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| ACIDS | BASES |
| Sour lactic acid (muscle somress) develops hydrogen ions (H+) in an solution OH less than | Bitter slippy feel develops hydroxide ions (OH-) in a solution PH larger than |
-It turns out the relative level of acidity or how basic something is depends upon how many of the respentive ions are released.
-An indicator is used to determine how acidic in basis something is.
-It will change colour depending on the amounts of H+ ions. or OH- ions.
-The two most common indicators used are litmus paper md phenolphthalein.
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