A Persistent Difficulty in Concentrating, Remaining Still, and Working on a Task

question 103

Multiple Choice

A persistent difficulty in concentrating, remaining still, and working on a task are the key characteristics of

• A) mania.
• B) autism.
• C) attention-deficit/hyperactivity disorder.
• D) psychostimulant abuse.
• E) obsessive-compulsive disorder.

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Definitions:

Catalyst

Substance that increases the rate at which a chemical reaction proceeds without being changed permanently.

Chemical Reaction

A process that leads to the transformation of one set of chemical substances to another, characterized by the breaking and formation of bonds.

Solute

Dissolved substance in a solution.

Oxidator

A chemical agent or substance that is capable of accepting electrons in a redox reaction, often leading to the oxidation of another substance.