Anna, around here that's called "seltzer" or "club soda." I believe there's a technical difference between the two (seltzer has slightly more carbonation, I think), but they're often used interchangably. Airlines always call it "club soda," as do higher class bars and restaurants (or those that want to appear higher class). If you're at home, though, or at a diner or something, it's probably seltzer.
About accents and pronounciations --
Webster\'s Online has audio clips of the US standard (aka "unaccented"
) pronounciations of most common words. For some words, like
caramel , they have two. The first little red speaker icon has the two-syllable pronounciation. The second has the three-syllable version.
Paul
