Regents Chemistry Exam August 2025 Question 27 27 When a sample of solid Ca(OH) 2 dissolves in water, the only negative ions in the solution are (1) hydronium ions (3) oxide ions (2) hydroxide ions (4) calcium ions Solution: Ca(OH) 2 produces OH- ions when dissolved in water. OH- ions are called hydroxide ions. Choice 2 is the correct answer choice. LINKS: Regents Chemistry Guides and Solutions Chemistry Tutoring More Regents Chemistry Practice

Regents Chemistry Exam August 2025 Question 26 26  Which element is the most active nonmetal? (1) bromine (2) chlorine (3) fluorine (4) iodine Solution: Table J on the Reference Table lists nonmetals from most active (on top) to least active on the bottom. Fluorine is the most active nonmetal. Choice 3 is the correct answer. LINKS: Regents Chemistry Guides and Solutions Chemistry Tutoring More Regents Chemistry Practice