When an alkali metal is dropped into water, it produces an explosion, of which there are two separate stages.
wˌɛn ɐn ˈælkəlˌaɪ mˈɛɾəl ɪz dɹˈɑːpt ˌɪntʊ wˈɔːɾɚ, ɪt pɹədˈuːsᵻz ɐn ɛksplˈoʊʒən, ʌvwˈɪtʃ ðɛɹˌɑːɹ tˈuː sˈɛpɹət stˈeɪdʒᵻz.