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Study Resources (Chemistry)

21) The smallest possible unit of a covalent compound is a(an) A) atom. B) cation. C) formula unit. D) molecule. E) polyatomic ion. 22) The covalent bonding model is most useful in describing which of the following compounds? A) CoCl2 B) MgCl2 C) NiCl2 D) SCl2 E) none of the above 23) Which property could describe a covalent compound? A) It conducts electricity.
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60) The formula for sulfur hexabromide is ________. A) SF6 B) SBr6 C) SBr4 D) SiBr6 E) SiB6 61) The formula for carbon disulfide is ________. A) CS2 B) C2S C) CSi2 D) CaS2 E) (CS)2 62) If SiCl4 is named as a covalent compound, what would it be called? A) silicon chloride B) chlorosilicate C) silicon tetrachloride D) sulfur chloride E) sulfur tetrachloride 63) The compound BrF3.
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31) Volume and pressure are ________ proportional. A) directly B) inversely C) all of the above D) none of the above 32) What would be the new pressure if a 400 mL gas sample at 380 mm Hg is expanded to 800 mL with no change in temperature? A) 190 mm Hg B) 380 mm Hg C) 570.
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50) A bond where the electrons are shared unequally is called a(an) ________ bond. A) polar covalent B) coordinate covalent C) nonpolar covalent D) ionic E) none of the above 51) Consider the molecule SiCl4. The electronegativity values for Si and Cl are 1.8 and 3.0, respectively. Based on these values and on consideration of molecular.
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Match the following.   74) pressure A) the measure of a liquid's resistance to spreading out. 75) volume 8.3B) the temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure 76) viscosity 8.4C) the measure of a liquid's resistance to flow. 77) surface tension E) having atoms covalently bonded together in a large 3-dimensional array 78) network.
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40) The water molecule has a ________ geometry because its central atom has ________ bonds and ________ lone pairs of electrons. A) bent; two; two B) linear; two; two C) pyramidal; three; one D) tetrahedral; four; zero E) planar triangular; three; one 41) Draw the Lewis structure for CCl4. What is the molecular geometry of this.
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69) What is the name of K2S? A) dipotassium sulfide B) potassium disulfide C) potassium(II) sulfide D) potassium sulfide E) none of the above 70) The name of the compound with formula NaMnO4 is A) sodium magnesium oxide. B) sodium magnesium tetraoxide. C) sodium manganate. D) sodium permanganate. E) sodium manganese tetraoxide. 71) The formula for ammonium hydroxide is ________. A) OHNH4 B) NH4NO3 C).
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39) The name of S2- is A) sulfur. B) sulfate ion. C) sulfite ion. D) sulfide ion. E) sulfurous ion. 40) The name of Cu2+ is ________ ion or ________ ion. A) copper; cupric B) copper(i); cupric C) copper(II); cupric D) copper(I); cuprous E) copper(II); cuprous 41) The correct Roman numeral for the chromium ion in the compound CrCl3 is A) I B) II C).
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11) Which process is exothermic? A) gas → liquid B) liquid → gas C) solid → liquid D) solid → gas E) none of the above 12) The process of sublimation is ________ and involves a(an) ________ in entropy. A) exothermic; increase B) exothermic; decrease C) endothermic; increase D) endothermic; decrease E) endothermic; no change 13) Which process is endothermic? A) Water condenses.
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21) In general, the solubility of ________ in water decreases as temperature increases. A) gases B) solids C) liquids D) none of these E) all of these 22) The solubility of nitrogen in water exposed to the atmosphere, where the partial pressure of nitrogen is 593 mm, is 5.3 × 10-4 M. At the same temperature,.
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21) A reaction that is spontaneous can be described as A) proceeding in both the forward and reverse directions. B) having the same rate in both the forward and reverse directions. C) releasing heat to the surroundings. D) proceeding without external influence once it has begun. E) increasing in disorder. 22) Entropy can be defined as A).
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  1) Which description best fits a gas? A) definite shape and volume; strong intermolecular attractions B) definite volume; shape of container; moderate intermolecular attractions C) definite volume; shape of container; weak intermolecular attractions D) volume and shape of container; no intermolecular attractions E) volume and shape of container; strong intermolecular attractions 2) Which description best fits.
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59) A formula unit of ammonium sulfate consists of ________ ammonium ions and ________ sulfate ions. A) one; two B) two; one C) two; three D) three; two E) four; four 60) The formula Ca(NO3)2 tells us that one formula unit of this compound is composed of ________ calcium atoms, ________ nitrogen atoms, and ________ oxygen.
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  1) A process or reaction which takes in heat from the surroundings is said to be A) conservative. B) endothermic. C) exothermic. D) isothermal. E) endergonic. 2) A process or reaction which releases heat to the surroundings is said to be A) conservative. B) endothermic. C) exothermic. D) isothermal. E) exergonic. 3) The scientific principle which explains the observation that the amount.
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49) According to Avogadro's Law, the volume of a gas will ________ as the ________ is increased while the ________ are held constant. A) increase; number of moles; pressure and temperature B) decrease; number of moles; pressure and temperature C) increase; temperature; pressure and number of moles D) decrease; pressure; temperature and number of.
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79) potassium sulfide Diff: 1 Section:  3.10 G) H) Fe(OH NaCC 80) sodium acetate Diff: 1 Section:  3.10 I) J) AlP S 81) ammonium acetate Diff: 1 K) Cr Section:  3.10L) (C 82) ammonium carbonate Diff: 1 Section:  3.10 83) aluminum carbonate Diff: 1 Section:  3.10 84) potassium sulfite Diff: 1 Section:  3.10 85) hydrogen chloride Diff: 1 Section:  3.10 86) sodium nitrite Diff: 1 Section:  3.10 87) iron(II) hydroxide Diff: 1 .
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21) The balanced equation for the reaction between aqueous ammonium sulfate and aqueous barium acetate is A) (NH4)2SO4 (aq)  +  Ba(C2H3O2)2 (aq)  →  BaSO4 (s)  +  NH4C2H3O2 (aq). B) (NH4)2SO4 (aq)  +  Ba(C2H3O2)2 (aq)  →  BaSO4 (s)  +  2 NH4C2H3O2 (aq). C) NH4SO4 (aq)  +  BaC2H3O2 (aq)  →  BaSO4 (s)  +  NH4C2H3O2 (aq). D).
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69) List and describe two unique properties of water. Discuss the intermolecular force that causes these unusual properties. 70) A solid compound which has no definite crystalline structure and a poorly defined melting point is referred to as a(an) ________ solid. A) ionic B) molecular C) network covalent D) amorphous E) metallic 71) List the five types.
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21) Which assumption of Kinetic Molecular Theory is not followed when a real gas shows non-ideal behavior? A) Gas molecules move at random with no attractive forces between them. B) The velocity of gas molecules is proportional to their Kelvin temperature. C) The amount of space occupied by a gas is much greater.
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  1) All of the following statements describing solutions are true except A) making a solution involves a physical change. B) solutions are homogeneous. C) the particles in a solution are atomic or molecular in size. D) solutions are colorless. E) solutions are transparent. 2) Which homogeneous mixture is opaque and has particles large enough to be.
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  1) A chemical bond formed between two identical atoms is a(an) ________ bond. A) atomic B) covalent C) hydrogen D) ionic E) molecular 2) A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. A) double; covalent B) double; ionic C) single; covalent D) single; ionic E) triple; covalent 3).
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41) In the reaction energy diagrams shown, reaction A is ________, and it occurs ________ reaction B. A) endergonic; faster than B) exergonic; faster than C) endergonic; slower than D) exergonic; slower than E) exergonic; at the same rate as 42) In the reaction energy diagrams shown, reaction B is ________, and it occurs ________ reaction.
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31) Consider the endothermic reaction: N2 (g)  +  2 H2 (g)  →  N2H4 (l) The entropy change of this reaction is ________ and the enthalpy change is ________, so at a very high temperature, this reaction is probably ________. A) favorable; unfavorable; nonspontaneous B) favorable; unfavorable; spontaneous C) unfavorable; unfavorable; spontaneous D) unfavorable; unfavorable; nonspontaneous E) unfavorable;.
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