Class 8 chapter 4 NCERT science keywords solutions

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Ncert keywords
Chapter = 4 
MATERIAL : METAL AND NON-METELS










KEYWORDS ⤵️








▶️ATOM :-  The smallest unit of an element is called an Atom.



▶️CONDUCTER :- The meterial which allow heat and electricity to pass through them are called Conductor.



▶️ DISPLACEMENT REACTION :- A more reactive metal can replaces a less reactive metal,but a less reactive metal cannot save a more reactive metal is called Displacement Reaction.




▶️ DUCTILITY:- The property of metel by which it can be drawn into wires is called Ductility.





▶️ ELEMENT :- A pure substance made up of same atom is called Element.
                    For example :- Gold iron...etc




▶️ MALLEABILITY :- The property of metals by which they can be beaten into thin sheets is called Malleability.





▶️ METALS :- The meterial which possess the characteristics of being hard,shiny, malleable, ductile, fusible.....etc are termed as metals. 
                         For example :- iron, silver, copper.....etc.








▶️Matalloids :- Element showing            
  properties of both metals and               non-metals are called Matalloids.





▶️ Sonorous :- Metals produce ringing sound when hit on other object because they are Sonorous











CHAPTER 1 KEYWORDS SOLUTIONS
-http://empoweringknowledge1.blogspot.com/2020/06/keywords-chapter-1-ncert-class-8.html


CHAPTER 2 KEYWORDS SOLUTIONS
-http://empoweringknowledge1.blogspot.com/2020/06/class-8-ncert-science-book-chapter-2.html


CHAPTER 3 KEYWORDS SOLUTIONS
-http://empoweringknowledge1.blogspot.com/2020/06/Keywords%20chapter%203.html





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