Download Ch. 6 SG answers

aName _______________________________________________
Period ______
Chapter 6 Vocabulary
Matching – Match the correct definition with each vocabulary word.
_M____ 1. Lanthanides
A. 14 Elements, Atomic Numbers 90-103
__G___ 2. Electron Affinity
B. Group 1 Elements
__K___ 4. Ionization
C. Group 2 Elements
___C__ 5. Alkaline Earth Metals
D. Negative Ion
___Q__ 6. Transition Elements (Metals)
E. Positive Ion
__E___ 7. Cation
F. ½ the distance between the nuclei of atoms joined in a molecule
___I__ 8. Halogens
G. Energy change when an electron is acquired by a neutral atom
___O_ 9. Periodic Law
H. Ability of an atom in a chemical compound to attract electrons
__F___ 10. Atomic Radius
I. Group 17 Elements
__R__ 11. Valence Electrons
J. Atom or group of atoms with either a + or - charge
__H___ 12. Electronegativity
K. Formation of an ion
___J__ 13. Ion
L. Energy required to remove an electron from an atom of an elements
___A__ 14. Actinides
M. 14 Elements, Atomic Numbers 58-71
__N___ 15. Main-Group Elements (Representative)
N. Elements of the S and P blocks
__L___ 16. Ionization Energy
O. Physical and Chemical properties of elements are periodic functions of
their atomic numbers
__D___ 17. Anion
P. Arrangement of elements in order of their atomic number so that
elements with similar properties fall in the same column
__P___ 18. Periodic Table
Q. 10 subgroups of elements that intervene between groups 2-13
beginning in period 4
__B___ 19. Alkali Metals
R. Electrons available to be lost, gained, or shared in the formation of
chemical compounds
Section 6.1 Review (Text Pages 174-181)
___C__ 1. In the modern periodic table, elements are ordered
a. According to decreasing atomic mass
b. According to Mendeleev’s original design
c. According to increasing atomic number
d. Based on when they were discovered
__D___ 2. Mendeleev noticed that properties of elements appeared at regular intervals when the elements were arranged in order
of increasing
a. density
c. atomic number
b. reactivity
d. atomic mass
__B___ 3. The modern periodic law states that
a. No two electrons with the same spin can be found in the same place in an atom
b. The physical and chemical properties of the elements are repeating as a result of their atomic number
c. Electrons exhibit properties of both particles and waves
d. The chemical properties of elements can be group according to their periodicity, but physical properties cannot
__B___ 4. Which elements are NOT represented in Mendeleev’s Periodic Table (p175)?
a. Transition Elements
c. Halogens
b. Noble Gases
d. Alkali Metals
__D__ 5. The more distinctive property of the noble gases is that they are
a. metallic
c. metalloids
b. reactive
d. largely unreactive
__C___ 6. Lithium, the first element in Group 1, has an atomic number of 3. The second element in this group has an atomic
number
a. 4
c. 11
b. 10
d. 18
7. Samarium, Sm, is a member of the lanthanide series.
a. Identify the element just below Samarium on the Periodic Table:
b. The atomic number of these two elements differ by how many units:
________Pu_______________
________32 protons________________
8. A certain isotope contains 53 protons, 78 neutrons, and 54 electrons.
a. What is its atomic number?
_______53 protons = atomic number__________
b. Is this element Pt, Xe, I, or Bh?
____________Iodine #53 (53 protons)____________
c. Identify two other elements in this group.
________F, Cl, Br, At __________
9. In a modern periodic table, every element is a member of both a horizontal row and a vertical column. Which one is the group,
and which one is the period?
Vertical columns - Groups/families
Periods- Rows
10. Explain the distinction between atomic mass and atomic number.
Mass – is the mass of protons and neutron mass
atomic number is just # of protons
11. In the periodic table, the atomic masses of Te and I decrease rather than increase, while their atomic numbers increase. This
phenomenon happens to other neighboring elements in the periodic table. Find and name two of theses sets of elements.
Co, Ni
Ar, K
12. Explain how Mendeleev developed the Periodic Table.
Arranged them by similar properties
13. Explain the term “periodicity.” How does it apply to the periodic table?
Repeating of similar properties recurring in intervals.
Section 6.2 Review (Text Pages 182 – 186) - Complete
1.
Identify the element, and write the noble-gas configuration, for each of the following:
a. The Group 14 element in Period 4
_________ Ge; [Ar]3d104s 2 4p2______
b.
The only metal in Group 15
_________ Bi; [Xe]4f145d106s 2 6p3______________
c. The transition metal with the smallest atomic mass
d.
__________Sc; [Ar]3d1 4s 2 _or___ Sc; [Ar] 4s2 3d1_____
The alkaline earth metal with the largest atomic number _______ Ra; [Rn]7s 2_________________
e. The last known naturally occurring element
____________ Uranium _____________
2. Draw the “Electron-Dot” notations for each of the atomic symbols, indicating the correct number of “dots” to represent the
valence electrons:
H
F
Ca
Si
Ne
Cu
1 or 2 dots
3. There are 18 groups on the periodic table. Write the group number(s) of the periodic table that represent:
The s block:
_________
The p block:
________
The d block:
________
4. Which elements have these ENDING configurations?
a. 4p5
Br
____________ f. 3d6
__________S___________________
b. 2s2
Be ________________ g. 5d7
___________Pt___________________
c. 5f3
Pa_________________ h. 6s1
____________Cs_________________
d. 7s1
_Fr________________ i. 4f12
__________Tm_____________________
e. 5p4
__Te_______________ j. 2p3
_________N____________________
Section 6.3 Review (Text Pages 182 – 186) – Highlight or CLEARLY Circle the CORRECT atom.
1. Which of these elements is a MORE reactive nonmetal?
2. Which of these elements has a LOWER ionization energy?
3. Which of these elements has a LOWER electron affinity?
4. Which of these atoms is a BIGGER?
5. Which of these elements has a HIGH ionization energy?
6. Which of these elements is a MORE reactive metal?
7. Which of these elements has a HIGHER electronegativity?
8. Which of these elements has a SMALLER atomic radius?
9. Which of these elements has a HIGHER electron affinity?
10. Which of these elements is a HALOGEN?
11. Which of these elements has a LARGER atomic radius?
12. Which of these elements has a HIGHER ionization energy?
13. Which of these atoms is SMALLER?
14. Which of these elements has a LOWER electronegativity?
15. Which of these elements has a SMALLER atomic radius?
16. Which of these elements has a HIGHER electron affinity?
Br
Cu
As
I-1
Rb
Li
C
Al
N
Br
B
Mg
K+1
Sc
Zn
P
I
Co
N
I
K
Fr
O
P
B
B
F
Ba
K
Ga
Cu
Cl
17.
18.
19.
20.
Which of these elements has a HIGHER electronegativity?
Which element is an ALKALINE EARTH metal?
Which element is an ALKALI metal?
Which of these elements is found in the THIRD PERIOD?
Ti
Cs
K
Sc
V
Ca
Ca
Mg