This one is for all you salty people out there!
In the third Period, first Group, Sodium is in a lot of compounds we see every day, such as table salt, baking soda, and compounds that help the nervous system like sodium borate.
When mixed with water, Sodium creates a huge exothermic reaction, releasing Hydrogen gas at high speeds due to proton repulsion.
In 2013, a teen chugged a bottle of soy sauce and went into a coma because of a sodium overdose. He turned out all right, luckily!
Most street lamps emit their yellow glow because of a combination of neon (our last element) and sodium.
Pure sodium at room temperature is a solid, but is extremely soft, you can cut it with an knife. Just make sure the knife is dry first!!