Question

_______ changes are usually reversible in nature.

Answer 1

Physical Changes:

• A change that alters some specific physical property of the matter, like its state, texture, magnetic or electrical conditions or colour, without causing any change in the composition of its molecules, is called physical change, provided it gets reversed if the cause producing the change is
  removed.
• The change is temporary and reversible: It means the change can be reversed by altering the causes which produce the change.

Example: The water formed from ice can be changed back to the ice by placing it in a freezing mixture (the mixture of ice and common salt).

Hence, physical changes are usually reversible in nature.