You may not be aware of it, but matter is constantly changing. There are two types of changes: physical changes and chemical changes.

Video segment. Assistance may be required. Watch this video for a brief introduction on physical and chemical changes.

Source: Physical and Chemical Changes, aliviahalverson, YouTube

The chart below summarizes the differences between physical and chemical changes.

Physical Change
Chemical Change
  • alters the form or appearance but does not result in the formation of a new substance
  • involves change in size, shape or state

    • Examples:

    • freezing
    • melting
    • cutting
  • results in the formation of new chemical substances
  • involves making or breaking of bonds between atoms

    • Examples:

    • rusting
    • burning
    • cooking

Check your understanding. Let's see what you have learned.