9. Which explains the flammability of covalent molecular compounds?
a. Molecules easily react flames
b. They contain carbon and hydrogen atoms that react readily with oxygen gas.
c. Covalent molecular compounds share their electrons forming polar and
nonpolar bonds
d. Because they generally have low melting and boiling points and the addition of
small amount of energy causes intermolecular attraction to break.
10. Which combination of atoms is most likely to have an ionic bond?
a. Al and F b. P and H
c. C and o
d. Si and o
11. Which of the following properties is true about ionic compounds?
a. Have low melting and boiling point
b. Are stronger than covalent bonds
c. Can conduct electricity in the solid state
d. Usually formed between two metals​