An Element Is Distinct Because of Its Number of

question 4

Multiple Choice

An element is distinct because of its number of

• A)protons.
• B)neutrons.
• C)electrons.
• D)the total mass of all the particles.
• E)none of the above

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Definitions:

Endorphins

Naturally occurring peptides in the brain that act as neurotransmitters and have pain-relieving properties similar to morphine.

Agitation

A state of anxiety or nervous excitement, often manifesting as restless or tumultuous behavior.

Anxiety

A feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome.

Acetylcholine

A neurotransmitter in the brain and peripheral nervous system important for muscle activation, and involved in attention, learning, and memory.