Chemistry: Ions and Molecules

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Questions and Answers

What is the defining characteristic of a cation?

  • It has more electrons than protons
  • It has more protons than electrons
  • It carries a net negative charge
  • It carries a net positive charge (correct)

Which type of compound exhibits high boiling and melting points, solubility in water, and good conductivity?

  • Covalent compounds
  • Polyatomic ions
  • Ionic compounds (correct)
  • Diatomic molecules

What is the oxidation number or state defined as?

  • The total number of protons in an atom
  • The total number of neutrons in an atom
  • The number of valence electrons in an atom
  • The total number of electrons gained or lost by an atom (correct)

Which compound is a nonpolar covalent bond most likely to be found in?

<p>$CO_2$ (Carbon dioxide) (C)</p> Signup and view all the answers

What defines a polyatomic ion?

<p>It consists of two or more types of atoms (A)</p> Signup and view all the answers

What is the atomic number of carbon?

<p>6 (B)</p> Signup and view all the answers

Which branch of chemistry studies carbon-containing compounds?

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

What did Friedrich Wohler find in 1828?

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

What is the exclusive composition of hydrocarbons?

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

What is the name of the purest form of carbon?

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

What is the study of past human activities using carbon technology called?

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

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