HESI A2 Chemistry 2026 | Comprehensive
Study Guide, Practice Questions, Answers
& Detailed Exam Review |
Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, What makes an atom's physical structure? A nucleus and orbits(sometimes known as electron clouds)
What composes the center of the atom? Protons and neutrons
What spins in the orbits of an atom? Electrons
What are the energy levels of the atom called? Shells or orbits
What is the term used to define an atom that is electrically Ionic state.
charged?
What is a cation? An atom with a positive charge
What is anion? An atom with a negative charge
What is the structure of the periodic table? A series of rows called periods, and columns called groups.
What can be predicted by the group an element occupies? Charge and the numbers of electrons in its outer shell.
What is the name and properties of group VIII of the Noble gases.
periodic table? They tend to remain neutral in most situations, because their outer orbits are
complete.
What is the atomic number? The number of protons in the nucleus, defines an atom of a particular element.
What is the atomic mass? The average mass of an element's isotopes.
What are isotopes? Different kinds of the same atom that vary in weight.
What is a compound? The combination of different elements.
Study Guide, Practice Questions, Answers
& Detailed Exam Review |
Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, What makes an atom's physical structure? A nucleus and orbits(sometimes known as electron clouds)
What composes the center of the atom? Protons and neutrons
What spins in the orbits of an atom? Electrons
What are the energy levels of the atom called? Shells or orbits
What is the term used to define an atom that is electrically Ionic state.
charged?
What is a cation? An atom with a positive charge
What is anion? An atom with a negative charge
What is the structure of the periodic table? A series of rows called periods, and columns called groups.
What can be predicted by the group an element occupies? Charge and the numbers of electrons in its outer shell.
What is the name and properties of group VIII of the Noble gases.
periodic table? They tend to remain neutral in most situations, because their outer orbits are
complete.
What is the atomic number? The number of protons in the nucleus, defines an atom of a particular element.
What is the atomic mass? The average mass of an element's isotopes.
What are isotopes? Different kinds of the same atom that vary in weight.
What is a compound? The combination of different elements.
