© Stefana Pascale The Periodic Table An Interactive Introduction Directions References Get Started Get Started I’m Done! I’m Done!

Directions: Navigate through the information by using the buttons at the bottom of the screen. Proceed to “Main Menu,” click a topic to get started! If you would like to return to the main menu, click “Main Menu.” If you would like to return to the title page, click “Main Menu” and then “Home” There are several links on each page, be sure to see them all! Proceed to Proceed to Main Menu Main Menu Back

Main Menu Choose an image to get started! HOME Directions The Discovery! The Discovery! Types of Elements Types of Elements Getting Organized! Getting Organized! Naming Groups Naming Groups I already I already saw them all! saw them all!

Dmitri Mendeleev Dubbed the “Father of the Periodic Table” In 1867, he revealed his findings. Came within one vote of being awarded the 1906 Nobel Prize for his work. Next Back

A Walk in Dmitri’s Shoes: Born in Tobolsk, Siberia in Dedicated his life to education and research Graduated from Main Pedagogical Institute with a degree in education. Later became a college professor Next Back

Dmitri’s Posse: Wrote the first list containing 33 elements. Distinguished between metals and non-metals. Lavoisier 1789 Berzelius 1828 Developed a table of atomic weights. Introduced letters to symbolize elements. Next Back

More of Dmitri’s Posse: First to order similiar elements into “Groups” Döbereiner 1829 Newlands 1864 First to order elements with related properties into “Periods” Next Back

What did Dmitri do? He arranged the elements by more than molecular mass. Used note cards for organization. Predicted places and properties for unknown elements. –7 out of 10 were later identified as correct Back Return to Return to Main Menu Main Menu

Types of Elements Back Show me Show me METALS! Show me Show me NON-METALS! Show me Show me METALLOIDS! Return to Return to Main Menu Main Menu For More Information: Click the shaded area of elements you want to know more about!

Metals: Metals makeup more than 75% of the elements in the periodic table. Metals are characterized by the following physical properties. –Metals usually have metallic shine or luster. –They are malleable. This means that metals bent or hammered into different shapes without breaking. –Metals are good conductors of heat and electricity. –Commonly form cations. Copper Back

Non-metals: There are only 17 non-metals in the periodic table. They are characterized by the following physical properties: –Non-metals rarely have a shiny luster. –Their solids are not malleable. They will break, if bent or hammered. –Non-metals are poor conductors of heat and electricity. –Non-metals usually form anions. Sulfur Back

Metalloids: There are only six metalloids on the periodic table. Metalloids have some characteristics of both metals and non-metals. Silicon Back

Organization of the Table Back Show me Show me COLUMNS! Show me Show me ROWS! Return to Return to Main Menu Main Menu For More Information: Click the colored area you want to know more about!

Columns –Columns are organized into “GROUPS” or “FAMILIES” with similar properties. –Elements in the same column share the same chemical properties, such as bonding patterns. –Columns are traditionally were numbered IA through VIIIA with roman numerals. In recent years, numbering them with digits 1-18 is accepted. Back

Rows –Rows are organized into “PERIODS.” –Elements in the same row have properties slowly change from one end to the other of the periodic table. –Traditionally rows are numbered using the digits 1-7. Back

Group Names For More Information: Click the shaded area of elements you want to know more about! Back Show me Show me Alkali Metals Alkali Metals Show me Show me Alkaline-Earth Metals! Show me Show me Transition Metals! Return to Return to Main Menu Main Menu Show me Show me Chalcogens! Show me Show me Rare-Earth Metals! Show me Show me Halogens! Show me Show me Noble Gases! Noble Gases!

Alkali Metals: Alkali metals are in Group 1 of the periodic table. –They are VERY reactive. –They are not found in their elemental form in nature. –Alkali metals are softer than most metals. Sodium Back

Alkaline-Earth Metals: Alkaline-Earth metals are in Group 2 of the periodic table. –They are VERY reactive. –They are not found in their elemental form in nature. –They are called Alkaline-Earth metals because, when dissolved, they almost always form “basic” or “alkaline” solutions. –Alkaline-Earth metals are also very important to animal and plant physiology. Calcium Back

Transition Metals: The transition metals include 38 of the elements on the periodic table. Most of these metals are VERY lustrous. Precious metals like gold, silver, and platinum are transition metals. Unlike most elements, transition metals carry charges that can vary. Gold Back

Rare-Earth Metals: Rare-earth metals are the 14 elements usually represented at the bottom of the periodic table. They are called the “Lanthanide and Actinide series”. Most of the elements in group are man- made. Most of them are very dangerous. Uranium Back

Chalcogens: The word Chalcogens means “ore- formers” because they are often found as parts of minerals. This period is also sometimes called the “Oxygen Family.” Chalcogens include non-metals and some metalloids in Group 16 on the periodic table. Iron Ore Back

Halogens: The halogens are the 5 non-metal elements in Group 17 of the periodic table. Halogens are the most reactive of the non- metals. The term "halogen" means "salt-former.” If a compound is formed with a halogen, it is then called a "salt". Iodine Back

Nobel Gases: Nobel gases are also called “inert” gases, because they are NOT reactive. They are gases at room temperature, and were used as building blocks for many chemical discoveries. Helium Balloons Back

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References: Rader’s Zumdahl, Steven. Chemistry. 6 th Ed. University of Illinois, Jason Smith, Pleasant Valley High School, “Subatomic Particles.” I’m Done! I’m Done! Home