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32 terms

Atomic Nature of Matter (Glencoe)

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chemical symbol
an abbreviated way to write the name of an element
nucleus
positively charged center of an atom
electron
negatively charged particles that move around the nucleus of an atom
proton
atomic particle with a positive charge, found in nucleus
neutron
an atomic particle with no charge, found in nucleus
atomic number
the number of protons in the nucleus
electron cloud
the region forned by electrons
quark
particle that makes up protons and neutrons
mass number
the total number of protons and neutrons in the nucleus
isotope
any of two or more atoms of the same element with a different number of neutrons
average atomic mass
average mass of the mixture of isotopes
periodic table
a table of the elements arranged according to repeated changes in properties
group
a vertical row in the periodic table
period
a horizontal row in the periodic table
Al
aluminum
Ca
calcium
C
carbon
Cl
chlorine
Cu
copper
F
Fluorine
Au
gold
He
helium
H
hydrogen
I
iodine
Fe
iron
Mg
magnesium
Hg
mercury
N
nitrogen
O
oxygen
K
potassium
Ag
silver
Na
sodium