Elements in Group 18 (VIIIA) Are Called __________

question 120

Multiple Choice

Elements in group 18 (VIIIA) are called __________

• A) alkali metals.
• B) noble gases.
• C) alkaline earth metals.
• D) halogens.
• E) chalcogens.

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Definitions:

Gate-control Theory

A theory suggesting that the spinal cord contains a neurological "gate" that controls the transmission of pain signals to the brain, influenced by psychological factors.

Pain Perception

The subjective interpretation and individual experience of pain, which can be influenced by various physical, emotional, and psychological factors.

Endorphins

Natural, pain-relieving chemicals produced by the body that bind to opioid receptors in the brain to reduce pain and boost pleasure, resulting in a feeling of well-being.

Sense of Smell

The ability to perceive and identify odors through the olfactory system, an essential component of taste and environmental awareness.