Here's why:
* Schwa sound: The schwa sound is a very short, unstressed vowel sound represented by the symbol /ə/. It is often found in unstressed syllables.
* Scratch: The word "scratch" has two syllables: "scr" and "atch." The stress falls on the first syllable, "scr." The vowel sound in "scr" is a short "e" sound, which is not a schwa. The vowel sound in the second syllable, "atch," is a short "a" sound, also not a schwa.
Therefore, the word "scratch" does not contain a schwa sound.