Question

Write any two advantages of physical changes.
​

Answer 1

Answer:

An example of a physical change is the process of tempering steel to form a knife blade. A steel blank is repeatedly heated and hammered which changes the hardness of the steel, its flexibility and its ability to maintain a sharp edge. (I)They can be reversible.

hope it helps

keep smiling...

Answer 2

Answer:

An example of a physical change is the process of tempering steel to form a knife blade. A steel blank is repeatedly heated and hammered which changes the hardness of the steel, its flexibility and its ability to maintain a sharp edge. (I)They can be reversible