Original HESI A2 chemistry practice with written answers. Try the free samples below, then get all 10 chemistry questions in the full $39 bank.
Chemistry covers matter and its states, atomic structure, the periodic table, chemical bonds and reactions, acids, bases and pH, and introductory stoichiometry. The emphasis is on understanding why a reaction behaves the way it does rather than on heavy calculation, which makes conceptual review the most efficient way to prepare.
1. An atom has 17 protons, 18 neutrons, and 17 electrons. What is its mass number?
A. 17B. 34C. 35D. 52Answer: C. Mass number equals protons plus neutrons (17 + 18 = 35).
2. Which of the following elements is a halogen?
A. NeonB. ChlorineC. SodiumD. CalciumAnswer: B. Chlorine is in Group 17 of the periodic table, which is the halogen group.
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Part of the full 68-question HESIReady exam. One payment of $39, every section, with explanations.
Yes. These sample Chemistry questions are free with full explanations. The complete bank has 10 chemistry questions, part of the 68-question HESIReady exam for a one-time $39.
Chemistry covers matter and its states, atomic structure, the periodic table, chemical bonds and reactions, acids, bases and pH, and introductory stoichiometry. The emphasis is on understanding why a reaction behaves the way it does rather than on heavy calculation, which makes conceptual review the most efficient way to prepare.