Reactant molecules collides when they create chemical reactions
Step-by-step explanation:
In a chemical reaction, there is the chemical transformation of chemical substances. There are changes in positions of electrons. Either there will be a formation of bonds between atoms or breaking of bonds between atoms.
To initiate a chemical reaction, molecules must collide with required amount of energy to break the chemical bonds. With the rise in temperature, molecules move with high speed and vigorously. It increases the likelihood of bond breakage on collision.