Date26.04.2017Size42.89 Kb.

You are watching: Which of the following group 7a elements is the most reactive?

Navigate this page:
PS Chapter 5____ 1. What Group 7A elements is the most reactive? ____ 2. Two highly reactive elements in Period 2 are the metal lithium and the

____ 3. Mendeleev arranged the known chemical elements in a table according to increasing

____ 4. Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element? ____ 5. The standard on which the atomic mass unit is based is the mass of a

____ 6. At room temperature, none of the metals are

____ 7. What gases emit colors when an electric current is applied?

____ 8. Which element is found in most of the compounds in your body except for water?

____ 9. Compared with Group 2A elements, Group 6A elements have____ 10. What statements apply to metals? ____ 11. Among the alkali metals, the tendency to react with other substances____ 12. The tendency of an element to react is closely related to ____ 13. What families of elements contains only metals? ____ 14. Which of the following Group 1A elements is the most reactive? ____ 15. As you move from left to right across a period, the number of valence electrons

____ 16. The atomic mass of an element is

____ 17. In a periodic table, a set of properties repeats from

____ 18. Group 7A of the periodic table contains the

Figure 5-1
____ 19. Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B. ____ 20. A member of the boron family has three valence electrons, while a member of the nitrogen family has____ 21. What is true about the metalloid silicon? ____ 22. To keep them from reacting, some highly reactive elements are stored in____ 23. The unit for atomic mass is ____ 24. What is true about the elements fluorine, chlorine, and iodine? ____ 25. Mendeleev gave the name eka-aluminum to a(an) ____ 26. Which halogen is most likely to react? ____ 27. One twelfth the mass of a carbon-12 atom is used to define a(an) ____ 28. Atoms of the most reactive elements tend to have____ 29. The usefulness of Mendeleev’s periodic table was confirmed by____ 30. Which element is found in nature only in compounds? Essay 31. Although lithium and neon are both in Period 2 of the periodic table, they have very different properties. Explain how this is possible. 32. In a laboratory procedure, you form a useful but highly reactive compound. How could you store the compound so that it will not react? 33. In science lab, your teacher gives you two small pieces of matter and tells you that one piece is a metal and one is a nonmetal. Without changing the size or shape of the pieces, how could you test them to determine which is the metal?PS Chapter 5Answer SectionMULTIPLE CHOICE 1. ANS: C PTS: 1 DIF: L1 OBJ: 5.3.2

STA: 1.1.9-11.F.c | 1.1.9-11.F.a | 1.1.9-11.F

2. ANS: C PTS: 1 DIF: L2 OBJ: 5.2.4

STA: 1.1.9-11.F.a

3. ANS: D PTS: 1 DIF: L2 OBJ: 5.1.1 4. ANS: B PTS: 1 DIF: L2 OBJ: 5.2.1

STA: 1.1.9-11.F.a | 1.1.9-11.F

5. ANS: D PTS: 1 DIF: L2 OBJ: 5.2.2

STA: 1.1.9-11.E.c

6. ANS: D PTS: 1 DIF: L2 OBJ: 5.2.3

STA: 1.1.9-11.A.d | 1.1.9-11.F.b

7. ANS: B PTS: 1 DIF: L1 OBJ: 5.3.3

STA: 1.1.9-11.F.a

8. ANS: D PTS: 1 DIF: L1 OBJ: 5.3.3

STA: 1.1.9-11.F.a

9. ANS: B PTS: 1 DIF: L1 OBJ: 5.3.1

STA: 1.1.9-11.F.a

10. ANS: C PTS: 1 DIF: L2 OBJ: 5.2.3

STA: 1.1.9-11.A.d | 1.1.9-11.F.b

11. ANS: B PTS: 1 DIF: L2 OBJ: 5.3.2

STA: 1.1.9-11.F.c | 1.1.9-11.F.a | 1.1.9-11.F

12. ANS: C PTS: 1 DIF: L1 OBJ: 5.3.1

STA: 1.1.9-11.F.a

13. ANS: B PTS: 1 DIF: L1 OBJ: 5.2.3

STA: 1.1.9-11.A.d | 1.1.9-11.F.b

14. ANS: A PTS: 1 DIF: L1 OBJ: 5.3.2

STA: 1.1.9-11.F.c | 1.1.9-11.F.a | 1.1.9-11.F

15. ANS: A PTS: 1 DIF: L1 OBJ: 5.3.1

STA: 1.1.9-11.F.a

16. ANS: D PTS: 1 DIF: L2 OBJ: 5.2.2

STA: 1.1.9-11.E.c

17. ANS: D PTS: 1 DIF: L1 OBJ: 5.1.1 18. ANS: A PTS: 1 DIF: L1 OBJ: 5.2.4

STA: 1.1.9-11.F.a

19. ANS: B PTS: 1 DIF: L1 OBJ: 5.2.1

STA: 1.1.9-11.F.a | 1.1.9-11.F

20. ANS: B PTS: 1 DIF: L2 OBJ: 5.3.1

STA: 1.1.9-11.F.a

21. ANS: D PTS: 1 DIF: L1 OBJ: 5.2.3

STA: 1.1.9-11.A.d | 1.1.9-11.F.b

22. ANS: D PTS: 1 DIF: L2 OBJ: 5.3.3

STA: 1.1.9-11.F.a

23. ANS: B PTS: 1 DIF: L1 OBJ: 5.2.2

STA: 1.1.9-11.E.c

24. ANS: C PTS: 1 DIF: L2 OBJ: 5.3.1

STA: 1.1.9-11.F.a

25. ANS: C PTS: 1 DIF: L2 OBJ: 5.1.2 26. ANS: B PTS: 1 DIF: L2 OBJ: 5.3.2

STA: 1.1.9-11.F.c | 1.1.9-11.F.a | 1.1.9-11.F

27. ANS: D PTS: 1 DIF: L1 OBJ: 5.2.2

STA: 1.1.9-11.E.c

28. ANS: A PTS: 1 DIF: L2 OBJ: 5.3.1

STA: 1.1.9-11.F.a

29. ANS: C PTS: 1 DIF: L1 OBJ: 5.1.2 30. ANS: A PTS: 1 DIF: L2 OBJ: 5.3.3

STA: 1.1.9-11.F.a

ESSAY
31. ANS:

Lithium is an alkali metal in Group 1A. Alkali metals are the most reactive metals. Neon is a noble gas in Group 8A. Noble gases are highly unreactive nonmetals.

PTS: 1 DIF: L2 OBJ: 5.3.1 | 5.3.2

STA: 1.1.9-11.F.a | 1.1.9-11.F.c | 1.1.9-11.F.a | 1.1.9-11.F

32. ANS:

You could store the compound in a jar filled with a noble gas such as argon. Students may also recall that reactive elements are stored under oil.

See more: What I Am A Polygon That Connects With The Base Of A Polyhedron

PTS: 1 DIF: L2 OBJ: 5.3.1 STA: 1.1.9-11.F.a 33. ANS:

You could see which piece conducts an electric current or which piece is a better conductor of heat.