The attraction between the charged metal and water ions will rapidly increase the surface area, causing an exponential increase of ionisation.
ðɪ ɐtɹˈækʃən bᵻtwˌiːn ðə tʃˈɑːɹdʒd mˈɛɾəl ænd wˈɔːɾɚɹ ˈaɪɑːnz wɪl ɹˈæpɪdli ˈɪŋkɹiːs ðə sˈɜːfɪs ˈɛɹiə, kˈɔːzɪŋ ɐn ˌɛkspənˈɛnʃəl ˈɪŋkɹiːs ʌv ˌaɪənəzˈeɪʃən.