Combustion is a chemical change. Justify the statement with 3 examples including chemical equation.
Answers
Answer:
Combustion is a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame. 2. Setting the substance on fire, would cause it to create a new substance. ... Reverse of combustion is not possible,therefore it is a chemical change.
Complete answer:
The process of combustion is referred to the process of burning the substance in the presence of oxygen. The burning of paper is considered to be a combustion reaction as it involves the chemical change in the substance. This is because when we burn a paper it undergoes the combustion reaction and during the combustion state of the substance it changes from its solid state or liquid state to gaseous state. So the burning of paper is considered as a chemical change as the paper after burning changes into ashes and fumes of gases evolve. On burning paper the white paper changes into a brownish black colour of ashes by evolving some gases.
When the reactants are subjected to undergo chemical reaction for the formation of products, so the reaction will occur either by absorbing the energy or by releasing the energy by forming the product.