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Thread: acid

  1. matilda


    Hello all, How are you?
    I was studying english grammer and I found strange.
    It was written that (acid) is countable and can take (plural s)
    Is that correct?Because I always thought that all liquids are noncountable


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    Re: acid

    Hi Matilda,

    acid (n) = [uncountable and countable] a chemical substance that has a pH of less than 7.

    Strong acids can burn holes in material or damage your skin:



  3. matilda

    Re: acid

    thank you my dear friend

    That was really usefull

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