Mass action

Mass action may refer to:

• Law of mass action, in chemistry, a postulate of reactions
• Mass action (sociology), in sociology, a term for situations in which a large number of people behave simultaneously in similar ways individually and without coordination
• Mass action (physics), in statistical physics, the proposition that a large number of small units acting randomly may compose a larger pattern
• Mass Action Principle (neuroscience), in neuroscience, the belief that memory and learning are distributed and can't be isolated within any one area of the brain.
• [[Mass tort], or mass action, in law, which is when plaintiffs form a group to sue a defendant (for similar alleged harms).

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