Well that escalated quickly!
Those of you who are familiar with the left side of the periodic table can probably predict how this experiment will end.
For those of you unfamiliar with Alkali metals like sodium, lithium, and potassium, just know that they tend to react violently with water.
The farther down the column you go, the bigger the bang.
Watch this video and remember that sodium is only the second metal in the Alkali family.