How is energy involved in a chemical changes and physical changes?

Answer 1

Energy can be absorbed or released in a chemical or physical change, it is not destroyed or created. It simply assumes a different form. This is the law of conservation of energy. Accounting for all the energy present before and after a change is not a simple process. But scientists who have done such experimentation are confident that the total amount of energy remains the same.

Answer 2

cause energy change chemical.

when a person do some vigorous exercise his enery is not lost or not increase but his energy changes from one form to another

when a person lift a very big weight he is tired because of his energy canged from one form to another

our energy is not destroyed and no increase but its only changed the form.

Answer 3

Energy plays a huge role in the process of physical change. Let's take H2O or water as an example. There are three different types of physical palces. Solid, Liquid, and Gas. With H2O, energy makes the molecules speed up to create ice. They then slow down to create a liquid and then even slower when becoming vapor. Energy is what gets the molecules to move around at various velocities.

Answer 4

Energy can take several different forms, such as heat or light. Sometimes heat can provide enough energy to cause a physical change, as in the melting of ice, and sometimes heat provides enough energy to cause a chemical change, as in the decomposition of water vapor to form oxygen gas and hydrogen gas. Although energy can be absorbed or released in a change, it is not destroyed or created. It simply assumes a different form.

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