2. Cell Chemistry & Cell Components

A covalent bond is likely to be polar if __________.

When one or more pairs of valence electrons are shared by two neutral atoms, what type of bond is formed?

Which of the following occurs when a covalent bond forms? a. Electrons in valence shells are transferred from one atom to another. b. Electrons in valence shells are shared between atoms. c. Partial charges on polar molecules interact. d. Nonpolar molecules are pushed together.by surrounding water molecules.

Which of these molecules would you predict to have the largest number of polar covalent bonds based on their molecular formulas? a. C2H6O (ethanol) b. C2H6 (ethane) c. C2H4O2 (acetic acid) d. C3H8O (propanol)

Which of these molecules would you predict to have the largest number of polar covalent bonds based on their molecular formulas? a. C2H6O (ethanol) b. C2H6 (ethane) c. C2H4O2 (acetic acid) d. C3H8O (propanol)

The atomic number of sulfur is 16. Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound. a. HS b. HS2 c. H2S d. H4S

The atomic number of sulfur (S) is 16. Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound. (Explain your answer.) a. HS b. H2S c. H4S2 d. H4S

In terms of electron sharing between atoms, compare nonpolar covalent bonds, polar covalent bonds, and ions.