If the chemical sodium is dropped into water it will immediately and violently explode.
67
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
One cubic foot of gold weighs more than 1,200 pounds!
78
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The smell of freshly cut grass is actually a plant distress call.
31
Diamonds can be shattered with a hammer.
-104