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16 Cards in this Set
- Front
- Back
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Metals |
found on the right side of the periodic table, they lose electrons to form positive ions (cations), and are shiny, solid, malleable, ductile, and good heat/electrical conductors. |
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Metalloids |
share properties of metals and nonmetals. |
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Nonmetals |
round on the right side of the periodic table, they gain electrons to form negative ions (anions), and all these elements exist in all three states of matter: solid, liquid, and gas. |
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Period |
are horizontal rows and have the same number of energy levels in elements. |
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Group |
are vertical columns that have similar properties, and the same number of valence electrons. |
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Atomic Number |
number of protons in an atom. |
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Atomic Mass |
mass of an atom, how naturally occurring isotopes of an atom in nature (protons + neutrons). |
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Atomic Radii |
size of the atom, measured from the nucleus to the outer electron level.
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Metallic Character |
how strong the characteristics of a metal are. |
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Nonmetallic Character |
how strong the characteristics of a nonmetal are. |
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Electron Affinity |
how likely a neutral atom will gain an electron. |
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Ionization Energy |
amount of energy an atom must absorb in order to get rid of an electron. |
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Alkali Metals |
most active metals, stored under oil, don't exist as free elements. |
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Hydrogen |
most abundant element in the universe, nonmetal on left side of periodic table, gas, one valence electron. |
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Halogens |
most active nonmetals. |
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Noble Gases |
all gases, relatively inactive, contain 8 valence electrons. |
