A temperature change in a reaction indicates <u>occurrence of chemical change</u>.
<h2>Explanation:</h2>
In chemistry, two types of reaction are always witnessed. One is physical reaction whereas the other is chemical reaction. In a chemical reaction, there is an adjustment in the organization of the substances whereas in a physical change there is a distinction in the appearance, smell, or straightforward showcase of an example of issue without an adjustment in structure.
At the point when bonds are broken and new ones are shaped, a compound change happens. The following happenings indicate the chemical change:
A gas is composed of a large number of particles called molecules (whether monatomic or polyatomic) that are in constant random motion.
Because the distance between gas molecules is much greater than the size of the molecules, the volume of the molecules is negligible.
Intermolecular interactions, whether repulsive or attractive, are so weak that they are also negligible.
Gas molecules collide with one another and with the walls of the container, but these collisions are perfectly elastic; that is, they do not change the average kinetic energy of the molecules.
The average kinetic energy of the molecules of any gas depends on only the temperature, and at a given temperature, all gaseous molecules have exactly the same average kinetic energy.