Chapter 2 Pre-Test sections 2.1-2.7

A octaves groups b staffs families c periods groups d

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a. octaves, groups b. staffs, families c. periods, groups d. cogeners, families e. rows, groups
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20. Which one of the following is a nonmetal? a. W b. Sr c. Os d. Ir e. Br 21. Which pair of elements below should be the most similar in chemical properties? a. C and O b. B and As c. I and Br d. K and Kr e. Cs and He 22. Calcium is a _____ and silver is a _____. a. nonmetal, metal b. metal, metal c. metalloid, metal d. metal, metalloid e. nonmetal, metalloid 23. __________ are found uncombined, as monatomic species in nature. a. Noble gases b. Chalcogens c. Alkali metals d. Alkaline earth metals e. Halogens 24. Which one of the following molecular formulas is also an empirical formula? a. C 6 H 6 O 2 b. C 2 H 6 SO c. H 2 O 2 d. H 2 P 4 O 6 e. C 6 H 6 25. The empirical formula of a compound with molecules containing 12 carbon atoms, 14 hydrogen atoms, and 6 oxygen atoms is __________. a. C 12 H 14 O 6 b. CHO c. CH 2 O d. C 6 H 7 O 3 e. C 2 H 4 O
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26. __________ and __________ are isotopes of the same element. a. 116 2+ 119 92 X , 92 X b. 116 2+ 122 2+ 92 X , 89 X c. 96 116 45 X, 92 X d. 233 2+ 116 4+ 99 X , 92 X e. 22 79 2+ 11 X, 38 X 27. Of the following, _________ contains the greatest number of electrons. a. P 3+ b. P c. P 2- d. P 3- e. P 2+ 28. There are _____ protons, _____ neutrons, and _____ electrons in the ion 90 Sr 2+ . a. 38, 52, and 36 b. 38, 52, and 38 c. 38, 52, and 40 d. 52, 38, and 50 e. 52, 38, and 54 29. Which species is an isotope of 39 Cl? a. 40 Ar + b. 34 S 2- c. 36 Cl - d. 80 Br e. 39 Ar 30. The most metallic elements would be found at the bottom of which group? a. w b. x c. y d. z e. none of these
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Honors Chemistry Chapter 2.1-2.6 Review 1. c 2. b 3. b 4. e 5. d 6. a 7. d 8. c 9. e 10. d 11. b 12. a 13. a 14. e 15. a 16. e 17. d 18. b 19. c 20. e 21. c 22. b 23. a 24. b 25. d 26. a 27. d 28. a 29. c 30. a
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a octaves groups b staffs families c periods groups d...

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