The Periodic Table Presentation 2
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The Periodic Table Presentation 2

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part 2 of periodic table notes

part 2 of periodic table notes

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  • You will of course feel it booooooring only coz its not u r cup of tea leave it :)
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  • wow soooooooooo boring this shouldnt even be allowed. even my grandmother would fall asleep to that. hahahahah
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    The Periodic Table Presentation 2 The Periodic Table Presentation 2 Presentation Transcript

    • Modern Periodic Table
    • What’s in the box?
      • What does the 1 stand for?
        • Atomic Number
        • This tells us what about an atom of H?
          • # of protons
      • What does the 1.007947 stand for?
        • Atomic Mass
        • This tells us what about an atom of H?
          • Mass in nucleus (# of protons and neutrons)
      • On the modern periodic table, how are elements arranged?
        • In order of increasing atomic number, left to right
      • What do we call the columns (up and down) on the periodic table?
        • GROUPS (or families)
      • What do we call the rows (left and right) on the periodic table?
        • PERIODS
    •  
      • What does periodic mean?
        • Having or being marked by repeated cycles
      • What element does period 1 begin with?
        • H
      • How many periods are there on the table?
        • 7
      Periods
    • Groups
      • Two different number systems for groups
      • In the first numbering system, groups are number 1-8 and each number is followed by either an A or B
      • The groups labeled A are the main groups (1A thru 8A)
        • Representative elements
          • This is because they possess a wide range of chemical and physical properties
      • The groups designated with a B (1B thru 8B) are found in the center
        • Transition Elements
      • A more recent numbering system has been devised numbering 1-18
    •  
    • Classification of Elements
      • What was another pattern of organization you noticed on the periodic table?
        • Physical properties and states
      • 3 main classifications of elements
        • Metals
        • Nonmetals
        • Metalloids
    • 1. Metals
      • Elements that are shiny, smooth and clean
      • Solid at room temperature
      • Good conductors of heat and electricity
      • Malleable
        • Hammered flat into a sheet
      • Ductile
        • Drawn out into a wire
    • 1. Metals
      • All group B and most group A elements
      • Staircase line is divider between metals and nonmetals (Boron 3A and Astatine 7A)
      • ALMOST all elements on left side of table are metals
        • What is the exception?
          • Hydrogen
    • Alkali and Alkaline Earth metals (Group A)
      • What does alkali mean?
        • basic
      • Alkali metals
        • Group 1A (except hydrogen)
      • Alkaline earth metals
        • Group 2A
      • Both alkali and alkaline earth metals are chemically reactive
        • Alkali metals more reactive…why do you think?
          • Valence electrons…how many do group 1A elements have?
          • Is this stable?
    •  
    • Transition Elements (Group B)
      • 2 categories
        • Transition metals
        • Inner Transition Metals (2 types)
    • Inner Transition Metals
      • Located along the bottom of the periodic table
      • 2 sets
        • Lanthanide series
          • Top row of the inner transition elements
          • These elements are used as phosphors
            • Substances that emit light when struck by electrons
            • Where have we seen this before?
            • Where do we see this today?
        • Actinide series
          • Bottom row of the inner transition elements
    •  
    • Transition elements
      • All other group B elements that are not inner transition elements
      • Basically the Group B elements we see on the actual periodic table…
        • Think of it as the ‘continental US’
    •  
      • 3 main classifications of elements
        • Metals
        • Nonmetals
        • Metalloids
    • 2. Nonmetals
      • Occupy the upper right side of the periodic table
      • Usually gases
      • Brittle, dull-looking solids
      • Poor conductors of heat and electricity
      • Bromine (Br) is the only nonmetal that is liquid at room temperature
    • Important nonmetals
      • Group 7A
        • Halogens
          • Highly reactive elements
            • What does this mean?
            • Why are they highly reactive?
            • Look at the valence electrons
      • Group 8A
        • Noble gases
          • Highly unreactive
            • Why?
            • 8 valence electrons
      • 3 main classifications of elements
        • Metals
        • Nonmetals
        • Metalloids
    • 3. Metalloids
      • Border the stair-case line
      • Elements with physical and chemical properties of both metals and non-metals
      • Silicon and germanium
        • Two of the most important metalloids
        • Anyone know why?
        • Used in computer chips and solar cells
    •  
    • Everyday Examples
      • Metals?
        • Jewelry
        • Pot and pans
        • Cars
      • Nonmetals?
        • Air we breath
        • Nitrogen
        • Neon signs
        • diamonds
      • Metalloids?
        • Computer chips