Atomic Structure and Engineering Materials

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Questions and Answers

What are the basic building blocks of all materials?

  • Electrons
  • Atoms (correct)
  • Protons
  • Neutrons

Which subatomic particle is electrically neutral?

  • Protons
  • Electrons
  • Neutrons (correct)
  • None of the above

What is the charge magnitude for electrons and protons?

  • +1.602 × 10-19 Coulomb (C)
  • 1.602 × 10-19 Coulomb (C)
  • -1.602 × 10-19 Coulomb (C) (correct)
  • -1.602 × 10-9 Coulomb (C)

What is the atomic mass of an atom?

<p>The number of protons plus the number of neutrons (A)</p> Signup and view all the answers

Which subatomic particles have approximately the same mass?

<p>Protons and neutrons (C)</p> Signup and view all the answers

How does atomic structure affect engineering materials?

<p>It affects the behavior and properties of materials (D)</p> Signup and view all the answers

What is the atomic mass of an atom?

<p>The sum of masses of protons and neutrons within the nucleus (C)</p> Signup and view all the answers

What is the atomic number of uranium?

<p>92 (D)</p> Signup and view all the answers

What is Avogadro's number?

<p>The number of atoms or molecules per mole (A)</p> Signup and view all the answers

What do we call a group of atoms bonded together?

<p>Molecules (A)</p> Signup and view all the answers

What is the maximum number of electrons a shell can hold?

<p>$2n^2$ (C)</p> Signup and view all the answers

What type of bond results from the transfer of electrons from one elemental atom to another?

<p>Ionic bond (A)</p> Signup and view all the answers

What happens to an atom when it releases an electron?

<p>It becomes positively charged (C)</p> Signup and view all the answers

Which type of bond involves the physical arrangement of atoms resulting in imbalanced electric charge?

<p>$ ext{Ionic bond}$ (D)</p> Signup and view all the answers

What are valence electrons?

<p>Electrons in the outermost filled shell that participate in the formation of primary bonds between atoms (D)</p> Signup and view all the answers

What is quantum number?

<p>The principle quantum number of a shell (B)</p> Signup and view all the answers

What are the three subatomic particles that make up an atom?

<p>Protons, electrons, neutrinos (D)</p> Signup and view all the answers

Which type of bond directly affects the suitability of materials for real-world engineering applications?

<p>Covalent bond (D)</p> Signup and view all the answers

What is the charge magnitude for electrons and protons?

<p>1.602 × 10-19 Coulomb (C) (B)</p> Signup and view all the answers

What is the atomic mass of an atom?

<p>The number of protons plus the number of neutrons (A)</p> Signup and view all the answers

Which subatomic particles are electrically charged?

<p>Protons and electrons (C)</p> Signup and view all the answers

In the structure of an atom, what is encircled by moving electrons in paths and shells?

<p>Protons and electrons (A)</p> Signup and view all the answers

What is the atomic number of uranium?

<p>92 (A)</p> Signup and view all the answers

What is the atomic mass?

<p>The sum of masses of protons and neutrons within the nucleus (D)</p> Signup and view all the answers

What is Avogadro's number?

<p>6.023 x 10^23 (atoms/mole) (B)</p> Signup and view all the answers

What are valence electrons?

<p>Electrons that participate in the formation of primary bonds between atoms (B)</p> Signup and view all the answers

What is the maximum number of electrons a shell can hold?

<p>$2n^2$ (A)</p> Signup and view all the answers

What is an ionic bond?

<p>The transfer of electrons from one elemental atom to another (A)</p> Signup and view all the answers

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