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GMS List 4
Goochland Middle School List 4
10
Science
6th Grade
12/05/2007

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Cards

Term
atom
Definition
the smallest particle of matter; the smallest unit of an elament that retains the properties of that elament.
Term
nucleus
Definition
the tiny central core of an atom.
Term
electron
Definition
the negative particle which rotates around the nucleus of an atom;(indicated by a negative symbol,-)
Term
neutron
Definition
the neutral particle in the nucleus of an atom, has no charge
Term
protron
Definition

the positively charged particle in the nucleus of an atom,(indicated by the plus symbol,+)

Term
ion
Definition
a positively or negatively charged atom because the atom has gained or lost electrons
Term
isotope
Definition
an atom with a differennt number of neutrons.
Term
Dmitri Mendeleev
Definition
Russian chemist and inventor; creator of the periodic table of elements that had yet to be discovered.
Term

atomic number

Definition
equals the number of protons an atom contains.
Term
atomic mass
Definition
equals the average of the elements isotopes.
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