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Unit 4 Section C Vocabulary
Acids in the Atmosphere
12
Chemistry
10th Grade
07/20/2012

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Term
acid rain
Definition
fog, sleet, snow, or rain with a pH lower than about 5.6 due to dissolved gases such as SO2, SO3, and NO2
Term
neutral solution
Definition
a water solution in which H+ (H3O+) and OH- concentrations are equal: pH = 7 at 25 degrees C
Term
acidic solution
Definition
an aqueous solution with a pH <7; it turns litmus from blue to red
Term
basic solution
Definition
an aqueous solution with a pH > 7; the solution turns litmus from red to blue
Term
molar concentration or molarity (M)
Definition
the concentration determined by dividing the total moles of solute by the solution volume (expressed in liter)
Term
ionize
Definition
to become converted to ions
Term
strong acid
Definition
an acid that fully ionizes in solution to liberate H+ (H3O+); no molecular form of the acid remains
Term
strong base
Definition
a base that fully liberates OH- in solution
Term
weak acid
Definition
a base that does not fully liberate OH- in solution but remains primarily in molecular form
Term
reversible reaction
Definition
a chemical reaction in which products form reactants at the same time that reactants form products
Term
dynamic equilibrium
Definition
the point in a reversible reaction where the rate of products forming from reactants is equal to the rate of reactants forming from products
Term
buffer
Definition
a substance or combination of dissolved substances capable of resisting changes in pH when limited quantities of either acid or base are added
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