The Mass Number of an Atom Is Determined by the Combined

question 28

Multiple Choice

The mass number of an atom is determined by the combined masses of its ____.  

• A) neutrons and protons
• B) neutrons and electrons
• C) protons and electrons
• D) protons, neutrons, and electrons
• E) neutrons, nucleus, and electrons

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Definitions:

Validity

The extent to which a test measures what it is designed to measure.

Defense Mechanisms

Subconscious practices engaged to block anxiety resulting from emotions or thoughts perceived as unacceptable.

Anxiety

An emotion characterized by apprehension or distress over an unpredictable result.

Countertransference

Emotional reactions of therapists toward their patients, often based on the therapist's own background and psychological issues.