Physical changes are changes that only change the appearance of an object, but not the type of matter. For example, if a metal bike rusts the bike will still remain a solid. That is a physical change.
I think you mean physical. And it's when the appearance of something changes.
Physical.
cabra and calgha and malia
Force.
The study of properties of matter and how it changes is called chemistry.
Chemistry - the study of the properties of matter and how matter changes
laws and principle governing changes of matter
Matter changes state because of pressure and temperature.
chemistry
how temperature can bring about changes in the state of matter
You can increase your stamina by taking part ina phisycal movement.
any substances have a meaning