SELECT * FROM question_mgmt as q WHERE id=4364 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=367 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Materials: Metals and Non-Metals some properties are listed in the following table

Question:

Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties.

Properties Metals Non-Metals

  1.  Appearance
  2.  Hardness
  3.  Malleability
  4.  Ductility
  5.  Heat Conduction
  6. Conduction of Electricity

    

 

Answer:

  1. Metals are bright or lustrous in appearance whereas non- metals are dull.
  2. Generally metals are hard and non- metals are soft.
  3. Property of metal by which they can be beaten into thin sheets which is known as malleability whereas non- metals does not show this property.
  4. Property of metals by which they can be drawn into wires are called as ductility whereas non- metal does not show this property.
  5. Conductors are those from which heat and electricity can pass through easily. Metals are good conductor of heat whereas non- metals are poor conductor of heat.
  6. Metals are good conductor of electricity whereas non- metals are poor or bad conductor of electricity.


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