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HESI A2 V2 Chemistry Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What is the molar mass of water (H₂O)?✔✔18 g/mol
Which type of bond involves the sharing of electrons between atoms?✔✔Covalent bond
Which type of bond results from the transfer of electrons from one atom to another?✔✔Ionic bond
What is the chemical formula for table salt?✔✔NaCl
Which element is a halogen?✔✔Chlorine
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What is the pH of a neutral solution?
✔✔7
Which gas is most abundant in the Earth’s atmosphere?✔✔Nitrogen
What is the process by which a solid turns directly into a gas?✔✔Sublimation
Which element has the highest electronegativity?✔✔Fluorine
What is the chemical symbol for potassium?
✔✔K
Which type of reaction releases energy to the surroundings?✔✔Exothermic reaction
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Which type of reaction absorbs energy from the surroundings?✔✔Endothermic reaction
What is the oxidation number of oxygen in most compounds?
✔✔-2
Which element is a noble gas?✔✔Neon
What is the chemical formula for carbon dioxide?
✔✔CO₂
Which state of matter has a definite volume but no definite shape?✔✔Liquid
What is the molecular formula of glucose?
✔✔C₆H₁₂O₆
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