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HESI A2 · Chemistry · HESI A2 Chemistry Practice Test

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which, if any, of the following statements is false?

A. In an endothermic process, solubility typically decreases with an increase in temperature and increases if the temperature decreases

B. In an exothermic process, solubility decreases with an increase in temperature

C. All of the Above

D. None of the Above

Expert Explanatory Rationale

Correct Answer: In an endothermic process, solubility typically decreases with an increase in temperature and increases if the temperature decreases

Question 2 of 5

Which law states that the pressure of an ideal gas is inversely proportional to its volume, given that the temperature and amount of gas remain constant?

A. Henry's law

B. Dalton's law

C. Brown's law

D. Boyle's law

Expert Explanatory Rationale

Correct Answer: Boyle's law

Question 3 of 5

Which bonds involve a complete sharing of electrons and occur most commonly between atoms that have partially filled outer shells or energy levels?

A. Covalent

B. Hydrogen

C. Proportional

D. N/A

Expert Explanatory Rationale

Correct Answer: Covalent

Question 4 of 5

What does the term amphoteric mean?

A. A substance that only acts as a base

B. A substance that can act as both a base and an acid

C. A substance that only acts as an acid

D. A substance that acts as neither a base nor an acid

Expert Explanatory Rationale

Correct Answer: A substance that can act as both a base and an acid

Question 5 of 5

Which, if any, of these statements about solubility is correct?

A. The solubility of a substance is defined as its concentration in a saturated solution

B. Substances with solubilities much less than 1 g/100 mL of solvent are generally considered insoluble

C. A saturated solution is one that cannot dissolve any more solute

D. All of these statements are correct

Expert Explanatory Rationale

Correct Answer: All of these statements are correct

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