acid

[matilda]

Hello all, How are you?
I was studying english grammer and I found s.th 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


Regards,
matilde

[vil]

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:

Regards,

V

[matilda]

thank you my dear friend

That was really usefull