HESI A2 Chemistry: Topics to Review
Chemistry is included in the HESI Admission Assessment Exam Review. The current HESI review guide covers chemistry along with mathematics, reading comprehension, vocabulary, grammar, biology, and anatomy and physiology. The official HESI scoring guide describes chemistry coverage including matter, chemical equations and reactions, the periodic table, atomic structure, nuclear chemistry, and chemical bonding.
Review Matter
Start with the basics. Understand:
- Solids
- Liquids
- Gases
- Physical properties
- Chemical properties
- Physical changes
- Chemical changes
Being comfortable with these concepts can make later chemistry topics easier.
Study Atomic Structure
Review the basic structure of an atom. Know the roles of:
- Protons
- Neutrons
- Electrons
Also understand how atomic structure relates to elements and their properties.
Learn the Periodic Table
Practice identifying information from the periodic table. Pay attention to:
- Atomic number
- Element symbols
- Groups
- Periods
- General element classifications
Review Chemical Reactions
Practice recognizing basic chemical reactions and understanding what happens when substances react. Also review how chemical equations represent reactions.
Understand Chemical Bonding
Review the basic ideas behind chemical bonds and how atoms interact. Make sure you understand the general differences between common types of bonding.
Practice Problems
Chemistry becomes easier when you practice applying concepts. After reviewing a topic, work through questions without looking at the answer first. Then review your mistakes and identify the concept you need to revisit.
Final Thoughts
A strong HESI A2 Chemistry study plan should begin with the fundamentals. Review matter, atomic structure, the periodic table, reactions, and bonding, then reinforce those concepts with practice questions.



