I'd like to know what the phase rule is and how it's used to figure out the number of degrees of freedom. I don't really understand why human blood is a buffer solution. General Interest Topics 1. Why salt causes snow to melt and cars to rust. Why acid rain is such a danger to living creatures in lakes and rivers.
Some people think hot water freezes faster than cold water.
Why ethyl alcohol is drinkable and methyl alcohol is poisonous.