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unit 5 flashcards
emanuels unit 5
17
Chemistry
11th Grade
12/15/2008

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Term
compound
Definition
a chemical combination of 2 or more different elements in a fuxed ratio
Term
chemical bond
Definition
the force that holds atoms together
Term
ionic bond
Definition
bond formed by transfering electrons from a metal to a nonmetal
Term
covalent bond
Definition
bond fprmed by sharing electrons nonmetal bonds to nonmetal
Term
oxidation number
Definition
the positive or negative charge of an ion
Term
cation
Definition
positively charged atoms
Term
anions
Definition
negatively charged atoms
Term
positive ions
Definition
form when atoms lose electrons
Term
negative ions
Definition
form whe valance electrons are added to an atom
Term
ionization energy
Definition
easily an atom loses electrons
Term
electron affinity
Definition
how much atraction an atom has for electrons
Term
ion
Definition
a charged particle
Term
polyatomic ion
Definition
an ion made up of two or more elements covalentlybonded
Term
transiyion metal
Definition
one of the elements in columns in 3 through 12 of the periodic table, the area in the periodic.
Term
subscript
Definition
the small characters set below the normal letters or figures
Term
subscript
Definition
the small characters set below the normal letters or figures
Term
conductivity
Definition
measure of the ability of watr to conduct electrical current.It is directly related to the total dissolved substancs in the water.
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