The rarest naturally occurring element is Astatine, the rarest naturally occurring element. Estimated less than 30 grams in Earth’s entire crust at any given time. That’s about the weight of a slice of bread.
Water can boil and freeze at the same time at its “triple point” (0.01°C at specific pressure).
The letter J is the only letter not to appear in the periodic table.
Osmium is the densest naturally occurring element – a basketball-sized sphere would weigh about 1,700 pounds.
If all the Gold can be extracted from the world’s oceans, There would be nine pounds of Ag per person. That’s enough gold to fill almost two Empire State Buildings!
Copper- Cu and Gold- Au are the only two naturally colored metals. Most of the rest are silverish.
Everything contains almost entirely of empty space. If an atom were the size of the earth, the nucleus would be only a few city blocks.
Lightning produces Ozone. This is what causes the clean, crisp smell before and after a thunderstorm.