Free CH Sound Medial Words Flashcards Worksheet PDF. Printable flashcards featuring words with the medial “CH” sound can be a useful tool for improving pronunciation and vocabulary. Some of the words in this flashcards worksheet are:- Matchbox, Crunchy, Keychain, Teacher, Beachball, Witch hat, Peachpie, Kitchen, Matching, Ketchup, Nachos, Touchdown, Crutches, Pitcher, Marching, Stretching