10 conceptual question from chapter metal and nonmetal
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- what do you mean by element?
- Define metal with repect to their physical properties and chemical properties?
- what is the most abundant metal and followed by what?
- Name two highly reactive metal?
- Name 2 less reactive metals?
- Why did gold and silver are found in native state?
- Why did sodium and potassium are found in compound state?
- How many elements are known at present?
- On what basis elements are classified into two categories?
What do you mean by non metals with respect to their physical and chemical properties?
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