January 2019 NY Regents Chemistry Exam 37 A solution contains 25 grams of KNO3 dissolved in 200. grams of H2O. Which numerical setup can...

January 2019 NY Regents Chemistry Exam 15 A beaker contains a dilute sodium chloride solution at 1 atmosphere. What happens to the...

August 2019 NY Regents Chemistry Exam 39 What is the molarity of 2.0 liters of an aqueous solution that contains 0.50 mole of potassium...

June 2017 NY Regents Chemistry Exam 13 Compared to a potassium atom, a potassium ion has (1) a smaller radius (2) a larger radius (3)...

June 2018 NY Regents Chemistry Exam 11 Based on Table S, which group on the Periodic Table has the element with the highest...

June 2018 NY Regents Chemistry Exam 9 Which ion has the largest radius? (1) Br- (2) Cl- (3) F- (4) I- Solution: Atomic radius increases...

June 2018 NY Regents Chemistry Exam 6 Which element is classified as a metalloid? (1) Cr (2) Cs (3) Sc (4) Si Solution:Metalloids are on...

January 2018 NY Regents Chemistry Exam 35 Which trend is observed as the first four elements in Group 17 on the Periodic Table are...

January 2018 NY Regents Chemistry Exam 34 In which group on the Periodic Table would a nonmetallic element belong if atoms of this...

January 2018 NY Regents Chemistry Exam 10 Which element tends not to react with other elements? (1) helium (2) hydrogen (3) phosphorus...