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physical change is a temporary change while chemical change is a permanent change. Justify

Asked by 3rd September 2008, 11:43 PM
Answered by Expert

A change in some quantity of matter is said to be a physical change if there is no change in the chemical make-up of the matter

Examples of Physical Changes

  • Change of state (such as from solid to liquid or from gas to liquid)
  • Absorption of water into a towel

Crumpling a piece of paper

A chemical change is a process in which reactants are changed into one or more different products

examples of chemical changes are:

  • Burning a log of wood.
  • Mixing an acid with a base, producing water and a salt.
  • Photosynthesis - a process in which carbon dioxide and water are changed into sugars by plants
Answered by Expert 5th September 2008, 12:04 AM
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