7. Molecules of water are

Explanation:   Water is a chemical compound and polar molecule, which is liquid at standard temperature and pressure. It has the chemical formula H2O, meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. Water is found almost everywhere on earth and is required by all known life.

answer; and he had to live thus all alone on the brink of an abyss, with no one who understood or pitied him;