What is the charge of a proton?

A proton carries a positive charge (+1). Protons are located in the nucleus of an atom.

What is the atomic number of an element?

The atomic number is the number of protons in the nucleus of an atom. It uniquely identifies each element on the periodic table.

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons, giving them different mass numbers.

What is the mass number of an atom?

The mass number is the total number of protons plus neutrons in the nucleus of an atom.

Where are electrons located in an atom, and what is their charge?

Electrons are located in orbitals (electron clouds) surrounding the nucleus and carry a negative charge (-1).

← HESI A2 Nursing Entrance Exam Study Materials

HESI A2 Chemistry Concepts

Master essential chemistry concepts tested on the HESI A2 Nursing Entrance Exam with these 23 targeted flashcards. Topics include atomic structure, chemical bonding, reactions, solutions, and acids and bases — all critical for nursing school admission. Build the foundational science knowledge needed to succeed on exam day.

23 cards Intermediate Atomic Structure Chemical Bonding Chemical Reactions Acids, Bases & pH Solutions & The Periodic Table

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