Barbara Blithers;
Chinese monosyllabic words are written with two characters per syllable. The
first character is the phonetic component (the syllable itself) and the
second is the semantic component.[...]
In multi syllabic words, say a three syllable word, the syntax can be
[sound] [sound] [sound] [sense/meaning] or it can be a group of 3
sound/sense compounds - these are written with spaces between and give the
false impression that Chinese is monosyllabic.
As for characters that never appear alone, these are called "radicals"[...]