A Substance of Unknown Composition Is Heated in a Sealed

question 130

Multiple Choice

A substance of unknown composition is heated in a sealed container. As a result, the mass of the container and its contents

• A) increases.
• B) decreases.
• C) remains the same.
• D) Any of these could occur.

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Definitions:

Perfection

The state of being completely free from faults or defects, or the highest degree of proficiency in something.

Approach

The method or process taken towards dealing with a problem or task.

Avoidance

A behavioral or psychological strategy to disengage or prevent encountering distressing situations, thoughts, or feelings.

Lewin

A psychologist known for his contributions to social, organizational, and applied psychology, including the development of field theory.