Presentation on theme: "Periodic Table Families"— Presentation transcript:
1 Periodic Table Families Adapted from Liz LaRosaSome images are from2008
2 Learning Scale – I can …4 – Differentiate between the various groups on the periodic table.3 - Describe the various groups on the periodic table.2 - Use the periodic table to determine the number of protons, neutrons, or electrons.1 - Identify patterns on the periodic table.
3 Development of the Periodic Table In 1869, Dmitri Mendeleev noticed that patterns appeared when he arranged the elements in order of increasing atomic mass.In 1913, Henry Moseley rearranged the periodic table according to atomic number.
4 DiscussionWhy do you think that scientists changed how the periodic table was set-up?
5 Organization of the Table Horizontal rows are called periods.Vertical columns are called groups.Atomic Mass= # of protons and neutronsAtomic Number = # of protons (or # of electrons)
6 Characteristics of Metals Luster (shiny)Ductility (ability to be pulled into thin wires)Malleability (ability to be hammered)ConductorAlmost all are solid at room temperature
7 Characteristics of Nonmetals Many are gases at room temperature.Solids are brittleNo luster (dull)Good insulators
8 Characteristics of Metalloids Properties of both metals and nonmetalsSemiconductor – conducts electricity at high temperatures, but not at low temperatures.
9 DiscussionCompare and contrast metals and nonmetals.
10 Families on the Periodic Table Elements on the periodic table can be grouped into families bases on their chemical properties.Each family has a specific name to differentiate it from the other families in the periodic table.Elements in each familyreact differently withother elements.
11 ALKALI METALS Group 1 Hydrogen is not a member Soft and silvery metals Very reactive, esp. with waterConduct electricity1 Valence electronImage:
12 ALKALINE EARTH METALS Group 2 White and malleable Reactive, but less than Alkali metalsConduct electricity2 Valence electrons
13 TRANSITION METALS Groups in the middle (3-12) Good conductors of heat and electricity.
14 BORON FAMILYGroup 133 Valence electronsMost are metals
15 CARBON FAMILY Group 14 4 Valence electrons Contains metals, metalloids, and a non-metal
16 NITROGEN FAMILY Group 15 5 Valence Electrons Contains metals, metalloids, and non-metals
17 OXYGEN FAMILY Group 16 6 Valence electrons Contains metals, metalloids, and non-metalsReactive
18 Halogens Group 17 7 Valence electrons All are non-metals Very reactive -react with metals to form saltoften bonds with Group 1
19 Noble Gases Group 18 Gases Non-metals 8 Valence electrons = Full (except He = 2)Not reactive with other elements
20 Rare Earth Metals Lanthanides & Actinides Some are Radioactive The rare earths are silver, silvery-white, or gray metals.Conduct electricity
21 DiscussionWhat patterns can you identify on the periodic table? Provide evidence.
22 Learning Scale – I can …4 – Differentiate between the various groups on the periodic table.3 - Describe the various groups on the periodic table.2 - Use the periodic table to determine the number of protons, neutrons, or electrons.1 - Identify patterns on the periodic table.