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Bio chapter2

QuestionAnswer
Matter Anything with mass & takes up space
Element Cannot be broken down
Protons Positive charge
Neutrons Neutral charge
Electrons negative charge
Isotopes Same# of neutrons, different# of electrons
chemical bonds between valence electrons of different atoms
Covalent bonds Valence electrons are shared by two atoms
non polar bonds equal shared electrons
polar bonds one electron has greater electronegativity than another
Ionic bonds electrons transfered between atoms
Catalysts reduce amount of activation energy needed
oxidation reactant looses one or more electrons and becomes more positive
reduction reactant gains one or more electrons and becomes more negative
solute being disolved
solvent doing disolving
bufferes minimize changes in pH
Created by: marren
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