The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Pure water (H2O) does not conduct electricity on its own.
46
A ball of glass will bounce higher than a ball made of rubber.
73
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Sound travels about 4 times faster in water than in air.
408
Hot water can freeze faster than cold water.
181