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