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Atom and Purity

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  • What is the center of atom ?
    Nucleus
  • how many percent sodium chloride in seawater ?
    68%
  • how many percent salts is seawater ?
    3.5%
  • Elements that only consist of same atoms we called as ?
    Pure elements
  • How many carrat of pure gold ?
    24
  • what is mean translucent ?
    light through
  • pure silver has purity ... %
    92.5%
  • Who discovered electron ?
    J.J Thomson
  • What are atoms ?
    Smallest molecules
  • Who discovered proton ?
    Ernest Rutherford
  • 18 carat of gold has purity of ... ?
    75%
  • Who discovered neutron ?
    James Chandwick
  • which element mixed with carbon in diamond makes them blue ?
    Boron
  • the rarest diamond is .... colour
    green
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