User blog comment:Blackendedsoul/Hierarchy/@comment-115.241.210.13-20121018132716

Though ice and snow are both made up of water, there is a difference between the two. Snow is nothing but the frozen atmospheric vapour which falls in winters on earth as light flakes whereas ice is simply frozen water. Another difference is that snow fall can be seen only in winters at areas of high altitudes and places near the Polar regions whereas ice can be seen in any season of the year in our refrigerator.

Fire is the chemical reaction scientifically known as combustion. It is where a burning substance is reduced to carbon, carbon dioxide and other gases (smoke), and water. Magma is molten rock, that comes from underneath the Earth's crust. When it erupts from volcanoes it is called lava. 