By its vinegary taste and smell.
how can you tell that vinegar is sour
Since wine is acidic, the baking soda will react, and bubble/foam similar to adding baking soda to vinegar (or anything acidic for that matter). The best way to tell is to taste and smell it. Wine turns to vinegar through a reaction with oxygen. Store corked bottles sideways so the cork does not dry. Take other steps to ensure oxygen does not come in contact with the wine.
I put vinegar on my chips. I bathe in vinegar. Don't do that, it'll smell like vinegar after! I use vinegar as a cleaning product. Drink vinegar? HELLS YEAH #YOLO
You can use cider vinegar or rice vinegar and only the most discriminating palates will tell the difference.
You can tell when vinegar diffuses into a cube as the cube is wet and smells like acetic acid (vinegar smell).
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You can tell lunch meat is past its prime by appearance, color, texture and smell. If it has become slimy or ropey, has odd things growing on it (like mold or pink slime), has changed color, turned mushy and/or smells different (of ammonia, vinegar or yeast), don't eat it.
I don't know tell me
Check the label
I thought that you could test pills in vinegar to see if they dissolve. That would tell you if they dissolve in your body.
You can tell that a boy is turned on if he tells you that he is turned on. He may want to do things with you like kiss and stuff.
i don't know... u should tell me!