Here is a tutorial on how to find out your own mobile number when you forget with codes on Aircel, Airtel, Uninor, Relinace, vodafone, Idea, Virgin, Docomo.
A. Burning a piece of paper is technically called combustion. It represents a chemical reaction whereby the carbon compounds in the paper are oxidized into different chemicals like carbon dioxide and water vapor. This is a chemical change.
Chemical energy is a form of potential energy that can be stored in the bonds of chemical compounds. As soon as a chemical reaction takes place, the bonds among molecules break and release or absorb this energy, usually in the form of heat.If a reaction releases heat, it is exothermic. Wood, oil, coal and other forms of fossil fuels are burned inside combustion engines to convert chemical energy into heat or motion. 2  These fuels are also burned to produce electrical energy, light and mechanical energy depending on the device and the purpose of use.