Question

Givivng one example of each kind, show that a change in energy takes place when a physical or a chemical change occurs.

Answer 1

Answer:

Physical Change - When solid dry ice vaporises, the carbon dioxide molecules absorbs energy. Meanwhile, when liquid water vaporises it

Examples of physical change include changes in the size or shape of matter. Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting releases energy.

 Chemical change - When a paper is burnt it releases energy in the form of heat and light.