A Covalent Bond

question 20

Multiple Choice

A covalent bond:

• A) forms only between identical atoms.
• B) involves a sharing of only one pair of electrons.
• C) is always polar.
• D) may be polar or nonpolar depending on the atoms involved.
• E) always forms between identical molecules.

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Definitions:

Negative Reinforcer

A stimulus whose removal following a behavior increases the likelihood of that behavior being repeated in the future.

Positive Reinforcer

Any stimulus that, when presented after a behavior, increases the likelihood of that behavior being repeated in the future.

Punisher

A stimulus or event that follows a behavior and decreases the likelihood of that behavior occurring in the future.

Self-Modification

The process through which individuals change their behavior or self-perception through self-determination and personal effort.