H₂O represents water - a molecule composed of two hydrogen atoms bonded to one oxygen atom.
Hydrogen (H): The element that forms bonds with oxygen to create water molecules like H₂O.
A molecule like water (H₂O) that has an uneven distribution of charge due to differences in electronegativity between atoms.
A substance capable of dissolving other substances. Water is known as the universal solvent because it can dissolve many different solutes.