MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Transcription

1 Module 2 Practice Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Elements exhibit similar physical and chemical properties. 1) A) on opposite sides of the periodic table B) with similar atomic masses C) in the same group of the periodic table D) in the same period of the periodic table E) with similar chemical symbols 2) Which formula/name pair is incorrect? 2) A) Fe2(SO3)3 iron(iii) sulfite B) FeSO3 iron(ii) sulfite C) Fe2(SO4)3 iron(iii) sulfide D) FeSO4 iron(ii) sulfate E) FeS iron(ii) sulfide 3) Which combination of protons, neutrons, and electrons is correct for the isotope of copper, 63 Cu? 3) 29 A) 34 p +, 29 n, 34 e - B) 63 p +, 29 n, 63 e - C) 29 p +, 29 n, 63 e - D) 29 p +, 34 n, 29 e - E) 34 p +, 34 n, 29 e - 4) Which species is an isotope of 39 Cl? 4) A) 39 Ar B) 80 Br C) 36 Cl - D) 40 Ar + E) 34 S 2-5) Which one of the following does not occur as diatomic molecules in elemental form? 5) A) hydrogen B) bromine C) oxygen D) sulfur E) nitrogen 6) Which pair of elements is most apt to form an ionic compound with each other? 6) A) calcium, sodium B) barium, bromine C) oxygen, fluorine D) sulfur, fluorine E) nitrogen, hydrogen 7) Which species has 54 electrons? 7) A) Xe 2+ B) Te2- C) Xe+ D) Sn2+ E) Cd 1

2 8) All atoms of a given element have the same. 8) A) number of protons B) mass C) density D) number of electrons and neutrons E) number of neutrons 9) In the absence of magnetic or electric fields, cathode rays. 9) A) travel in straight lines B) cannot be detected C) bend toward a light source D) do not exist E) become positively charged 10) An element that appears in the lower left corner of the periodic table is. 10) A) definitely a metal B) either a metal or metalloid C) either a metalloid or a non-metal D) definitely a metalloid E) definitely a non-metal 11) The nucleus of an atom contains. 11) A) protons B) neutrons C) electrons D) protons and neutrons E) protons, neutrons, and electrons 12) Different isotopes of a particular element contain the same number of. 12) A) subatomic particles B) protons, neutrons, and electrons C) neutrons D) protons E) protons and neutrons 13) Which isotope has 45 neutrons? 13) A) Se B) Kr C) Rh D) Br E) Cl 2

3 14) Which pair of atoms constitutes a pair of isotopes of the same element? 14) A) X 19 9 X B) 17 9 X 17 8 X C) 14 6 X 14 7 X D) X X E) 14 6 X 12 6 X 15) Which one of the following polyatomic ions has the same charge as the hydroxide ion? 15) A) ammonium B) sulfate C) carbonate D) phosphate E) nitrate 16) Formulas that show how atoms are attached in a molecule are called. 16) A) molecular formulas B) structural formulas C) ionic formulas D) empirical formulas E) diatomic formulas 17) An element in the upper right corner of the periodic table. 17) A) is either a metal or metalloid B) is definitely a metalloid C) is either a metalloid or a non-metal D) is definitely a non-metal E) is definitely a metal 18) Which of the following compounds would you expect to be ionic? 18) A) H2O2 B) CaO C) H2O D) NH3 E) SF6 19) Which one of the following is the formula of hydrochloric acid? 19) A) HClO4 B) HClO C) HCl D) HClO2 E) HClO3 20) Which element forms an ion with the same charge as the sulfate ion? 20) A) iron B) copper C) oxygen D) magnesium E) phosphorus 21) Which species has 18 electrons? 21) A) 39K B) 35Cl C) 32S-2 D) 27Al+3 E) 64Cu+2 3

4 22) The elements in groups 1A, 6A, and 7A are called,, respectively. 22) A) alkali metals, halogens, and noble gases B) alkaline earth metals, halogens, and chalcogens C) halogens, transition metals, and alkali metals D) alkali metals, chalcogens, and halogens E) alkaline earth metals, transition metals, and halogens 23) Which formula/name pair is incorrect? 23) A) Mg3N2 magnesium nitrite B) Mg(MnO4)2 magnesium permanganate C) Mn(NO2)2 manganese(ii) nitrite D) Mn(NO3)2 manganese(ii) nitrate E) Mg(NO3)2 magnesium nitrate 24) The correct name for HNO2 is. 24) A) nitric acid B) hyponitrous acid C) nitrous acid D) pernitric acid E) hydrogen nitrate 25) Vanadium has two naturally occurring isotopes, 50 V with an atomic mass of amu and 51 V with an atomic mass of The atomic weight of vanadium is The percent abundances of the vanadium isotopes are % 50V and % 51V. A) 1.0, 99 B) 49, 51 C) 0.25, D) 99, 1.0 E) 99.75, ) 4

5 Answer Key Testname: UNTITLED2 1) C 2) C 3) D 4) C 5) D 6) B 7) B 8) A 9) A 10) A 11) D 12) D 13) D 14) E 15) E 16) B 17) D 18) B 19) C 20) C 21) C 22) D 23) A 24) C 25) C 5