Question

Find whether combustion supports physical or chemical property?

Answer 1

When two or more substances are reacted with each other produces a new product which are desirable. This change can be known as chemical reaction. The chemical reaction is associated with two types of changes like physical property and chemical property. Combustion is the reaction of alkanes in the presence of oxygen associated with the chemical property.

Complete answer:
Alkanes are known as saturated hydrocarbons consisting of only carbon and hydrogen atoms. Due to the inertness of alkanes these do not readily participate in many chemical reactions. But alkanes react with the oxygen gas in the presence of the atmosphere and undergo a chemical change.
This chemical change is known as combustion. Combustion is a process of treating saturated hydrocarbons with oxygen gas that leads to the formation of carbon dioxide and water vapor. As the energy is released in this process. This process is known as an exothermic reaction.
Let us consider a simple alkane methane with the molecular formula of $C{H_4}$ . It reacts with one mole of oxygen gas to produce one mole of carbon dioxide and one mole of water vapor. The chemical reaction will be as follows:
$C{H_4} + {O_2} \to C{O_2} + {H_2}O + \Delta$
There is a change associated with the chemical property as new substances were formed.
Combustion supports a chemical property.

Note:
As the bonds between the carbon and hydrogen, and oxygen-oxygen bonds were broken, it led to the formation of stronger Carbon-oxygen bonds. Thus, energy is released in this process. The important application of combustion is that the engine of the rocket works by this combustion process.