The word "amid" contains a closed syllable. In linguistic terms, a closed syllable ends with a consonant sound, making the vowel in the syllable short. In "amid," the letter "m" closes off the syllable, resulting in a short "i" sound.
Photo is an open syllable word.
It is an open syllable.
First syllable closed, second syllable open.
Closed
Closed
The second syllable is open, the first is closed.
Paper is a closed syllable word.
Both open syllables.
Both closed.
It's a closed syllable.
It's a closed syllable.
Swim is a closed syllable.