electrons in the crystal lattice?

  • Good electrical and thermal conductivity (correct)
  • Lustrous surface
  • Opacity
  • High density
  • In a normal environment, which of the following metals is a liquid at room temperature?

    <p>Mercury</p> Signup and view all the answers

    What causes the metallic sound (ring) when a metal is struck?

    <p>The mobility of the valence electrons in the crystal lattice</p> Signup and view all the answers

    Which element is a metal that exists as a gas at room temperature?

    <p>Hydrogen</p> Signup and view all the answers

    Which property of metals results from the proper packing of atomic structure in the crystal lattice?

    <p>High density</p> Signup and view all the answers

    Which element is an example of a metalloid?

    <p>Silicon</p> Signup and view all the answers

    What causes the opacity of metals?

    <p>Ability to absorb light by valence electrons</p> Signup and view all the answers

    Which property of metals results from the mobility of the valence electrons in the crystal lattice?

    <p>Good electrical and thermal conductivity</p> Signup and view all the answers

    Which element, existing as a gas at room temperature, is a very reactive metal?

    <p>Hydrogen</p> Signup and view all the answers

    Which property of metals results in their lustrous surface?

    <p>Ability of the valence electrons to reflect light</p> Signup and view all the answers

    Which element ionizes positively in solution and provides electrons to the outer circuit in a galvanic cell if two metals are present?

    <p>Metal</p> Signup and view all the answers

    Which element is an example of a metalloid showing both metallic and nonmetallic properties?

    <p>Boron</p> Signup and view all the answers

    What causes the opacity of metals?

    <p>Ability of the valence electrons to absorb light</p> Signup and view all the answers

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