justnogrlzana justnogrlzana
  • 23-10-2016
  • Chemistry
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Atoms are matter of what

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lilrae456
lilrae456 lilrae456
  • 24-10-2016
The nucleus is the positively charged centre of an atom and contains most of its mass. It is composed of protons, which have a positive charge, and neutrons, which have no charge
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