Objectives To learn some features of the Periodic Table

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Presentation transcript:

Objectives To learn some features of the Periodic Table To learn some of the properties of metals, nonmetals and metalloids To learn the nature of the common elements

A. Introduction to the Periodic Table The periodic table shows all of the known elements in order of increasing atomic number.

A. Introduction to the Periodic Table The periodic table is organized to group elements with similar properties in vertical columns.

Introduction to the Periodic Table Give the Symbol and Name of 5 Elements from the following Groups Halogens Noble Gases Alkali Metals Transition Metals Alkaline Earths What is the Group number for Oxygen Nitrogen Carbon

A. Introduction to the Periodic Table Most elements are metals and occur on the left side. The nonmetals appear on the right side. Metalloids are elements that have some metallic and some nonmetallic properties.

A. Introduction to the Periodic Table Physical Properties of Metals Efficient conduction of heat and electricity Malleability (can be hammered into thin sheets) Ductility (can be pulled into wires) A lustrous (shiny) appearance

Tightest frying pan roll The tightest circumference of a 30 centimeter (12-inch) aluminium frying pan, rolled with bare hands in 30 seconds is 17.46 centimeters (6.87 inches), set by Scott Murphy at the NXB Team Training Center in Myrtle Beach, S.C., on July 30, 2007. Guinness Book of Records

Elements in the Periodic Table What is the symbol, group number, group name and element classification for:- Sodium Iodine Argon Iron Barium Silicon Uranium Erbium

B. Natural States of the Elements Most elements are very reactive. Elements are not generally found in nature in uncombined form. Exceptions are: Noble metals – gold, platinum and silver Noble gases – Group 8

B. Natural States of the Elements Diatomic Molecules Nitrogen gas contains N2 molecules. Oxygen gas contains O2 molecules.

B. Natural States of the Elements Diatomic Molecules

HONClBrIF HONClBrIF HONClBrIF HONClBrIF HONClBrIF

B. Natural States of the Elements Elemental Solids – Can exist as “Allotropes” Carbon atoms Diamond Graphite Buckminsterfullerene

507-Carat Diamond Found at South African Mine Graphite

Elements in the Periodic Table Give the element classification (metal, non-metal, metalloid) and natural state (solid, liquid, gas, molecule?) of: Potassium Chlorine Neon Tungsten Magnesium Germanium Iodine Mercury