Question 6. Why does the author mention the "simplest view of a covalent bond"?
A) To contrast it with a polar covalent bond
B) To emphasize the importance of covalent bonds
C) To provide a general overview of covalent bonds
D) To explain the formation of chemical bonds
Question 7. The word "valence" in the passage is closest in meaning to…
A) Inside
B) Outside
C) Center
D) Middle
Question 8. The phrase "polarization in covalent bonds" in the passage is closest in meaning to…
A) Breaking of covalent bonds
B) Change in covalent bonds
C) Division of covalent bonds
D) Imbalance in covalent bonds
Question 9. Which of the sentences below best expresses the essential information in the following sentence? "These bonds exist between two particular identifiable atoms and have a direction in space, allowing them to be shown as single connecting lines between atoms in drawings, or modeled as sticks between spheres in models."
A) Bonds connect specific atoms and can be visualized in drawings or models.
B) The direction of bonds between atoms can be seen in drawings or models.
C) There are bonds between particular atoms and they have a direction in space.
D) The bonds between atoms are represented as connecting lines in drawings or as sticks in models.
Question 10. Look at the four letters – (A), (B), (C), and (D), – that indicate where the following sentence can be added to the passage. "In a polar covalent bond, one or more electrons are unequally shared between two nuclei." Where would the sentence best fit?
(A)
(B)
(C)
(D)