The Identity of an Element Can Be Determined by the Number

question 133

Multiple Choice

The identity of an element can be determined by the number of

• A) protons.
• B) neutrons.
• C) electrons.
• D) carbon atoms.
• E) double bonds.

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Definitions:

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another in the nervous system.

Synapse

The junction between two neurons, where nerve impulses are transmitted from one to the other.

Sodium

A chemical element, symbol Na, that is a highly reactive metal and an essential mineral for living organisms.

Potassium

A chemical element with symbol K and atomic number 19, essential for various bodily functions including neural activity and muscle contraction.