<ul><li>Notes: Classifying the Elements </li></ul><ul><li>CW: Concept Map </li></ul><ul><li>H: Properties of Metals and No...
Classification of Elements January 9, 2009
Objectives <ul><li>Describe characteristics of metals, nonmetals, and metalloids </li></ul><ul><li>Define period, periodic...
<ul><li>Insert discovery movie here </li></ul>
Henry Mosley (1914) <ul><li>Determined that each  atom  has a unique number of positive charges.  </li></ul><ul><li>Discov...
Periodic Law <ul><li>Because properties of elements repeated in an orderly way, it was called  periodic .  </li></ul><ul><...
Elements are arranged: Vertically into   Groups or Families Horizontally Into   Periods
<ul><li>Electrons in the outer most energy level of an atom are called ________ electrons . </li></ul><ul><li>A. valence <...
Every element in a  family  has the same number of  valence   electrons
The  group 2  atoms all have  2 valence electrons Be (Beryllium) Atom Mg (Magnesium) Atom
<ul><li>Starting at the left of each period, the pattern of valence electrons is </li></ul><ul><li>A.  1 2 3 4 5 6 7 8 </l...
Each atom has the same number of electron  shells .
The  period 4  atoms each have  4 electron   containing shells K (Potassium)  Atom Fe (Iron) Atom Kr (Krypton)  Atom 4 th ...
Metals <ul><li>shiny (they have luster) </li></ul><ul><li>solids at room temperature </li></ul><ul><li>good conductors  </...
<ul><li>Located to the left of the zigzag line </li></ul><ul><li>Most elements are metals </li></ul><ul><li>Usually have f...
Non-metals <ul><li>Can be found as solids, liquids, or gases at room temperature  </li></ul><ul><li>Typically dull and bri...
Metalloids <ul><li>Border both sides of the zigzag line </li></ul><ul><li>each has some of the properties of a metal and n...
<ul><li>The British scientist who rearranged the periodic table according to the atomic numbers of elements </li></ul><ul>...
<ul><li>The periodic law states that the physical and chemical properties are periodic functions of their </li></ul><ul><l...
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Classification Of Elements

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Classification Of Elements

  1. 1. <ul><li>Notes: Classifying the Elements </li></ul><ul><li>CW: Concept Map </li></ul><ul><li>H: Properties of Metals and Nonmetals </li></ul>
  2. 2. Classification of Elements January 9, 2009
  3. 3. Objectives <ul><li>Describe characteristics of metals, nonmetals, and metalloids </li></ul><ul><li>Define period, periodic law, family, malleable, ductile </li></ul><ul><li>Describe how elements are arranged on the periodic table </li></ul>
  4. 4. <ul><li>Insert discovery movie here </li></ul>
  5. 5. Henry Mosley (1914) <ul><li>Determined that each atom has a unique number of positive charges. </li></ul><ul><li>Discovered isotopes </li></ul><ul><li>Rearranged Mendeleyev’s table by their atomic number </li></ul>
  6. 6. Periodic Law <ul><li>Because properties of elements repeated in an orderly way, it was called periodic . </li></ul><ul><li>Properties of elements are a function of their atomic numbers.  </li></ul>
  7. 7. Elements are arranged: Vertically into Groups or Families Horizontally Into Periods
  8. 8. <ul><li>Electrons in the outer most energy level of an atom are called ________ electrons . </li></ul><ul><li>A. valence </li></ul><ul><li>B. oxidation </li></ul><ul><li>C. superior </li></ul><ul><li>D. bonding </li></ul>
  9. 9. Every element in a family has the same number of valence electrons
  10. 10. The group 2 atoms all have 2 valence electrons Be (Beryllium) Atom Mg (Magnesium) Atom
  11. 11. <ul><li>Starting at the left of each period, the pattern of valence electrons is </li></ul><ul><li>A. 1 2 3 4 5 6 7 8 </li></ul><ul><li>B. 0 1 2 3 4 5 6 7 </li></ul><ul><li>C. 0 1 2 3 4 3 2 1 </li></ul><ul><li>D. 4 3 2 1 0 1 2 3 4 </li></ul>
  12. 12. Each atom has the same number of electron shells .
  13. 13. The period 4 atoms each have 4 electron containing shells K (Potassium) Atom Fe (Iron) Atom Kr (Krypton) Atom 4 th Shell
  14. 14. Metals <ul><li>shiny (they have luster) </li></ul><ul><li>solids at room temperature </li></ul><ul><li>good conductors </li></ul><ul><li>malleable - capable of being hammered out into thin sheets </li></ul><ul><li>ductile - drawn out into wire or threads </li></ul>
  15. 15. <ul><li>Located to the left of the zigzag line </li></ul><ul><li>Most elements are metals </li></ul><ul><li>Usually have few valence electrons </li></ul>
  16. 16. Non-metals <ul><li>Can be found as solids, liquids, or gases at room temperature </li></ul><ul><li>Typically dull and brittle </li></ul><ul><li>Poor conductors </li></ul><ul><li>All non-metals except hydrogen are found on the right side of the zigzag line </li></ul><ul><li>Many valance electrons </li></ul>
  17. 17. Metalloids <ul><li>Border both sides of the zigzag line </li></ul><ul><li>each has some of the properties of a metal and non metal </li></ul><ul><li>can become good conductors under certain conditions such as high temperatures </li></ul><ul><li>Also called semiconductors </li></ul>
  18. 18. <ul><li>The British scientist who rearranged the periodic table according to the atomic numbers of elements </li></ul><ul><li>A. JJ Thomson </li></ul><ul><li>B. Henry Moseley </li></ul><ul><li>C. Ernest Rutherford </li></ul>
  19. 19. <ul><li>The periodic law states that the physical and chemical properties are periodic functions of their </li></ul><ul><li>A. valences </li></ul><ul><li>B. atomic mass </li></ul><ul><li>C. atomic numbers </li></ul><ul><li>D. atomic size </li></ul>

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