Question

question 6 (1 point)
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when a covalent compound melts, ...
a) covalent bonds are broken to form ions.
b) individual molecules are moved farther apart.
c) the molecules are converted to h₂o and co₂.
d) covalent bonds are broken to form atoms.
e) component ions are separated.

Explanation:

Covalent compounds consist of discrete molecules held together by weak intermolecular forces. When melting occurs, these weak intermolecular forces are overcome, allowing individual molecules to move farther apart. Covalent bonds within the molecules remain intact. Breaking covalent bonds to form ions (a), convert to \(H_2O\) and \(CO_2\) (c), break to form atoms (d) are not what happens during melting of covalent compounds as these involve chemical reactions rather than physical state - change. Covalent compounds are not made of component ions in the first place, so e is incorrect.

Answer:

B. individual molecules are moved farther apart