The only letter not appearing on the Periodic Table is the letter "J".
180
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Sound travels fifteen times faster through steel than through air.
134
Most dust particles in your house come from dead skin.
48
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Cold water weighs more than hot water.
93
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39