Covalent and Ionic Bonds

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Questions and Answers

What is the defining characteristic of a covalent bond?

  • Sharing of electrons (correct)
  • Attraction of bonding electrons
  • Exchange of electrons
  • Creation of ions

In an ionic bond, how do two atoms deal with their valence level instability?

  • Create ions and attract bonding electrons
  • Have similar electronegativities
  • Share electrons equally
  • Exchange electrons (correct)

What type of bond forms when two atoms have different electronegativities?

  • Nonpolar covalent bond
  • Covalent bond
  • Ionic bond (correct)
  • Polar covalent bond

How do atoms in a nonpolar covalent bond share electrons?

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

What analogy is used in the text to explain nonpolar covalent bonds?

<p>Kids playing tug-of-war (B)</p> Signup and view all the answers

Which scenario is most likely to result in a polar covalent bond?

<p>Atoms with very different electronegativities (A)</p> Signup and view all the answers

What is the role of electronegativity in predicting how atoms will form bonds?

<p>Helps predict if atoms will share electrons equally (B)</p> Signup and view all the answers

In a polar covalent bond, which atom will be slightly more negative?

<p>The more electronegative atom (C)</p> Signup and view all the answers

How are electrons shared in a nonpolar covalent bond?

<p>Equally between the two atoms (C)</p> Signup and view all the answers

What is the key characteristic of an ionic bond?

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

How do partial charges affect the polarity of a molecule?

<p>They generate opposite poles in the molecule (C)</p> Signup and view all the answers

What happens to the middle of a rope if one person is stronger than the other?

<p>It moves towards the stronger person (C)</p> Signup and view all the answers

What does it mean for a covalent bond to be polar?

<p>The electrons are shared unequally (A)</p> Signup and view all the answers

How does the electronegativity of an atom affect its charge in a polar covalent bond?

<p>It creates partial charges (A)</p> Signup and view all the answers

What can be said about electron clouds in atoms?

<p>'Orbitals' are predictions of electron location (B)</p> Signup and view all the answers

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