HESI A2 Chemistry (V1 & V2) Exam 2026 – Most Tested Questions and Verified Solutions – Chemistry

This document contains HESI A2 Chemistry exam questions and verified answers focused on basic chemistry principles, atomic structure, chemical bonding, oxidation numbers, acids and bases, intermolecular forces, thermodynamics, and solution chemistry. It covers important concepts including ionic and covalent bonding, molarity calculations, pH values, oxidation states, amino acids, periodic table groups, catalysts, intermolecular forces, and chemical reactions. The material is designed to help nursing and healthcare students prepare for the HESI A2 Chemistry exam through concise review questions and foundational chemistry concepts. The guide also reviews temperature conversions, molecular structure, acids and bases, isotopes, biological molecules, chemical equations, and reaction principles commonly tested on nursing entrance and healthcare admission examinations. Keywords HESI A2 Chemistry chemistry exam prep oxidation numbers ionic bonding covalent bonding acids and bases molarity calculations periodic table chemical reactions amino acids intermolecular forces pH scale temperature conversion atomic structure catalysts oxidation states solution chemistry thermodynamics nursing entrance exam chemistry practice questions