Respuesta :
Answer:
A Chemical reaction involves changes in energy in the form of absorbtion and release of heat due to the formation and breakdown of chemical bonds. A chemical reaction is categoried as endothermic reaction in which heat energy is take in or absorbed and exothermic reaction in which energy is released.
A model can be created by following below details:
- Take a beaker and put 10 milliliters of vinegar in it.
- Place a thermometer in the beaker and measure the initial temperature.
- Then add half teaspoon of baking soda, that results into decreasing in the temperature.
So, the decrease in temperature shows it is an endothermic reaction in which heat energy is absorbed.
Energy change in the reaction has been stored in the products and the reactants. The change in the reactant to product results in a change in energy.
According to the law of conservation of energy, energy can neither be created nor destroyed in a chemical reaction. The chemical reaction has been resulted in the energy change by the endothermic and exothermic reactions.
The project model for energy change can be:
- The general model for an endothermic reaction:
Reactant + Energy = Products.
The ice cube has been placed in a beaker. It has been consisted of the stored potential energy. WIth the application of heat energy there has been the conversion of ice cubes to the water, and the potential energy of the ice cubes has been converted to the kinetic energy of the moving liquid particles.
- The general model for the exothermic reaction:
Reactant = Product + Energy
The model has consisted of matching the light with a matchstick. The chemical energy of the stored matchstick has been converted to light and heat energy.
For more information about the energy change, refer to the link:
https://brainly.com/question/7288867
