June 2017 NY Regents Chemistry Exam 12 Which substance has nonpolar covalent bonds? (1) Cl2 (2) SO3 (3) SiO2 (4) CCl4 Solution: A bond...

January 2018 NY Regents Chemistry Exam 42 Based on Table H, what is the vapor pressure of CH3COOH at 90.°C? (1) 40. kPa (2) 48 kPa (3)...

January 2018 NY Regents Chemistry Exam 37 Which bond is most polar? (1) C–O (2) H–O (3) N–O (4) S–O Solution:The polarity of the bond is...

January 2018 NY Regents Chemistry Exam 9 Which phrase describes the molecular polarity and distribution of charge in a molecule of carbon...

August 2018 NY Regents Chemistry Exam 39 The least polar bond is found in a molecule of (1) HI (2) HF (3) HCl (4) HBr Solution: The...

August 2018 NY Regents Chemistry Exam 19 Compared to H2S, the higher boiling point of H2O is due to the (1) greater molecular size of...

August 2018 NY Regents Chemistry Exam 13 A solid sample of copper is an excellent conductor of electric current. Which type of chemical...

August 2018 NY Regents Chemistry Exam 10 Which two terms represent major categories of compounds? (1) ionic and nuclear (2) ionic and...

January 2019 NY Regents Chemistry Exam 9 Which two terms represent types of chemical formulas? (1) empirical and molecular (2) polar and...

August 2019 NY Regents Chemistry Exam 36 Which compound has covalent bonds? (1) H2O (2) Li2O (3) Na2O (4) K2O Solution: Covalent bonds...