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Chemistry
Q:
Which one of the following is not a main group element?
A) Na
B) Ba
C) Fe
D) Ga
Q:
What is the top chemical compound produced in the United States?
A) N2
B) NH3
C) CaO
D) H2SO4
Q:
What are the three most abundant elements in the human body?
A) H, C, O
B) H, O, N
C) H, C, N
D) H, C, P
Q:
What are the three most abundant elements in the Earth's crust?
A) H, O, C
B) O, Al, Si
C) O, Si, Fe
D) Al, Si, Fe
Q:
The most acidic oxides of the group 5A elements are oxides of the element ________.
Q:
Aqua regia may be prepared by mixing ________ and ________.
Q:
The charge , n, on the cyclic anion Si6O18n that is found in the mineral beryl is ________.
Q:
The formula of aluminum carbide is ________.
Q:
The number of nonmetals in group 4A of the periodic table is ________.
Q:
The B-H-B bond in B2H6 is a three-________, two-________ bond.
Q:
Elements in group 3A of the periodic table have the valence electron configuration ________.
Q:
Elements in period 2 of the periodic table differ markedly from the heavier elements in the same group due to their especially small ________ and high ________.
Q:
The number of metallic elements in period 3 of the periodic table is ________.
Q:
Main-group elements are those elements in groups ________ through ________ of the periodic table.
Q:
Which one of the following elements can form more than four chemical bonds with other elements?A) CB) NC) OD) As
Q:
Which one of the following compounds exhibits the strongest hydrogen bonding between its molecules?
A) CH3OH
B) CH3F
C) CH3Cl
D) CH3Br
Q:
Which one of the following compounds that contains a Group 6A element is least likely to exist?
A) OF2
B) OF6
C) SF4
D) SF6
Q:
Which one of the following elements forms the most acidic binary oxide?
A) Cs
B) Sn
C) Se
D) Te
Q:
Which one of the following is not a main group element?
A) Rb
B) Sr
C) U
D) Pb
Q:
Which of the following elements exhibits the most metallic character?
A) In
B) Sn
C) Sb
D) Te
Q:
Which of the following elements forms the most ionic binary hydride?
A) K
B) Mg
C) S
D) Cl
Q:
What is the most metallic element of group 3A?
A) Al
B) Ga
C) In
D) Tl
Q:
The two-dimensional layer silicate ion shown in the picture below combines with magnesium and hydroxide ions to form talc. What is the formula and charge of the repeating unit of the silicate ion?A) SiO32-B) Si4O104-C) Si6O156-D) Si18O5028-
Q:
The double-stranded silicate ion shown in the picture below combines with calcium and magnesium to form the mineral tremolite, which is a form of asbestos. What is the formula and charge of the repeating unit of the silicate ion? A) SiO32-
B) Si4O116-
C) Si6O1710-
D) Si12O3012-
Q:
The silicate ion shown in the picture below combines with beryllium and aluminum to form the mineral beryl. What is the formula and charge of the silicate ion? A) Si6O612+
B) Si6O122-
C) Si6O1812-
D) Si6O2424-
Q:
What is the formula and charge of the silicate anion represented by the picture below? A) SiO22-
B) SiO32-
C) SiO44-
D) Si4O128-
Q:
The infinitely extended silicate ion shown in the picture below combines with calcium and magnesium to form the mineral diopside. What is the formula and charge of the repeating unit of the silicate ion? A) SiO32-
B) Si2O64-
C) Si3O108-
D) Si6O2424-
Q:
What is the formula and charge of the silicate anion represented by the picture below? A) SiO32-
B) SiO44-
C) Si2O63-
D) Si2O76-
Q:
The silicate ion shown in the picture below combines with zirconium to form the mineral zircon. What is the formula and charge of the silicate ion? A) SiO32-
B) SiO44-
C) Si4O104-
D) Si4O116-
Q:
Which oxoanion is the weakest base?
A) oxoanion (1)
B) oxoanion (2)
C) oxoanion (3)
D) oxoanion (4)
Q:
Which oxoanion is the strongest base?
A) oxoanion (1)
B) oxoanion (2)
C) oxoanion (3)
D) oxoanion (4)
Q:
Shown below are four oxoanions of sulfur. Small gray spheres represent hydrogen, unshaded spheres represent oxygen, and dotted spheres represent sulfur.Which oxoanion is the strongest acid?A) oxoanion (1)B) oxoanion (2)C) oxoanion (3)D) oxoanion (4)
Q:
Which element indicated on the above periodic table forms a binary oxide with molecular structure (4) shown above?A) element AB) element BC) element CD) element D
Q:
Which element indicated on the above periodic table forms a binary oxide with molecular structure (3) shown above?
A) element A
B) element B
C) element C
D) element D
Q:
Which element indicated on the above periodic table forms a binary oxide with molecular structure (2) shown above?
A) element A
B) element B
C) element C
D) element D
Q:
Which element indicated on the above periodic table forms a binary oxide with molecular structure (1) shown above?A) element AB) element BC) element CD) element D
Q:
Which element indicated on the above periodic table forms a binary hydride with molecular structure (4) shown above?A) element AB) element BC) element CD) element D
Q:
Which element indicated on the above periodic tableforms a binary hydride with molecular structure (3) shown above?
A) element A
B) element B
C) element C
D) element D
Q:
Which element indicated on the above periodic table forms a binary hydride with molecular structure (2) shown above?
A) element A
B) element B
C) element C
D) element D
Q:
Which element indicated on the above periodic table forms a binary hydride with molecular structure (1) shown above?A) element AB) element BC) element CD) element D
Q:
What is the likely formula for the binary compound formed from the elements represented by letters B and D on the periodic table above?A) BDB) B3DC) BD3D) B2D3
Q:
What is the name for the group of elements indicated by the shaded portion of the periodic table?A) alkaline earth metalsB) group 3A elementsC) halogensD) noble gases
Q:
At 25C the elements indicated by the shaded area in the following periodic table are all A) diatomic molecules.
B) gases.
C) liquids.
D) nonmetals that are solids.
Q:
At 25C the elements indicated by the shaded area in the following periodic table are all A) diatomic molecules.
B) gases.
C) liquids.
D) solids.
Q:
At 25C the elements indicated by the shaded area in the following periodic table are all A) diatomic molecules.
B) gases.
C) liquids.
D) solids.
Q:
Which of the elements indicated on the above periodic table forms a common allotrope having molecular structure (3)?
A) element A
B) element B
C) element C
D) element D
Q:
Which of the elements indicated on the above periodic table forms a common allotrope having molecular structure (2)?A) element AB) element BC) element CD) element D
Q:
Which of the elements indicated on the above periodic table has a common allotrope stable at 25C having molecular structure (1)?A) element AB) element BC) element CD) element D
Q:
Which of these molecules is most likely to contain good π overlap of p orbitals, as shown in figure (a), rather than poor overlap of p orbitals, as shown in figure (b)?A) CO2B) SiO2C) GeO2D) SnO2
Q:
Which of these molecules is most likely to contain good overlap of p orbitals, as shown in figure (a), rather than poor overlap of p orbitals, as shown in figure (b)?A) Cl2B) N2C) P4D) S8
Q:
Which of these molecules is most likely to contain good overlap of p orbitals, as shown in figure (a), rather than poor overlap of p orbitals, as shown in figure (b)?A) Cl2B) O2C) P4D) S8
Q:
Which of the elements indicated on the above periodic table is a group 4A element that forms the strongest bonds?A) element AB) element BC) element CD) element D
Q:
Which of the elements indicated on the above periodic table is a group 4A element that is a semiconductor?A) element AB) element BC) element CD) element D
Q:
Which of the elements indicated on the above periodic table is the group 7A element with the largest atomic radius?
A) element A
B) element B
C) element C
D) element D
Q:
Which of the elements indicated on the above periodic table is the group 5A element with the smallest atomic radius?A) element AB) element BC) element CD) element D
Q:
Which of the elements indicated on the above periodic table is least electronegative?
A) element A
B) element B
C) element C
D) element D
Q:
Which of the elements indicated on the above periodic table has the highest ionization energy?A) element AB) element BC) element CD) element D
Q:
The elements indicated by the shaded area in the following periodic table are allA) main-group elements.B) main-group metals.C) nonmetals.D) semimetals.
Q:
The elements indicated by the shaded area in the following periodic table are all A) main-group metals.
B) nonmetals.
C) p-block elements.
D) semimetals.
Q:
The elements indicated by the shaded area in the following periodic table are all A) main-group elements.
B) p-block elements.
C) s-block elements.
D) transition elements.
Q:
The elements indicated by the shaded area in the following periodic table are all A) metals.
B) nonmetals.
C) p-block elements.
D) s-block elements.
Q:
The elements indicated by the shaded area in the following periodic table are all A) metals.
B) nonmetals.
C) p-block elements.
D) s-block elements.
Q:
The elements indicated by the shaded area in the following periodic table are all A) gases.
B) metals.
C) nonmetals.
D) semimetals.
Q:
Which of the following is a disproportionation reaction?A) 3 C(g) + 6(aq) -> Cl(aq) + 5 C(aq) 3O(l)B) 4 N(g) + 5(g) -> 4 NO(g) + 6 O(l)C) Fe(s) + 2 (aq) -> (aq) + (g)D) 2 NO(g) + (g) -> 2 N(g)
Q:
Which of the following is not expected to be stable?
A) HI
B) HCl
C) HI
D) HI
Q:
How would one synthesize a perchlorate salt?
A) Electrolytic oxidation of a solution of chorate salt.
B) Electrolytic oxidation of a solution of chorite salt.
C) Electrolytic oxidation of a solution of hypochlorite salt.
D) Oxidation of a solution of chlorate salt by a perbromate salt.
Q:
What are the products of the reaction of chlorine gas with hot aqueous sodium hydroxide?
A) Cl- and H2O
B) ClO3- and H2O
C) Cl- and ClO3-
D) Cl-, ClO3- and H2O
Q:
Using principles discussed in chapters 15 and 19, determine which of the following is the strongest acid.
A) HClO
B) HClO2
C) HClO3
D) HClO4
Q:
A 0.01 M aqueous solution of which of the following is the most basic?
A) NaClO
B) NaClO2
C) NaClO3
D) NaClO4
Q:
Which of the halogens forms more than one perhalic acid?
A) F
B) Cl
C) Br
D) I
Q:
What is the structure of sulfuric acid? A) 1
B) 2
C) 3
D) 4
Q:
What is the name of the commercial process for the preparation of sulfuric acid?
A) Contact process
B) Haber process
C) Mond process
D) Ostwald process
Q:
What is the anhydride of sulfuric acid?
A) SO2
B) SO3
C) S2O3
D) S2O5
Q:
What is a convenient synthetic method for the preparation of SO2?A) 2 SO3(g) + heat -> 2 SO2(g) + O2(g)B) S8(s) + 8 O2(g) + heat -> 8 SO2(g)C) H2SO3(aq) H2O(l) + SO2(aq)D) FeSO3(s) + heat -> FeO(s) + SO2(g)
Q:
What statement is not representative of the chemistry of H2S?
A) It has a linear geometry.
B) It is an extremely toxic substance.
C) It is a weak diprotic acid.
D) It is a weak reducing agent.
Q:
The increased viscosity of molten sulfur at 160-195C is due to the
A) melting of S8 to give discrete S8 units.
B) merging of the S8 rings to give interlocking S8 rings.
C) opening of the S8 rings to give smaller S units.
D) opening of the S8 rings which then polymerize into long chains.
Q:
Describe the color changes when sulfur (melting point 113C, boiling point 445C) is heated from 25C to 500C? It turns from a yellow solid to a
A) dark reddish brown liquid and then boils.
B) reddish brown solid and then into reddish brown liquid and then boils.
C) straw colored liquid which turns dark reddish brown and then it boils.
D) yellow liquid and then it boils.
Q:
What are appropriate methods for the generation of H2S?Reaction 1: FeS(s) + 2 H+(aq) -> H2S(g) + Fe2+(aq)Reaction 2: CH3C(CS)NH2(aq) + H2O(l) + heat -> CH3(CO)NH2(aq) + H2S(aq)Reaction 3: 3 S(g) + 2 H2O(g) -> SO2(g) + 2 H2S(g)Reaction 4: 2 SO2(g) + 2 H2O(g) -> 2 H2S(g) + 3 O2(g)A) Reactions 1 and 2B) Reactions 1 and 3C) Reactions 2 and 3D) Reactions 2 and 4
Q:
What is the structure of rhombic sulfur?
A) crown shaped S8 molecules
B) discrete S atoms
C) discrete S2 molecules
D) polymeric Sn chains
Q:
What is the chemical formula of "fool's gold"?A) cinnabar, HgSB) galena, PbSC) gypsum, CaSO42H2OD) pyrite, FeS2