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Atomic structure gcse edxcel 9-1
Presentation to be used by students or teachers on chemistry: Atomic structure gcse edxcel 9-1
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ATOMICSTRUCTURE
, Structure of an
atom
Atoms are the smallest neutral part of an
element that can take part in chemical
reactions.
They are made up of electrons together
with heavier subatomic particles called
protons and neutrons
Nucleus and Shells
Every atom has a
central nucleus surrounded
by electrons arranged in areas called shells,
and the nucleus would be very small
compared to the whole atom:
Since electrons are even smaller most of an
atom is empty space
The diameter of a nucleus can be 100,000
times less than the diameter of an atom
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