Condensation is steam.

The cloud of condensation formed when steam cools is just that -- a cloud. Steam, like oxygen and water vapor, is an invisible gas.

Water as a conductor.

Pure water is a very poor conductor of electricity. Pure water undergoes a small amount of dissociation into H⁺ and OH^-, and these conduct. Nearly all water contains at least some dissolved salts, and these conduct electricity. Salt solutions are good conductors.

Pure water, not just molecules.

Pure water undergoes a small amount of dissociation into H⁺ and OH^-.

"Pure" water.

Nearly all water contains some dissolved solutes. Essentially, water dissolves at least a little bit of any container that holds it.

Advantages of bottled water.

Bottled water is either very pure, or it comes from natural sources that contain rather large amounts of dissolved substances.

Tiny bubbles in boiling water.

The tiny bubbles that form when water is heated to near boiling almost always consist of dissolved air leaving the water. Boil tap water. Cool it without much shaking. The boil it again. do those bubbles reappear?

Fish use oxygen in the water molecule.

Fish use oxygen dissolved in water. If this water is removed (say, by sweeping with a stream of pure nitrogen gas), the fish suffocate

Other liquids are like water.

Water is extremely unusual. It boils high, has large heats of vaporization and melting, is very polar (and therefore is an unusually good solvent), and is found in large amounts on earth's surface.