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Atom
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Smallest unit into which matter can be divided, while still
maintaining its properties
Smallest piece of an element that still represents that element
-
+
-
+
+
+
-
-
Proton
Neutron
Electron
Charge
+
0
-
Location
Nucleus
Nucleus
cloud
Mass
YES
YES
tiny
Atoms have an overall neutral charge
because
PROTONS (+) = ELECTRONS (-)
Atomic NUMBER = number of PROTONS = number of ELECTRONS  the
charged particles
Atomic MASS = PROTONS + NEUTRONS  the nucleus
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