German chemists made a replica of a trophy the size of one molecule.
68
Cold water weighs more than hot water.
93
Iron weighs more after it rusts.
16
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Pure water (H2O) does not conduct electricity on its own.
46
Balsa wood is classified as a hard wood!
41
Nylon is made from coal and petroleum.
42
