What is an atom?
It is a building block of all matter.
An atom is made of a proton, neutron and electron.
http://www.youtube.com/watch?v=yqLlgIaz1L0
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What is an atom?
It is a building block of all matter.
An atom is made of a proton, neutron and electron.
http://www.youtube.com/watch?v=yqLlgIaz1L0