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Chemistry Unit 7

TermDefinition
Valence Electrons Outermost electrons that determine reactivity of an element
Bonds Force that hold atoms together in a compound. Simultaneous attraction of valence electrons. Most atoms want a stable octet or 8 in the outer shell. Except H, H3m Li, and B3
Making a Bond Energy is released; Potential energy decrease; stability increases. Bonded atoms are more stable with less energy
Breaking a Bond Energy is absorbed increasing potential energy. Stability decreases. Unbounded atoms are less stable with more energy
Ionic Bonds Transfer of e- from one atom to another; results in formation ions; positive cation and negative anion. Formed between metal and nonmetals/polyatomic ions
Ionic Solids High boiling and melting points. Just ions. Crystaline as solids; brittle; shatter and don't bend. Conduct electricity in liquid and aqueous phase
Electronegativity difference Equal to or greater than 1.7
Electronegativity An atom's ability to attract electrons
Created by: user-1866784
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