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Quiz 1a 1b & 2

QuestionAnswer
The smalles possible unit of a covalent compound is a molecule
in the reaction a + b -> ab, which of the following will not increase the rate? dectreasing the temperature
which of the following ph's corresponds to a weakly acidic solution 5.3
a chemical bond formed when a pair of electrons is unequally shared is a ______________ bond polar covalent
the h3o ion is called the___________ ion hydronium
a bronsted lowry acid is a substance which donates protons to other substances
for the following reaction, increasing the pressure will cause the equilibrium_________ (2SO2 + O2 <-> 2SO3 + heat) shift to the right, towards products
one characteristic of a cation is it has more protons than electrons
when acids and bases react the product other than water is a salt
which of the following statements is correct in an acidic solution, H3O > 10-7; OH < 10-7
the term which best describes the crystalline substance that results when a large number of metal atoms transfer electrons to a large number of non metal atoms is ionic solid
a process or reaction which takes in heat from the surroundings is said to be endothermic
a chemical bond formed when a pair of electrons is equally shared is a _______________ bond nonpolar covalent
when an atom donates an electron, that electron is acquired by another atom which becomes an anion
an atom with 3 valence electron will most likely lose three electrons
which statement is correct for pure water contains equal amounts of hydroxide and hydronium ions
main group elements that are non metals usually ________ one or more electrons to form ___________ which have a ______ charge gain, anions, negative
at 25C the value of Kw is 1.00 x 10-14
acetic acid is a weak acid in water because it is only slightly dissociated into ions
main group elements that are metals usually _______ one or more electrons to form ________ which have a ________ charge lose, cations, positive
a process or reaction which releases heat to the surroundings is said to be exothermic
a small negatively charged particle formed when an atom gains one or more electrons is called a anion
which change to this reaction system would cause the equilibrium to shift to the right (N2 + 3H2 <-> 2NH3 + heat) lowering the temperature
if the H+ of a water sample is 1 x 10-4 M, the pH of the sample is _______ and the sample is _______ 4, acidic
when a reaction system is at equilibrium the rates of the reaction in the forward and reverse directions are exactly equal
if the H+ of a water sample is 1 x 10-4 M, the OH- is 1 x10-10 M
the function of a catalyst in a reacton system is to increase the rate of the reaction
Created by: Katiejean