Chemical changes, or reactions, result in the formation of new substances when bonds are. formed and/or broken. Some relatively simple but common types of chemical reactions are. illustrated in this experiment. Examples and descriptions of each type appear below.
Water boils when it reaches 212 degrees Fahrenheit. Water at a high altitude (for example, in a town in the mountains) doesnât have to get as hot in order to boil. In fact, water doesnât have to boil in order to turn from a liquid to a gas! For example, water at the surface of a lake can evaporate, or change to water vapor when heated by the sun! Sources & links.
To boil water i.e to form vapours from water,we need to break hydrogen bonds existing among the molecules of water which is done by heating at some temperature i.e by providing sufficient thermal energy.So it is concluded that water boils at some temperature this is because this temperature overcomes the intermolecular hydrogen bonding which exists among different molecules of water.