Since water has a far higher density than air, its molecules are more closely spaced than those of air. As a result, sound from the bell travels through liquid more quickly than via air.

Yes, that is correct. Sound travels faster through liquids, including water, compared to gases like air. This is primarily due to the difference in density between the two mediums. Since water has a higher density, its molecules are more tightly packed, allowing sound waves to propagate more efficiently. In comparison, air molecules are more spread out, leading to a slower speed of sound transmission.