Lecture 6.1- The Periodic Table
Chemists use the properties
of elements to sort them into
groups.
Chlorine, bromine, and iodine have
 very similar chemical properties.
Mendeleev arranged the elements in
his periodic table in order of
increasing atomic mass.

Mendeleev’s
periodic table was
...
An Early Version of Mendeleev’s Periodic Table
In the modern periodic table,
elements are arranged in order
of increasing atomic number.
The periodic law: When elements are
arranged in order of increasing atomic
number, there is a periodic repetition of
their...
The stair-step line divides the
metals from the nonmetals.
Any square with a side on the stair-
step line is a metalloid (semi-metal),
EXCEPT ALUMINUM.
Any square with a side on the stair-
step line is a metalloid (semi-metal),
EXCEPT ALUMINUM.




Across a period, the prop...
Metals
Nonmetals
Metalloids (semi-metals)
Metals are good conductors of heat
and electric current.
–80% of elements are metals.
–Metals have a high luster, are
 duc...
6.1

Uses of Iron, Copper, and Aluminum
6.1

Uses of Iron, Copper, and Aluminum
6.1

Uses of Iron, Copper, and Aluminum
In general, nonmetals are poor
conductors of heat and electric
current.
 –Non-metals tend to gain e-
–Most nonmetals are g...
A metalloid generally has
properties that are similar to those
of metals and nonmetals.

      •Also called semi-metals
  ...
If a small amount of boron is mixed with
silicon, the mixture is a good conductor of
electric current. Silicon can be cut ...
The periodic table displays the symbols
and names of the elements, along with
information about the structure of their
ato...
Groups are labeled 1-18 or 1A-8A
The Group 1A elements are called
         alkali metals.
In their elemental form alkali metals
are extremely reactive, so they are not
naturally found in elemental form.




searc...
In their elemental form alkali metals
are extremely reactive, so they are not
naturally found in elemental form.




searc...
The Group 2A elements are
called alkaline earth metals.
The nonmetals of Group 7A
   are called halogens.
The noble gases are the elements
in Group 8A of the periodic table.
The blimp contains
helium, one of the
noble gases.
The Representative Elements
 Elements in groups 1A through 7A are
 often referred to as representative elements
 because t...
6.2
      Representative Elements
6.2
  Representative Elements
6.2
  Representative Elements
6.2
  Representative Elements
Transition metals
Transition metals




Inner
transition
metals
Lecture 6.1- The Periodic Table
Lecture 6.1- The Periodic Table
Lecture 6.1- The Periodic Table
Lecture 6.1- The Periodic Table
Lecture 6.1- The Periodic Table
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Lecture 6.1- The Periodic Table

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Section 6.1 Lecture for Honors & Prep Chemistry

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  • Chlorine, bromine, and iodine have very similar chemical properties. The numbers shown are the average atomic masses for these elements.
  • In this early version of Mendeleev’s periodic table, the rows contain elements with similar properties. Observing A fourth element is grouped with chlorine (Cl), bromine (Br), and (I) iodine. What is this element’s symbol?
  • In the modern periodic table, the elements are arranged in order of increasing atomic number. Interpreting Diagrams How many elements are there in the second period?
  • One way to classify elements in the periodic table is as metals, nonmetals, and metalloids. Inferring What is the purpose for the black stair-step line?
  • One way to classify elements in the periodic table is as metals, nonmetals, and metalloids. Inferring What is the purpose for the black stair-step line?
  • One way to classify elements in the periodic table is as metals, nonmetals, and metalloids. Inferring What is the purpose for the black stair-step line?
  • One way to classify elements in the periodic table is as metals, nonmetals, and metalloids. Inferring What is the purpose for the black stair-step line?
  • The metals iron, copper, and aluminum have many important uses. How each metal is used is determined by its properties.
  • The metals iron, copper, and aluminum have many important uses. How each metal is used is determined by its properties.
  • The metals iron, copper, and aluminum have many important uses. How each metal is used is determined by its properties.
  • This is the element square for sodium from the periodic table. Interpreting Diagrams What does the data in the square tell you about the structure of sodium atoms?
  • In this periodic table, the colors of the boxes are used to classify representative elements and transition elements.
  • In this periodic table, the colors of the boxes are used to classify representative elements and transition elements.
  • In this periodic table, the colors of the boxes are used to classify representative elements and transition elements.
  • In this periodic table, the colors of the boxes are used to classify representative elements and transition elements.
  • This blimp contains helium, one of the noble gases. Applying Concepts What does the ability of a helium-filled blimp to rise in air tell you about the density of helium?
  • Some of the representative elements exist in nature as elements. Others are found only in compounds.
  • Some of the representative elements exist in nature as elements. Others are found only in compounds.
  • Some of the representative elements exist in nature as elements. Others are found only in compounds.
  • Some of the representative elements exist in nature as elements. Others are found only in compounds.
  • Lecture 6.1- The Periodic Table

    1. 1. Lecture 6.1- The Periodic Table
    2. 2. Chemists use the properties of elements to sort them into groups.
    3. 3. Chlorine, bromine, and iodine have very similar chemical properties.
    4. 4. Mendeleev arranged the elements in his periodic table in order of increasing atomic mass. Mendeleev’s periodic table was used to predict the properties of undiscovered elements.
    5. 5. An Early Version of Mendeleev’s Periodic Table
    6. 6. In the modern periodic table, elements are arranged in order of increasing atomic number.
    7. 7. The periodic law: When elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties. –The properties of the elements within a period change as you move across a period from left to right. –The pattern of properties within a period repeats as you move from one period to
    8. 8. The stair-step line divides the metals from the nonmetals.
    9. 9. Any square with a side on the stair- step line is a metalloid (semi-metal), EXCEPT ALUMINUM.
    10. 10. Any square with a side on the stair- step line is a metalloid (semi-metal), EXCEPT ALUMINUM. Across a period, the properties of elements become less metallic and more nonmetallic.
    11. 11. Metals
    12. 12. Nonmetals
    13. 13. Metalloids (semi-metals)
    14. 14. Metals are good conductors of heat and electric current. –80% of elements are metals. –Metals have a high luster, are ductile, and are malleable. –Metals tend to lose electrons.
    15. 15. 6.1 Uses of Iron, Copper, and Aluminum
    16. 16. 6.1 Uses of Iron, Copper, and Aluminum
    17. 17. 6.1 Uses of Iron, Copper, and Aluminum
    18. 18. In general, nonmetals are poor conductors of heat and electric current. –Non-metals tend to gain e- –Most nonmetals are gases at room temperature. –A few nonmetals are solids, like sulfur, carbon, and phosphorus.
    19. 19. A metalloid generally has properties that are similar to those of metals and nonmetals. •Also called semi-metals The behavior of a metalloid can be controlled by changing conditions.
    20. 20. If a small amount of boron is mixed with silicon, the mixture is a good conductor of electric current. Silicon can be cut into wafers, and used to make computer chips.
    21. 21. The periodic table displays the symbols and names of the elements, along with information about the structure of their atoms.
    22. 22. Groups are labeled 1-18 or 1A-8A
    23. 23. The Group 1A elements are called alkali metals.
    24. 24. In their elemental form alkali metals are extremely reactive, so they are not naturally found in elemental form. search youtube for brainiac alkali metal to watch this video at home
    25. 25. In their elemental form alkali metals are extremely reactive, so they are not naturally found in elemental form. search youtube for brainiac alkali metal to watch this video at home
    26. 26. The Group 2A elements are called alkaline earth metals.
    27. 27. The nonmetals of Group 7A are called halogens.
    28. 28. The noble gases are the elements in Group 8A of the periodic table.
    29. 29. The blimp contains helium, one of the noble gases.
    30. 30. The Representative Elements Elements in groups 1A through 7A are often referred to as representative elements because they display a wide range of physical and chemical properties.
    31. 31. 6.2 Representative Elements
    32. 32. 6.2 Representative Elements
    33. 33. 6.2 Representative Elements
    34. 34. 6.2 Representative Elements
    35. 35. Transition metals
    36. 36. Transition metals Inner transition metals

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