A Substance Which Lowers the Activation Energy of a Chemical

question 14

Multiple Choice

A substance which lowers the activation energy of a chemical reaction is called a(n)

• A)reducing agent.
• B)catalyst.
• C)oxidizing agent.
• D)carcinogen.

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Definitions:

Muscle Tension

A condition in which muscles remain semi-contracted for an extended period, often as a response to stress or anxiety.

Polygraph

A device used to measure and record physiological indicators such as blood pressure, pulse, and respiration, often used in lie detection.

Ascending Reticular Activating System

A network of neurons in the brainstem essential for regulating arousal and consciousness, influencing alertness and the sleep-wake cycle.

Physiological Arousal

The physical state of being alert, involving physiological changes like increased heart rate and adrenaline.