General Chemistry 101 Chapter 1 Review Questions, Study Guides, Projects, Research of Chemistry

Download General Chemistry 101 Chapter 1 Review Questions and more Study Guides, Projects, Research Chemistry in PDF only on Docsity! 1 General Chemistry 101 Chapter 1 Review Questions 1) Molecules can be described as A) mixtures of two or more pure substances. B) mixtures of two or more elements that has a specific ratio between components. C) two or more atoms chemically joined together. D) heterogeneous mixtures. E) homogeneous mixtures. Answer: C 2) Identify the TRUE statement. A) Hydrogen peroxide is used as rocket fuel and removes color from hair. B) Hydrogen peroxide can be used as a drink and can be used to bathe in. C) Both water and hydrogen peroxide are stable molecules. D) Water reacts with skin. E) Hydrogen peroxide is smaller than water. Answer: A 3) Which of the following represents a hypothesis? A) Sodium reacts with water to form sodium hydroxide and hydrogen gas. B) Nitrogen gas is a fairly inert substance. C) Nickel has a silvery sheen. D) When a substance combusts, it combines with air. E) When wood burns, heat is given off. Answer: D 4) The statement, "In a chemical reaction, matter is neither created nor destroyed" is called A) the Law of Conservation of Mass. B) Dalton's Atomic Theory. C) the Scientific Method. D) the Law of Multiple Proportions. E) the Law of Definite Proportions. Answer: A 5) Dalton's Atomic Theory states A) that all elements have several isotopes. B) that matter is composed of small indestructible particles. C) that the properties of matter are determined by the properties of atoms. D) that energy is neither created nor destroyed during a chemical reaction. E) that an atom is predominantly empty space. Answer: B 6) A scientific theory A) is just a theory. B) is a strict set of rules and procedures that lead to inarguable fact. C) isn't used much in modern chemistry. D) is based on continued observation and experiment. E) is a framework for proving an argument you know to be true. Answer: D 2 7) Which of the following statements is TRUE? A) A scientific law is fact. B) Once a theory is constructed, it is considered fact. C) A hypothesis is speculation that is difficult to test. D) An observation explains why nature does something. E) A scientific law summarizes a series of related observations. Answer: E 8) Identify a gas. A) definite volume and definite shape B) definite volume and no definite shape C) definite shape and no definite volume D) no definite shape and no definite volume Answer: D 9) Which of the following statements about crystalline and amorphous solids is TRUE? A) A crystalline solid is composed of atoms or molecules arranged with long-range repeating order. B) An example of a crystalline solid is glass. C) An example of an amorphous solid is table salt (NaCl). D) An amorphous solid is composed of atoms or molecules with a majority of its volume empty. E) All of the above statements are TRUE. Answer: A 10) Which of the following statements about the phases of matter is TRUE? A) In both solids and liquids, the atoms or molecules pack closely to one another. B) Solids are highly compressible. C) Gaseous substances have long-range repeating order. D) There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt. E) Liquids have a large portion of empty volume between molecules. Answer: A 11) A substance that can't be chemically broken down into simpler substances is A) a homogeneous mixture. B) an element. C) a heterogeneous mixture. D) a compound. E) an electron .Answer: B 12) A substance composed of two or more elements in a fixed, definite proportion is A) a homogeneous mixture. B) a heterogeneous mixture. C) a compound. D) a solution. E) an alloy. Answer: C 5 B) error that has equal probability of being too high and too low. C) error that averages out with repeated trials. D) error that is random. Answer: A 27) Read the water level with the correct number of significant figures. A) 5 mL B) 5.3 mL C) 5.32 mL D) 5.320 mL E) 5.3200 mL Answer: B 28) Read the length of the metal bar with the correct number of significant figures. A) 20 cm B) 15 cm C) 15.0 cm D) 15.00 cm E) 15.000 cm Answer: D 6 29) Identify the exact number. A) 2 B) 2.0 C) 2.00 D) 2.000 E) 2.0000 Answer: A 30) What answer should be reported, with the correct number of significant figures, for the following calculation? (433.621 - 333.9) × 11.900 A) 1.19 × 103 B) 1.187 × 103 C) 1.1868 × 103 D) 1.18680 × 103 E) 1.186799 × 103 Answer: A 31) What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41) / 63.498 A) 4.6 B) 4.57 C) 4.573 D) 4.5728 E) 4.57277 Answer: B 32) What answer should be reported, with the correct number of significant figures, for the following calculation? (965.43 × 3.911) + 9413.4136 A) 13189 B) 13189.2 C) 1.32 × 104 D) 1.3 × 104 E) 1.319 × 104 Answer: A 33) If the walls in a room are 955 square feet in area, and a gallon of paint covers 15 square yards, how many gallons of paint are needed for the room? (3 ft = 1 yd) A) 47 gallons B) 21 gallons C) 7.1 gallons D) 24 gallons E) 2.3 gallons Answer: C 34) Gas is sold for $1.399 per liter in Toronto, Canada. Your car needs 12.00 gallons. How much will your credit card be charged in Canadian dollars? A) $16.79 B) $67.15 C) $4.44 D) $63.54 Answer: D 35) Identify the longest length. A) 3.10 ft B) 37.0 in C) 1.02 yd D) 1.00 m E) 91.44 cm Answer: D 36) Identify the shortest length. A) 3.10 ft B) 37.0 in C) 1.02 yd D) 1.00 m E) 91.44 cm Answer: E 7 37) Identify the composition of diamond. A) carbon atoms B) boron atoms C) nitrogen atoms D) chlorine atoms E) silicon atoms Answer: A 38) Give the composition of water. A) one hydrogen atom and two oxygen atoms B) one hydrogen atom and one oxygen atom C) two hydrogen atoms and one oxygen atom D) one hydrogen molecule and two oxygen molecules Answer: C 39) Give the composition of hydrogen peroxide. A) two hydrogen atoms and two oxygen atoms B) one hydrogen molecule and one oxygen atom C) two hydrogen molecules and one oxygen molecule D) one hydrogen atom and two oxygen molecules Answer: A 40) Identify a state of matter. A) melting point B) solid C) odor D) volume E) density Answer: B 41) Identify the crystalline solid. A) plastic B) cloth C) diamond D) water E) coffee Answer: C 42) Choose the pure substance from the list below. A) coffee B) a casserole C) water D) salt water E) apple juice Answer: C 43) A banana split is an example of A) a compound. B) an element. C) a heterogeneous mixture. D) a homogeneous mixture. Answer: C 44) Household ammonia is an example of A) a compound. B) an element. C) a heterogeneous mixture. D) a homogeneous mixture. Answer: D 45) Diamond is an example of A) a compound. B) an element. 10 61) Identify the unit of measurement which is a SI base unit of measurement. A) meter B) Celsius C) quart D) gram E) kilometer Answer: A 62) Kelvin is a measure of A) temperature. B) mass. C) time. D) length. E) volume. Answer: A 63) Identify the largest measurement. A) attoL B) microL C) deciL D) gigaL E) petaL Answer: E 64) What symbol is used to represent the factor 10-3? A) M B) m C) μ D) n Answer: B 65) Which of the following is the smallest volume? A) 11 cm3 B) 0.065 dL C) 2.8 × 103 mL D) 5.0 × 107 nL Answer: A 66) What symbol is used to represent the factor 10-2? A) M B) m C) μ D) c Answer: D 67) The factor 0.01 corresponds to which prefix? A) deka B) deci C) centi D) milli Answer: C 68) The factor 106 corresponds to which prefix? A) deka B) deci C) mega D) milli Answer: C 69) Which multiplier does the abbreviation m represent? A) 1 × 103 B) 1 × 106 C) 1 × 109 D) 1 × 10-3 E) 1 × 10-6 Answer: D 11 70) Which multiplier does the abbreviation mega represent? A) 1 × 10-1 B) 1 × 10-3 C) 1 × 103 D) 1 × 106 E) 1 × 109 Answer: D 71) Which of the following is an example of intensive properties? A) boiling point B) height C) volume D) None of the above is an example of intensive properties. E) All of the above are examples of intensive properties. Answer: A 72) Which of the following is an example of extensive properties? A) mass B) color C) solubility D) viscosity E) taste Answer: A 73) Identify the common substance that has the highest density. A) glass B) ethanol C) aluminum D) lead E) iron Answer: D 74) Identify the common substance that has the lowest density. A) water B) titanium C) copper D) sugar E) gold Answer: A 75) What is the volume (in cm3) of a 43.6 g piece of metal with a density of 2.71 g/cm3? A) 16.1 B) 19.5 C) 0.425 D) 6.65 E) none of the above Answer: A 76) A piece of metal ore weighs 9.00 g. When a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore? A) 0.340 g/mL B) 0.580 g/mL C) 1.72 g/mL D) 2.94 g/mL Answer: C 77) A mass of mercury occupies 0.950 L. What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g/mL, and the density of ethanol is 0.789 g/mL. A) 0.0553 L B) 0.0613 L C) 16.3 L D) 18.1 L Answer: C 12 78) If the melting point of molybdenum metal is 2623°C, what is its melting point in Kelvin? A) 1454 K B) 2350 K C) 2896 K D) 4753 K Answer: C 79) If the temperature is 228°F, what is the temperature in degrees Celsius? A) 442.4°C B) 501°C C) 108.9°C D) -45°C E) 428°C Answer: C 80) Determine the mass of an object that has a volume of 88.6 mL and a density of 2.22 g/mL. A) 90.82 g B) 0.0251 g C) 39.9 g D) 86.4 g E) 197 g Answer: E 81) The outside temperature is 35°C, what is the temperature in °F? A) 95°F B) 1.67°F C) 3°F D) 57°F E) 63°F Answer: A 82) Which of the following is the lowest temperature? A) 48°C B) 75°F C) 313 K D) All of these temperatures are all equal. Answer: B 83) How many significant figures are in 0.00226500 mL? A) 3 B) 4 C) 5 D) 6 E) 7 Answer: D 84) How many significant figures are in 4.930 × 104 m? A) 2 B) 4 C) 3 D) 1 E) 5 Answer: B 85) How many significant figures are in the measurement, 263.900 m? A) 2 B) 3 C) 4 D) 5 E) 6 Answer: E 86) How many significant figures are in the measurement, 0.003800 g? A) 4 B) 5 C) 6 D) 7 E) 8 Answer: A 15 99) Without using a calculator, solve the following problem: A) 1 × 10-6 B) 1 × 104 C) 1 × 1024 D) 1 × 1034 Answer: C 100) Without using a calculator, solve the following problem: A) 1 × 108 B) 1 × 101 C) 1 × 10-13 D) 1 × 10-20 Answer: C 101) Which of the following is the greatest mass? A) 100,000 μg B) 1.000 × 10-2 kg C) 1.000 × 10-2 cg D) 1.000 × 10-6 Mg Answer: B 102) The mass of a proton is 1.67 × 10-27 kg. What is the mass of a proton in nanograms? A) 1.67 × 10-21 ng B) 1.67 × 10-18 ng C) 1.67 × 10-15 ng D) 1.67 × 10-12 ng Answer: C 103) The mass of a single arsenic atom is 1.244 × 10-22 g. This is the same mass as A) 1.244 × 10-16 mg. B) 1.244 × 10-25 kg. C) 1.244 × 10-28 μg. D) 1.244 × 10-31 ng. Answer: B 104) A student weighed 30.00 μg of sulfur in the lab. This is the same mass as A) 3.000 × 10-8 g. B) 3.000 × 10-5 kg. C) 3.000 × 10-5 mg. D) 3.000 × 104 ng. Answer: D 105) Convert 3.3 μm to meters. A) 3.3 × 10-9 m B) 3.3 × 10-6 m C) 3.3 × 10-3 m D) 3.3 × 106 m Answer: B 16 106) The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide. What is this distance in centimeters? A) 1.15 × 10-9 cm B) 1.15 × 10-8 cm C) 1.15 × 1012 cm D) 1.15 × 1016 cm Answer: B 107) The diameter of an atom is approximately 1 × 10-10 m. What is the diameter in millimeters? A) 1 × 10-16 mm B) 1 × 10-13 mm C) 1 × 10-7 mm D) 1 × 10-4 mm Answer: C 108) Which of the following volumes is equal to 41 mL? A) 41 cm3 B) 41 dm3 C) 0.41 L D) 0.00041 kL Answer: A 109) Convert 90 cm3 to m3. A) 9 × 10-5 m3 B) 9 × 10-1 m3 C) 9 × 103 m3 D) 9 × 107 m3 Answer: A 110) Convert 22 m3 to liters. A) 2.2 × 10-2 L B) 2.2 L C) 2.2 × 102 L D) 2.2 × 104 L Answer: D 111) A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square meters will the oil slick cover? A) 1.9 × 10-3 m2 B) 1.9 × 106 m2 C) 1.9 × 107 m2 D) none of these Answer: B 112) Because of the high heat and low humidity in the summer in Death Valley, California, a visitor requires about one quart of water for every two miles traveled on foot. Calculate the approximate number of liters required for a person to walk 15 kilometers in Death Valley. A) 4.4 L B) 18 L C) 46 L D) 70 L Answer: A 17 113) The estimated costs for remodeling the interior of an apartment are: three 1-gallon cans of paint at $13.22 each, two paint brushes at $12.22 each, and $145 for a helper. The total estimated cost with the appropriate significant figures is $________. A) 209.10 B) 2.1 × 102 C) 209 D) 2 × 102 E) 209.1 Answer: C 114) How many liters of wine can be held in a wine barrel whose capacity is 28.0 gal? 1 gal = 4 qt = 3.7854 L. A) 1.35 × 10-4 B) 0.135 C) 106 D) 7.40 × 103 E) 7.40 Answer: C 115) The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 115-lb person. 1 lb = 453.59 g. A) 24 B) 1,521 C) 1.5 D) 313 E) 3.1 × 105 Answer: D 116) The density of air under ordinary conditions at 25°C is 1.19 g/L. How many kilograms of air are in a room that measures 11.0 ft × 12.0 ft and has a 10.0 ft ceiling? 1 in. = 2.54 cm (exactly); 1 L = 103 cm3 A) 3.99 B) 0.166 C) 4.45 × 104 D) 0.1145 E) 44.5 Answer: E 117) How many liters of air are in a room that measures and has a 10.0 ft ceiling? 1 in. = 2.54 cm (exactly); 1 L = 103 cm3 A) 2.80 × 104 B) 104 C) 30.2 D) 3.02 × 107 E) 9.14 × 105 Answer: A 118) A recipe requires 1.89 liters of milk for a soup base. How many quarts are needed? A) 1.79 qt. B) 2.00 qt. C) 1.89 qt. D) 4.16 qt. E) 0.859 qt. Answer: B 119) If a room requires 25.4 square yards of carpeting, what is the area of the floor in units of ft2? (3 ft. = 1 yd.) A) 76.2 ft2 B) 8.47 ft2 C) 152.4 ft2 D) 229 ft2 E) 64.5 ft2 Answer: D 20 133) Give the symbol for silver. A) S B) Si C) Ar D) Ag E) Sl Answer: D 134) Ions differ in the number of A) electrons. B) neutrons. C) protons. D) neutrons and protons. E) electrons and protons. Answer: A 135) What species is represented by the following information? p+ = 12 n° = 14 e- = 10 A) Si4+ B) Mg C) Ne D) Si E) Mg2+ Answer: E 136) Identify the largest atom or ion of carbon. A) p+ = 6 n° = 6 e- = 6 B) p+ = 6 n° = 7 e- = 6 C) p+ = 6 n° = 6 e- = 7 D) p+ = 6 n° = 6 e- = 5 Answer: C 137) Which of the following statements is FALSE? A) Halogens are very reactive elements. B) The alkali metals are fairly unreactive. C) Sulfur is a main group element. D) Noble gases do not usually form ions. E) Zn is a transition metal. Answer: B 138) Which of the following does NOT describe a metal? A) good conductor of heat B) good conductor of electricity C) tends to gain electrons D) forms ionic compounds with nonmetals E) found on the left side of the periodic table Answer: C 139) Which of the following does NOT describe a nonmetal? A) tends to gain electrons B) found in the upper right hand corner of the periodic table C) poor conductor of electricity D) nonmetals are generally unreactive E) poor conductor of heat Answer: D 21 140) Identify the instrument that is used to determine the mass of a molecule. A) mass spectrometer B) nuclear magnetic resonance spectrometer C) infrared spectrometer D) gas chromatograph E) ultraviolet spectrophotometer Answer: A 141) The atomic mass for cadmium is A) 48 B) 112.41 C) 40.08 D) 20 E) 64.411 Answer: B 142) Calculate the atomic mass of silver if silver has 2 naturally occurring isotopes with the following masses and natural abundances: Ag-107 106.90509 amu 51.84% Ag-109 108.90476 amu 48.46% A) 107.90 amu B) 108.00 amu C) 107.79 amu D) 108.32 amu E) 108.19 amu Answer: E 143) Silver has an atomic mass of 107.868 amu. The Ag-109 isotope (108.905 amu) is 48.16%. What is the amu of the other isotope? A) 106.905 amu B) 106.908 amu C) 106.903 amu D) 106.911 amu Answer: A 144) What mass (in mg) does 2.63 moles of nickel have? A) 44.8 mg B) 2.23 × 104 mg C) 129 mg D) 3.56 × 105 mg E) 1.54 × 105 mg Answer: E 145) How many moles of Kr are contained in 398 mg of Kr? A) 4.75 × 10-3 moles Kr B) 33.4 moles Kr C) 2.11 × 10-4 moles Kr D) 2.99 × 10-3 moles Kr E) 1.19 × 10-4 moles Kr Answer: A 146) How many moles of Cs are contained in 595 kg of Cs? A) 2.23 × 102 moles Cs B) 4.48 × 103 moles Cs C) 7.91 × 104 moles Cs D) 1.26 × 103 moles Cs E) 5.39 × 102 moles Cs Answer: B 22 147) How many iron atoms are contained in 354 g of iron? A) 2.62 × 1025 Fe atoms B) 2.13 × 1026 Fe atoms C) 4.69 × 1024 Fe atoms D) 3.82 × 1024 Fe atoms E) 9.50 × 1022 Fe atoms Answer: D 148) How many phosphorus atoms are contained in 158 kg of phosphorus? A) 3.07 × 1027 phosphorus atoms B) 2.95 × 1027 phosphorus atoms C) 3.25 × 1028 phosphorus atoms D) 1.18 × 1024 phosphorus atoms E) 8.47 × 1024 phosphorus atoms Answer: A 149) Calculate the mass (in ng) of 2.33 × 1020 atoms of oxygen. A) 6.19 × 106 ng B) 1.62 × 107 ng C) 2.25 × 103 ng D) 3.73 × 106 ng E) 4.69 × 107 ng Answer: A 150) How many xenon atoms are contained in 2.36 moles of xenon? A) 3.92 × 1024 xenon atoms B) 2.55 × 1023 xenon atoms C) 1.42 × 1024 xenon atoms D) 7.91 × 1025 xenon atoms E) 1.87 × 1026 xenon atoms Answer: C 151) Rutherford proposed the A) atomic bomb. B) hydroelectric. C) First Law of Conservation. D) theory of explosives. E) nuclear theory. Answer: E 152) Identify the charges of the protons, neutrons, and electrons. A) protons +1, neutrons 0, electrons -1 B) protons 0, neutrons -1, electrons 0 C) protons -1, neutrons -1, electrons 0 D) protons 0, neutrons 0, electrons 0 E) protons +1, neutrons +1, electrons +1 Answer: A 153) Identify the element that has an atomic number of 40. A) neon B) calcium C) zirconium D) bromine E) gold Answer: C 154) Give the symbol for potassium. A) K B) P C) Po D) Ka E) Pt Answer: A 25 172) How many Li atoms are contained in 97.9 g of Li? A) 5.90 × 1025 Li atoms B) 7.09 × 1021 Li atoms C) 8.49 × 1024 Li atoms D) 4.27 × 1022 Li atoms E) 4.18 × 1024 Li atoms Answer: C 173) Calculate the mass (in g) of 2.1 × 1024 atoms of W. A) 3.9 × 102 g B) 2.4 × 102 g C) 3.2 × 102 g D) 1.5 × 102 g E) 6.4 × 102 g Answer: E 174) How many atoms are in 7.50 moles of Ca? A) 4.52 × 1024 atoms B) 1.52 × 1024 atoms C) 5.02 × 1023 atoms D) 3.01 × 1024 atoms E) 7.53 × 1023 atoms Answer: A 175) How many atoms are in 2.50 moles of N? A) 4.52 × 1024 atoms B) 1.51 × 1024 atoms C) 5.02 × 1023 atoms D) 3.01 × 1024 atoms E) 7.53 × 1023 atoms Answer: B Quantum Mechanical Model of Atoms 176) A type of energy embodied in oscillating electric and magnetic fields is called A) infrared radiation. B) microwave radiation. C) magnetism. D) electricity. E) electromagnetic radiation. Answer: E 177) The vertical height of a wave is called A) wavelength. B) amplitude. C) frequency. D) area. E) median. Answer: B 178) The number of cycles that pass through a stationary point is called A) wavelength. B) amplitude. C) frequency. D) area. E) median. Answer: C 179) The distance between adjacent crests is called A) wavelength. B) amplitude. C) frequency. D) area. E) median. Answer: A 26 180) Which of the following visible colors of light has the highest frequency? A) green B) red C) blue D) yellow E) orange Answer: C 181) Which of the following visible colors of light has the longest wavelength? A) blue B) green C) yellow D) red E) violet Answer: D 182) Which of the following colors of electromagnetic radiation has the shortest wavelength? A) blue B) violet C) orange D) green E) yellow Answer: B 183) Which of the following types of electromagnetic radiation has the lowest frequency? A) yellow B) blue C) orange D) green E) purple Answer: C 184) A sunburn is caused by overexposure to ________ radiation. A) ultraviolet B) gamma C) microwave D) x-ray E) radio Answer: A 185) ________ is/are used to image bones and internal organs. A) Ultraviolet light B) Gamma rays C) Microwaves D) X-rays E) Radio waves Answer: D 186) Food can be cooked by ________ radiation. A) ultraviolet B) gamma C) microwave D) x-ray E) radio Answer: C 187) The heat that is felt from a hot object is called ________ radiation. A) ultraviolet B) gamma C) infrared D) x-ray E) microwave Answer: C 188) When waves of equal amplitude from two sources are out of phase when they interact, it is called A) destructive interference. B) diffraction. C) constructive interference. D) effusion. E) amplitude. Answer: A 27 189) When waves of equal amplitude from two sources are in phase when they interact, it is called A) destructive interference. B) diffraction. C) constructive interference. D) effusion. E) amplitude. Answer: C 190) When a wave encounters an obstacle or a slit that is comparable in size to its wavelength, it bends around it. This characteristic is called A) destructive interference. B) diffraction. C) constructive interference. D) effusion. E) amplitude. Answer: B 191) Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88 × 1014 Hz. A) 229 nm B) 436 nm C) 206 nm D) 485 nm E) 675 nm Answer: B 192) ________, used to destroy molecules within unwanted cells such as cancer cells, are called ionizing radiation. A) Beta and gamma rays B) Alpha and beta rays C) Microwave and infrared D) X-rays and gamma rays E) Visible and microwave Answer: D 193) Calculate the energy of the green light emitted, per photon, by a mercury lamp with a frequency of 5.49 × 1014 Hz. A) 2.75 × 10-19 J B) 3.64 × 10-19 J C) 5.46 × 10-19 J D) 1.83 × 10-19 J E) 4.68 × 10-19 J Answer: B 194) Calculate the energy of the orange light emitted, per photon, by a neon sign with a frequency of 4.89 × 1014 Hz. A) 3.09 × 10-19 J B) 6.14 × 10-19 J C) 3.24 × 10-19 J D) 1.63 × 10-19 J E) 5.11 × 10-19 J Answer: C 195) Calculate energy of red light emitted by a neon atom with a wavelength of 703.2 nm. A) 3.54 × 10-19 J B) 4.27 × 10-19 J C) 2.34 × 10-19 J D) 6.45 × 10-19 J E) 2.83 × 10-19 J Answer: E 196) Calculate energy of violet light emitted by a hydrogen atom with a wavelength of 410.1 nm. A) 4.85 × 10-19 J B) 2.06 × 10-19 J C) 1.23 × 10-19 J D) 8.13 × 10-19 J E) 5.27 x 10-19 J Answer: A 30 213) What are the possible orbitals for n = 3? A) s, p, d B) s, p, d, f C) s D) s, p Answer: A 214) What value of l is represented by a d orbital? A) 1 B) 2 C) 0 D) 3 Answer: B 215) What value of l is represented by a f orbital? A) 1 B) 2 C) 0 D) 3 Answer: D 216) Which of the following statements is TRUE? A) We can sometimes know the exact location and speed of an electron at the same time. B) All orbitals in a given atom are roughly the same size. C) Since electrons have mass, we must always consider them to have particle properties and never wavelike properties. D) Atoms are roughly spherical because when all of the different shaped orbitals are overlapped, they take on a spherical shape. E) All of the above are true. Answer: D 217) Which of the following quantum numbers describes the shape of an orbital? A) principal quantum number B) magnetic quantum number C) spin quantum number D) Schrödinger quantum number E) angular momentum quantum number Answer: E 218) Which of the following quantum numbers describes the orientation of an orbital? A) magnetic quantum number B) principal quantum number C) angular momentum quantum number D) spin quantum number E) Schrödinger quantum number Answer: A 219) Which of the following quantum numbers describes the size and energy of an orbital? A) magnetic quantum number B) principal quantum number C) angular momentum quantum number D) spin quantum number E) Schrödinger quantum number Answer: B 31 220) How many different values of l are possible in the third principal level? A) 1 B) 2 C) 3 D) 0 E) 4 Answer: C 220) Determine the energy change associated with the transition from in the hydrogen atom. A) -2.18 × 10-19 J B) +6.54 × 10-19 J C) +4.58 × 10-19 J D) -1.53 × 10-19 J E) +3.76 × 10-19 J Answer: C 221) Determine the energy change associated with the transition from in the hydrogen atom. A) +3.03 × 10-19 J B) -1.82 × 10-19 J C) +5.51 × 10-19 J D) -3.03 × 10-19 J E) +2.69 × 10-19 J Answer: D 222) Identify the orbital. A) pz orbital B) dxy orbital C) px orbital D) dyz orbital E) py orbital Answer: C 223) Identify the orbital. A) pz orbital B) dxy orbital C) px orbital D) dyz orbital E) py orbital Answer: E 32 224) Identify the orbital. A) pz orbital B) dxy orbital C) px orbital D) dyz orbital E) py orbital Answer: A 225) Identify the orbital. A) d orbital B) dxy orbital C) px orbital D) f orbital E) py orbital Answer: A 226) Identify the orbital. A) d orbital B) dxy orbital C) px orbital D) f orbital E) py orbital Answer: D 227) During a thunderstorm, you see a flash of lightning. Five seconds later, you hear the thunder. How far away is the storm? A) 1 yard B) 10 miles C) 1 mile D) 6 miles E) 12 miles Answer: C 228) Electromagnetic radiation with a wavelength of 640 nm appears as orange light to the human eye. The frequency of this light is ________ s-1. A) 4.688 × 1014 B) 4.688 × 105 C) 1.920 × 102 D) 1.920 × 1011 E) 2.133 × 10-15 Answer: A