Docstoc

IPC7A_PeriodicTable_DTC

Document Sample
IPC7A_PeriodicTable_DTC Powered By Docstoc
					Daily TAKS Connection:
Periodic Table



  IPC(7): The student knows relationships exist between properties
  of matter and its components. The student is expected to:
      (D) relate the chemical behavior of an element. including
      bonding, to its placement on the periodic table.
Foldable Instructions
Construct a folded book foldable        Instructions:
  and title ―Periodic Table‖                 Hamburger fold the
                                              foldable handouts
       Materials:                           Cut 2 cm slits from the
                                              edges of the fold of the
          Foldable handout (2
                                              handout that has page 2
           pages)                             (as marked)
          Scissors                          Cut along the fold line of
          Pen
                                              the other sheet of paper
                                              beginning and ending
          Colored                            about 2 cm from each
           pencils/crayons                    end (as marked).
          Periodic Table                    Burrito fold and insert
           (needed daily for                  paper from step 2 into the
                                              hole and open, forming a
           note-taking activities)            book.
          Importance of Atomic #




  Record the following on page 1 of your foldable:
   number of protons is the same as the atomic number;
    used to ID an element
Student Task: ID this
element
Question
An element has 24 protons. What element is it?

A. Magnesium
B. Molybdenum
C. Chromium
D. Iron
Question
A certain atom has a nucleus containing nine protons
  and ten neutrons and has nine electrons orbiting the
  nucleus. This atom is a form of the element —

a. potassium

b. fluorine

c. neon

d. calcium
Question
Alpha particles are one type of radioactivity. These
  particles have a nucleus of two protons and two
  neutrons but have no orbital electrons. Based on this
  information, it can be inferred that alpha particles are
  positive ions of the element —

a. actinium

b. curium

c. radium

d. helium
        “All in the Family”
Record the following notes on page 2 of your
  foldable
 ―groups‖ or ―families‖ are the columns on the
  Periodic Table
 elements in the same group have similar
  physical and chemical properties
Question
Which of the following groups contains members with
 similar chemical reactivity?

a. Li, Na, K

b. Be, Mg, Na

c. K, Ca, Sc

d. P, S, Cl
Question
The bonding characteristics of nitrogen are most similar
  to the bonding characteristics of —

a. hydrogen

b. silicon

c. helium

d. phosphorus
                 Noble Gases
Record the following notes on page 3 of
  your foldable
 Group 18 are called ―noble gases‖
     8 valence electrons (stable octet)
     noble gases are resistant to forming
      compounds

 Student Task: Color and label the noble
  gases on the drawing on page 3 of your
  foldable.
Question
The elements of which of these groups on the periodic
  table are least likely to form compounds?

a. Group 1

b. Group 9

c. Group 14

d. Group 18
 Question




Elements found in which shaded area of this periodic table undergo the
fewest chemical reactions?

a.      Q

b.      R

c.      S

d.      T
                          “Bond.”
                       “Ionic Bond.”
 Record the following notes on page 4 of your foldable
     Ionic Bonds:
        • when metals form bonds with nonmetals
        •Halogens, group 17 elements, form ionic
        compounds (salts) called halides
             Metals                         Nonmetals

Left of bold line (staircase)   Right of bold line (staircase)

Lose electrons when bonding     Gain electrons when bonding
Form ca+ions                    Form anions
Positive ions (positive         Negative ions (negative
oxidation numbers)               oxidation numbers)
               Where It’s At?
 Student Task
     On the top drawing on page 5 of your foldable,
      shade the metals one color and the nonmetals
      a different color.
     On bottom drawing on page 5 of your foldable,
      shade the halogen group.
Question
Elements in Group 2 of the periodic table usually —

a. form large molecules

b. lose electrons when bonding

c. act like nonmetals

d. liquefy at room temperature
Question
Sodium fluoride is a type of halide used in toothpaste to
  help strengthen teeth. Elements from which group in
  the periodic table are necessary to form halide
  compounds?

a. Group 4

b. Group 5

c. Group 10

d. Group 17
Question
The elements from which of the following groups are
  most likely to react with potassium (K)?

a. Group 2

b. Group 7

c. Group 13

d. Group 17
                 Oxidation Numbers
Record the following notes on page 6 of your foldable
How to determine oxidation numbers
1.    Find the group number (roman numeral) for the element
      (located at the top of the group).
2.    Determine if the element is a metal or a nonmetal.
     1.   If it is a metal, the roman numeral value from the group
          number is the positive value of the oxidation number.
          Example: Hydrogen is in group IA; therefore the oxidation number
             is +1 and the cation is written H1+.

                                          OR

     2.   If it is a nonmetal, subtract the roman numeral value from
          eight. Assign a negative sign to the oxidation number.
          Example: F is in group VIIA; 8 – 7 = 1; therefore the oxidation
             number is -1 and the anion is written F1-.
Question
What is the oxidation number of Mg?

A. 1+
B. 1-
C. 2+
D. 2-
Question
According to the periodic table, which of these elements
  will form an ion with a –3 charge?

a. N

b. La

c. Li

d. Rb
Question




Which shaded area of the periodic table shown shows the location
   of elements that require the least energy to lose two electrons?
A. Q
B. R
C. S
D. T
            Criss-Cross Shortcut
Record the following notes on the top of page 7 of your foldable
Criss-Cross Method for writing ionic compound
formulas
    • Rule: Value of oxidation # of cation becomes the
    subscript of the anion
    • Rule: Value of oxidation # of anion becomes the
    subscript of the cation
            Ca2+                                 Cl1-

              Ca1                                Cl2
                            CaCl2
Question

                Na1+           O2-

According to this information, what is the chemical
   formula for sodium oxide?

A. NaO
B. NaO2
C. Na2O
D. Na2O2
Question

               Mg2+            F1-

According to this information, what is the chemical
   formula for magnesium fluoride?

A. MgF
B. MgF2
C. Mg2F
D. Mg2F2
Question

                K1+          SO42-

According to this information, what is the chemical
   formula for potassium sulfate?

A. K2SO4
B. K4(SO4)2
C. K2(SO4)2
D. KSO4
Question
The ionic compounds that result from combining Group
  1 and Group 17 elements have a 1:1 ratio because

a. Group 1 elements are electrically neutral

b. Group 1 elements have one valence electron

c. Group 1 elements contain neutrons in the nucleus

d. Group 1 contains more elements than other groups
               We Like to Share!
Record the following notes on the bottom of
 page 7 of your foldable
     Covalent Bonds
          Non-metals form bonds with non-metals
          Elements share electrons
          Examples: CO2, CH4
             Carbon, Oxygen, and Hydrogen are all nonmetals
Question
Nitrogen forms covalent bonds with which of the
    following elements?

A. Sodium
B. Iron
C. Carbon
D. Neon
Question


The model above shows how an unidentified
   element, X, forms covalent bonds with
   oxygen. In which group on the periodic table
   does Element X most likely belong?
A. Group 2
B. Group 7
C. Group 15
D. Group 18

				
DOCUMENT INFO
Shared By:
Categories:
Stats:
views:5
posted:2/24/2011
language:English
pages:29