Unit 8 Topic 5 (Blue)

Compared to H2S, the higher boiling point of H2O is due to the

• greater molecular size of water

• stronger hydrogen bonding in water

• higher molarity of water

• larger gram-formula mass of water

Which term represents an intermolecular force in a sample of water?

• hydrogen bonding

• covalent bonding

• metallic bonding

• ionic bonding

Which compound has hydrogen bonding between its molecules?

• CH₄

• CaH₂

• KH

• NH₃

When NaCl(s) is dissolved in H₂O(), the sodium ion is attracted to the water molecule's

• negative end, which is hydrogen

• negative end, which is oxygen

• positive end, which is hydrogen

• positive end, which is oxygen

Which type of attraction results from the formation of weak momentary dipoles?

• ionic

• metallic

• dipole-dipole

• Van der Waals forces

The attraction that nonpolar molecules have for each other is primarily caused by the presence of

• hydrogen bonding

• high ionization energy

• electronegativity differences

• Van der Waals forces

Which substance has molecular forces of attraction mainly due to Van der Waals forces?

• sodium chloride

• helium

• diamond

• water

Which statement explains why H₂O has a higher boiling point than N₂?

• H₂O has greater molar mass than N₂.

• H₂O has less molar mass than N₂.

• H₂O has stronger intermolecular forces then N₂.

• H₂O has weaker intermolecular forces than N₂.

Which compound has the strongest intermolecular forces?

• HF

• CH₃Cl

• CH₃F

• HCl

When compared to H₂S, H₂O has a higher boiling point because H₂O contains stronger

• metallic bonds

• covalent bonds

• ionic bonds

• hydrogen bonds