Acids form aqueous solutions with a sour taste, can turn blue litmus red, and react with bases and certain metals (like calcium) to form salts.
ˈæsɪdz fˈɔːɹm ˈeɪkwɪəs səlˈuːʃənz wɪð ɐ sˈaʊɚ tˈeɪst, kæn tˈɜːn blˈuː lˈɪtməs ɹˈɛd, ænd ɹɪˈækt wɪð bˈeɪsᵻz ænd sˈɜːʔn̩ mˈɛɾəlz lˈaɪk kˈælsiəm tə fˈɔːɹm sˈɔlts.