Presentation on theme: "Organizing the Elements. Drill # 3910/22/14 1. Use the periodic table to answer the following questions. 2. Name, period, and group of element #88? _________,"— Presentation transcript:
Drill # 3910/22/14 1. Use the periodic table to answer the following questions. 2. Name, period, and group of element #88? _________, ___, ____ 3. Element name, symbol, and atomic # in group 6A (or 16) and period 3? __________, _____, _____ 4. Element name, symbol, and atomic # in group 8A (or 18) and period 1? __________, _____, _____
Topic: Organizing the Elements Objective: SWBAT Explain how the periodic table is organized Identify the main blocks in the periodic table HW: Draw a labeled diagram of the periodic table.Don’t include specific elements but do include periods, groups, and the main blocks
The Modern Periodic Table The Periodic Table is a listing of all the known elements. The elements are organized by: Atomic number Chemical Properties
Who created it? First some individual elements were discovered. By 1860 about 60 elements were known. In 1869, Russian chemist Dimitri Mendeleev proposed arranging elements by atomic weights and properties. The table contained gaps but Mendeleev predicted the discovery of new elements.
Periods = Rows The bottom two rows actually fit in the gap shown in periods 6 and 7 They are pulled out so that the periodic table is shorter
GP: Filling in the Periodic Table We will cut a blank periodic table and reassemble it as it should be (stretch it) Next, we will fill out the atomic numbers in proper order Materials: Blank table Scissors Long paper Tape or glue Pencil
Now cut out the extra margins and glue the table in the long paper
1.Number all boxes in the following order: 2.Start at the top left = 1 3.Skip over to finish the first period on the right = 2 4.Start a new period on the next line 5.…keep going in order… Write in pencil that can be erased and don’t press too hard !!
Color and label the main blocks page 163 Include a color code key Choose your own colors
Did we achieve? Objective: SWBAT Explain how the periodic table is organized Identify the main blocks in the periodic table HW: Draw a labeled diagram of the periodic table.Don’t include specific elements but do include periods, groups, and the main blocks
ET: To get credit you must work quietly in your seat and answer in complete sentences 1. How many periods are in the periodic table? 2. What period are the lanthanides in? 3. Why do we list the lanthanides and actinides under the main table?
Groups = Columns (called Families) The elements in a group have the same number of electrons in their outer orbital. Every element in the first column (group one) has one electron in its outer shell. Every element on the second column (group two) has two electrons in the outer shell. As you keep counting the columns, you'll know how many electrons are in the outer shell. There are some exceptions to the order when you look at the transition elements, but you get the general idea. transition elements
Metals, Nonmetals, and Semi-metals Metals are on the _________ side of the stair- step ____________ is the only nonmetal on the ___________ side ______________ are on the right of the stair-step Semi-metals or _____________ touch the stair-step Hydrogen Nonmetals left metalloids metal
ALKALI METALS Group 1 Hydrogen is _____a member, it is a non-metal _____ electron in the outer shell Soft and silvery _________ Very _____________, especially with water Conduct _____________ NOT 1 metals reactive electricity
ALKALINE EARTH METALS Group 2 ____ electrons in the outer shell White and malleable (able to be ___________ Reactive, but less than Alkali metals Conduct electricity 2 molded
TRANSITION METALS Groups in the middle Good conductors of heat and electricity Some are used for _____________ The transition metals are able to put up to _____ electrons in their second to last shell Can ________ with many _________in a variety of shapes jewelry 32 bond elements
BORON FAMILY Group 3 ____ electrons in the outer shell ______ are metals Boron is a ____________ _ 3 Most metalloid
CARBON FAMILY Group 4 ___ electrons in the outer shell Contains metals, metalloids, and a ____________ _Carbon (C) 4 Non-metal
NITROGEN FAMILY Group 5 ____ electrons in the outer shell Can _________ electrons to form compounds Contains metals, metalloids, and non-metals 5 share
OXYGEN FAMILY Group 6 ____ electrons in the outer shell Contains metals, metalloids, and non-metals ____________ _ 6 Reactive
Halogens Group 7 ____ electrons in the outer shell _____ are non- metals ________ ____________- are often bonded with elements from Group 1 7 ALL VERY REACTIVE
Noble Gases Group 8 Exist as gases Non-metals ____ electrons in the outer shell = _________ Helium (He) has only ____ electrons in the outer shell = Full ____ ___________ with other elements 8 FULL 2 NOT REACTIVE
Rare Earth Metals (Special rows on the Periodic Table) Some are ___________ __ The rare earths are silver, silvery- white, or gray metals. Conduct electricity Actinides Lanthanides radioactive