Physical and chemical changes

by:Cody Youngblood

PHYSICAL PROPERTIES

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

EXAMPLES:

  • Color and shape
  • length and mass
  • Volume and density (D=M/V)

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PHYSICAL CHANGES

The physical properties of a substance change but the identity of the substance dose not change.


EXAMPLES:

  • Changing from one state of matter to the next
  • Melting 0 degrees c,and boiling point 100 degrees c.
  • Slicing bread,mowing lawn,melting ice

CHEMICAL PROPERTIES

Any charcteristics that give a subtance the abilty to under go a change that results in a new subtance.

EXAMPLES:

  • Flammabilty
  • Reacts with oxygen
  • reacts with light
  • reacts with water

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before

CHEMICAL CHANGE

A change in the identy of a subtance due to the chemical properties of a subtance.

(You have a new subtance)(is it reversable)

EXAMPLES:

  • Flammabilty
  • Reacts with oxygen
  • heat and light
  • electricty

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After