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Take home Exam%2 - Chapter1-2 MULTIPLECHOICE. 1 Solidshavea_ A definite,incompressible B definite,compressible C indefinite,compressible D

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Chapter 1 - 2 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Solids have a __________ shape and are not appreciably __________. A) definite, incompressible B) definite, compressible C) indefinite, compressible D) sharp, convertible E) indefinite, incompressible 1) 2) If matter is uniform throughout and cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a (an) __________. A) homogeneous mixture B) mixture of elements C) element D) heterogeneous mixture E) compound 2) 3) The symbol for the element potassium is __________. A) S B) Ca C) Pt D) K E) P 3) 4) A separation process that depends on differing abilities of substances to form gases is called __________. A) distillation B) chromatography C) solvation D) filtration E) All of the above are correct. 4) 5) Momentum is defined as the product of mass and velocity. The SI unit for momentum is __________. A) kg · m s B) kg · m hr C) g · km s D) kg · km hr E) g · m s 5) 6) A temperature of 400. K is the same as __________°F. A) 286 B) 88 C) 103 D) 127 E) 260 6) 7) 1 nanometer = __________ picometers A) 1000 B) 10 C) 1 D) 0.1 E) 0.01 7) 1
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8) An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of a sphere is 9.83 g. If the volume of this sphere is less than __________ cm 3 , then the sphere will sink in liquid mercury (density = 13.6 g/cm 3 ). A) 1.38 B) 7.48 C) 0.723 D) 134 E) none of the above 8) 9) The number 0.00430 has __________ significant figures. A) 6 B) 2 C) 4 D) 3 E) 5 9) 10) The correct result of the molecular mass calculation for H 2 SO 4 is __________. 4 × 15.9994 + 32.066 + 2 × 1.0079 = A) 98.074 B) 98.08 C) 98.84 D) 98.079 E) 98.838 10) 11) The density of mercury is 13.6 g/cm 3 . The density of mercury is __________ kg/m 3 . A) 1.36 × 10 - 5 B) 1.36 × 10 - 2 C) 1.36 × 10 - 4 D) 1.36 × 10 4 E) 1.36 × 10 8 11) 12) __________ and __________ reside in the atomic nucleus. A) Electrons, neutrons B) Protons, electrons C) Protons, neutrons D) none of the above E) Neutrons, only neutrons 12) 13) Which pair of atoms constitutes a pair of isotopes of the same element? A) 17 9 X 17 8 X B) 20 10 X 21 11 X C) 14 6 X 12 6 X D) 14 6 X 14 7 X E) 19 10 X 19 9 X 13) 14) Which group in the periodic table contains only nonmetals? A) 6A B) 2A C) 8A D) 1A E) 2B 14) 2
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15) Horizontal rows of the periodic table are known as __________. A) periods B) groups C) metals D) nonmetals E) metalloids 15) 16) Elements in Group 6A are known as the __________. A) alkaline earth metals B) noble gases C) chalcogens D) halogens E) alkali metals 16) 17) The empirical formula of a compound with molecules containing 12 carbon atoms, 14 hydrogen atoms, and 6 oxygen atoms is __________. A) CHO B) C 12 H 14 O 6 C) CH 2 O D) C 6 H 7 O 3 E) C 2 H 4 O 17) 18) The charge on the manganese in the salt MnF 3 is __________. A) 1 - B) 1+ C) 3+ D) 2 - E) 2+ 18) 19) Aluminum forms an ion with a charge of __________. A) 2+ B) 1+ C) 3 - D) 1 - E) 3+ 19) 20) Oxygen forms an ion with a charge of __________. A) 2 - B) 3+ C) 2+ D) 6+ E) 3 - 20) 21) Predict the empirical formula of the ionic compound that forms from magnesium and fluorine.
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This note was uploaded on 12/05/2010 for the course CHEM 854666 taught by Professor J during the Fall '10 term at Howard.

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Take home Exam%2 - Chapter1-2 MULTIPLECHOICE. 1 Solidshavea_ A definite,incompressible B definite,compressible C indefinite,compressible D

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