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What are physical changes? Give 5 examples.

Physical Change
 
The chemical composition of a substance does not change.
 
Most changes are reversible
 
No new substances are formed. For example,
Ice → Water → Steam
 

 

Physical change:

  1. Water evaporation and condensation
  2. Glowing of bulb when current flow.
  3. Recycling of plastic
  4. Recycling of papers
  5. Melting of wax
  6. Adding silica in water
  7. Recasting iron from one form to other form
  8. Adding table salt in water
  9. Use of solar energy
  10. Painting of walls

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CHANGES WHICH TAKE PLACE IN THE PHYSICAL LOOK OF AN OBJECT IS CALL PHYSICAL CHANGE.

FOR EG-

1.PAPER CHANGING INTO PLANE

2. CANDLE CHANGING TO WAX

3.SUGAR MIXING IN WATER

4.FOLDING OF PAPER

5.MOULDING OF CLAY

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  1. I am growing.
  2. The water is leaking.
  3.  The rain is poring
  4. The Equpment has been fused.
  5. My broken plant is growing
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Physical  changes  are  those  changes  ,  that  can  be  brought  back  to  its  origial  form.

For  example  -,

  • Streching  of  a  rubber  band
  • Making  of  dough
  • Making  of  forms  in  clay.
  • Conversion  of  ice  into  water.
  • Melting  of  wax
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Changes that can be reversed are called Physical change.

eg.melting of ice 

cutting of paper

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