Examples: Change in State: Melting of ice into water and freezing of water into ice are physical changes because the chemical composition of water (H₂O) remains unchanged. Changes in Shape or ...

This is known as a chemical change. The other kind of change in chemistry is a physical change, which is when a substance changes without becoming a new chemical. These physical changes are often ...

DEMENTIA can cause a number of physical changes in a person – but some of these changes could appear years before a diagnosis ...