Pumice is the only rock that floats on water.
14
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Cold water weighs more than hot water.
93
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Diamonds can be shattered with a hammer.
-104
If the chemical sodium is dropped into water it will immediately and violently explode.
67