• Question: What is an atom?

    Asked by 322bera39 to Colin, John, Kevin, Shikha, Triona on 10 Nov 2014. This question was also asked by chalice242, 449bera43.
    • Photo: Shikha Sharma

      Shikha Sharma answered on 10 Nov 2014:

      Hi 322bera39,
      Atoms are the basic building blocks of everything that exists. The Greek philosopher- Democritus was the first person who used the word “atomos” meaning “indivisible” to describe the ultimate building blocks of matter.
      Atoms are composed of three particles called protons, electrons and neutrons. Protons carry a positive electrical charge, electrons carry a negative electrical charge and neutrons carry no electrical charge at all. Atoms of each element are distinguished from each other by the number of protons that are present in their nucleus.
      🙂

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