Introduction to Chemistry 5th Edition by Rich Bauer - Test Bank. Chapter 3: Chemical Compounds:-Chamberlain College of Nursing

1. The figure shows all but which of the following: A) two elements and a compound. D) three compounds. B) a chemical reaction. E) five molecules. C) one mixture and one pure substance. Ans: D 2. Which of the substance(s) shown in the figure is ionic? A) K2S D) Both Na2SO4 and SO2 B) C) Ans: Na2SO4 SO2 E E) Both K2S and Na2SO4 3. Which of the substance(s) shown in the figure is molecular? A) Na3N D) Both Na3N and KNO3 B) C) Ans: KNO3 NO2 C E) Both KNO3 and NO2 4. Which of the following combinations of elements in a compound would be molecular? A) sodium and nitrogen D) potassium and chlorine B) calcium and oxygen E) sodium and sulfur C) nitrogen and oxygen Ans: C 5. Which of the following combinations of elements in a compound would be ionic? A) barium and fluorine D) hydrogen and fluorine B) hydrogen and sulfur E) all of these C) sulfur and oxygen Ans: A 6. Which of the following combinations of elements in a compound would be ionic? A) sodium and sulfur D) hydrogen and oxygen B) nitrogen and sulfur E) all of these C) phosphorus and fluorine Ans: A 7. Which of the following is classified as an ionic compound? A) NO2 B) CF4 C) CH3OH D) CaCO3 E) all of these Ans: D 8. Which of the following is classified as a molecular compound? A) OH– B) N2 C) SO2 D) Mg(NO3)2 E) all of these Ans: C 9. Rank the boiling points of the following compounds from lowest to highest: CO2, LiF, H2O A) CO2 < H2O < LiF D) H2O < LiF < CO2 B) C) Ans: CO2 < LiF < H2O LiF < CO2 < H2O A E) H2O < CO2 < LiF