They react with amphoteric oxides: for example, the oxides of aluminium, zinc, tin, and lead react with the alkali metal hydroxides to give aluminates, zincates, stannates, and plumbates.
ðeɪ ɹɪˈækt wɪð ˌæmfoʊtˈɛɹɪk ˈɑːksaɪdz: fɔːɹ ɛɡzˈæmpəl, ðɪ ˈɑːksaɪdz ʌv ˌæljʊmˈɪniəm, zˈɪŋk, tˈɪn, ænd lˈiːd ɹɪˈækt wɪððɪ ˈælkəlˌaɪ mˈɛɾəl haɪdɹˈɑːksaɪdz tə ɡˈɪv ɐlˈuːmᵻnˌeɪts, zˈɪŋkeɪts, stˈæneɪts, ænd plˈʌmbeɪts.