define chemical indicators in just 2 lines.
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the chemical indicator s show that the 0hisical property of elements and compound
surajjagadhesan:
wrong
how
An indicator determines whether a given substance is acidic or basic by change of color or smell.
couldn't answer it so had to put in the comments...Is it right?
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a colour change or appearance of a mark indicating that a chemical reaction has occurred
wrong
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