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20 Cards in this Set
- Front
- Back
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the particles found in an atom's nucleus
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protons & neutrons
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double bond
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two pairs of electrons shared between two atoms
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valence electrons
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electrons in the outer-most shell, involved in bonding
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atom
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the smallest part of an element
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family/group
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up and down columns on the periodic table
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compound
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two or more atoms chemically put together
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element
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the simplest pure substance that cannot be broken down into any further substance
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period
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rows (side to side) on the periodic table
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atomic number
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the number of protons in the nucleus
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electrons
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what gives an atom its volume
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what is group 1 called?
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alkali metals
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what is group 2 called?
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alkaline earth metals
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what is group 17 called?
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halogens
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what is group 18 called?
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noble gases
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what group contains highly reactive nonmetals? (become stable by gaining one electron)
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group 17
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group 18 are..?
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most stable elements, not highly to react
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ionic bond
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the attraction between oppositely charged ions
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covalent bond
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a chemical bond formed when two atoms share electrons.
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nonpolar
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when electrons are shared equally
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polar
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when electrons are shared unequally
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