chem ch 2 - Chemistry, 11e (Brown/LeMay/Brusten/Murphy)...

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Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 2:Atoms, Molecules, and Ions 2.1 Multiple-Choice and Bimodal Questions 1) A certain mass of carbon reacts with 13.6 g of oxygen to form carbon monoxide. __________ grams of oxygen would react with that same mass of carbon to form carbon dioxide, according to the law of multiple proportions? A) 25.6 B) 6.8 C) 13.6 D) 136 E) 27.2 Answer: E Diff: 3 Page Ref: Sec. 2.1 2) Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon for every 4.00 g of hydrogen, a ratio of 3:1 by mass. In ethane, there are 24.0 g of carbon for every 6.00 g of hydrogen, a ratio of 4:1 by mass. This is an illustration of the law of __________. A) constant composition B) multiple proportions C) conservation of matter D) conservation of mass E) octaves Answer: B Diff: 2 Page Ref: Sec. 2.1
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 2:Atoms, Molecules, and Ions 3) Which statement below correctly describes the responses of alpha, beta, and gamma radiation to an electric field? A) Both beta and gamma are deflected in the same direction, while alpha shows no response. B) Both alpha and gamma are deflected in the same direction, while beta shows no response. C) Both alpha and beta are deflected in the same direction, while gamma shows no response. D) Alpha and beta are deflected in opposite directions, while gamma shows no response. E) Only alpha is deflected, while beta and gamma show no response. Answer: D Diff: 2 Page Ref: Sec. 2.2 4) __________ and __________ reside in the atomic nucleus. A) Protons, electrons B) Electrons, neutrons C) Protons, neutrons D) none of the above E) Neutrons, only neutrons Answer: C Diff: 1 Page Ref: Sec. 2.2 5) 200 pm is the same as __________ Å. A) 2000 B) 20 C) 200 D) 2 E) 12 2 10 - × Answer: D Diff: 1 Page Ref: Sec. 2.3
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 2:Atoms, Molecules, and Ions 6) The atomic number indicates __________. A) the number of neutrons in a nucleus B) the total number of neutrons and protons in a nucleus C) the number of protons or electrons in a neutral atom D) the number of atoms in 1 g of an element E) the number of different isotopes of an element Answer: C Diff: 1 Page Ref: Sec. 2.3 7) Which pair of atoms constitutes a pair of isotopes of the same element? A) 14 14 6 7 X X B) 14 12 6 6 X X C) 17 17 9 8 X X D) 19 19 10 9 X X E) 20 21 10 11 X X Answer: B Diff: 1 Page Ref: Sec. 2.3 8) The nucleus of an atom contains __________. A) electrons B) protons, neutrons, and electrons C) protons and neutrons D) protons and electrons E) protons Answer: C Diff: 1 Page Ref: Sec. 2.3
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 2:Atoms, Molecules, and Ions 9) In the periodic table, the rows are called __________ and the columns are called __________. A) octaves, groups
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chem ch 2 - Chemistry, 11e (Brown/LeMay/Brusten/Murphy)...

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