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HESI A2 CHEMISTRY-COMPLETE EXAM SET
WITH ACTUAL QUESTIONS AND VERIFIED
SOLUTIONS 2026
What makes an atom's physical structure? - correct-answer -A nucleus and
orbits(sometimes known as electron clouds)
What composes the center of the atom? - correct-answer -Protons and neutrons
What spins in the orbits of an atom? - correct-answer -Electrons
What are the energy levels of the atom called? - correct-answer -Shells or orbits
What is the term used to define an atom that is electrically charged? - correct-
answer -Ionic state.
What is a cation? - correct-answer -An atom with a positive charge
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What is anion? - correct-answer -An atom with a negative charge
What is the structure of the periodic table? - correct-answer -A series of rows
called periods, and columns called groups.
What can be predicted by the group an element occupies? - correct-answer -
Charge and the numbers of electrons in its outer shell.
What is the name and properties of group VIII of the periodic table? - correct-
answer -Noble gases.
They tend to remain neutral in most situations, because their outer orbits are
complete.
What is the atomic number? - correct-answer -The number of protons in the
nucleus, defines an atom of a particular element.
What is the atomic mass? - correct-answer -The average mass of an element's
isotopes.
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What are isotopes? - correct-answer -Different kinds of the same atom that vary
in weight.
What is a compound? - correct-answer -The combination of different elements.
What do chemical reactions resemble? - correct-answer -A cooking recipe.
What are the reactants in a chemical reaction? - correct-answer -The ingredients
of a chemical reaction.
What is the term given to the results of a chemical reaction? - correct-answer -
The products.
Why must a chemical equation be balanced at the end of a reaction? - correct-
answer -Because the law of conservation of mass indicates that mass cannot be
created nor destroyed in a chemical reaction.
HESI A2 CHEMISTRY-COMPLETE EXAM SET
WITH ACTUAL QUESTIONS AND VERIFIED
SOLUTIONS 2026
What makes an atom's physical structure? - correct-answer -A nucleus and
orbits(sometimes known as electron clouds)
What composes the center of the atom? - correct-answer -Protons and neutrons
What spins in the orbits of an atom? - correct-answer -Electrons
What are the energy levels of the atom called? - correct-answer -Shells or orbits
What is the term used to define an atom that is electrically charged? - correct-
answer -Ionic state.
What is a cation? - correct-answer -An atom with a positive charge
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What is anion? - correct-answer -An atom with a negative charge
What is the structure of the periodic table? - correct-answer -A series of rows
called periods, and columns called groups.
What can be predicted by the group an element occupies? - correct-answer -
Charge and the numbers of electrons in its outer shell.
What is the name and properties of group VIII of the periodic table? - correct-
answer -Noble gases.
They tend to remain neutral in most situations, because their outer orbits are
complete.
What is the atomic number? - correct-answer -The number of protons in the
nucleus, defines an atom of a particular element.
What is the atomic mass? - correct-answer -The average mass of an element's
isotopes.
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What are isotopes? - correct-answer -Different kinds of the same atom that vary
in weight.
What is a compound? - correct-answer -The combination of different elements.
What do chemical reactions resemble? - correct-answer -A cooking recipe.
What are the reactants in a chemical reaction? - correct-answer -The ingredients
of a chemical reaction.
What is the term given to the results of a chemical reaction? - correct-answer -
The products.
Why must a chemical equation be balanced at the end of a reaction? - correct-
answer -Because the law of conservation of mass indicates that mass cannot be
created nor destroyed in a chemical reaction.
