Physical & Chemical Changes

By Kailey Shafer

Physical Properties

Any characteristic of a material that can be observed or measured without changing the identity of the material.



Examples:



  • Color and Shape
  • Lenght and Mass
  • Volume and Density (CD=M/V)

Physical Changes

The Physical Property of a substance change, but the identity of the substance does not change.



Examples:



  • Changing from one state of matter to the next.
  • (Ice melts to liquid-liquid boils to steam)
  • Melting o degrees c, and boiling point 100 degrees c
  • slicing bread, melting ice, mowing lawn

Chemical Properties

Any characteristic that gives a substance the ability to undergo a change that results in a new substance.



Examples:



  • Flammability (Ability to burn)
  • Reacts with oxygen (Ability to rust)
  • Reacts with light (Pictures being developed)
  • Reacts with water (Medicine dissolving water)

Chemical Change

A change in the identity of a substance due to the chemical properties of that substance.
(you have a new substance) (is it reversible) NOT


Examples:


  • flammability (fire burning to ash)
  • reacts with oxygen (fruit rotting)
  • Heat and light (vitamins can change exposed to light)
  • Electricity (water can be broken down with electrisity)