Alkali metals react in water because of coulomb explosions:<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=xMfQSV4ygHE" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=xMfQSV4ygHE</a><p>The explanation was only discovered this year.