1. Intro to the Periodic Table
Dimitri Mendeleev- recognized creator of the Periodic Table
* A special way to organize elements based on their chemical and physical properties

2. T h e P e r i o d i c T a b l e
Each small square on the periodic table shows the name of one element and the letter symbol for the element.

3. Introduction to Periodic Table

4. Introduction to Periodic Table
You have been learning the names and symbols of the 50 important elements during the course of the class.
It will help to prepare you for writing formulas and balancing equations later.
Song

5. Introduction to Periodic Table
Groups (families)
The vertical columns of the periodic table
they are numbered from 1-18 from left to right
each group contains elements with similar chemical properties

6. Introduction to Periodic Table
Periods
The horizontal rows of elements in the periodic table
physical and chemical properties change somewhat regularly across a period

7. Introduction to Periodic Table
The periodic table is broadly divided into two main sections: metals and nonmetals.
Metal
An element that is a good conductor of heat and electricity
are located at the left and in the center of the table
most are solid at room temperature, are malleable, ductile, have luster

8. Introduction to Periodic Table

9. Introduction to Periodic Table
Nonmetal
An element that is a poor conductor of heat and electricity
are located at the far right side of the table

10. Introduction to Periodic Table

11. Introduction to Periodic Table
Metalloid
An element that has some characteristics of metals and some characteristics of nonmetals
located along the stair-step line at the right side of the table
tend to be semiconductors of electricity

12. Introduction to Periodic Table

13. Introduction to Periodic Table
Alkali Metals
The elements in Group 1
Very reactive - get more reactive as you move down the group
Alkaline Earth Metals
The elements in Group 2
Magnesium is required for photosynthesis
Calcium is used by your body to build strong bones, send nerve signals, and help muscles contract

14. Introduction to Periodic Table
Transition Metals
The elements in Group 3-12
Wide range of properties
Mostly shiny and good conductors
Lanthanides and Actinides
Lanthanides are shiny and reactive
Actinides are radioactive
Elelments 95 and beyond
Manufactured in a lab

15. Introduction to Periodic Table
Boron Family
The elements in Group 13
Aluminum is the most common metal in Earth’s crust – strong, light weight and a good conductor
Carbon Family
The elements in Group 14
Carbon is a non-metal – Silicon and Germanium are metalloids – Tin and Lead are metals
Life is based on carbon – Silicon is the second most abundant chemical in Earth’s crust

16. Introduction to Periodic Table
Nitrogen Family
The elements in Group 15
Nitrogen and Phosphorus are nonmetals (and both part of fertilizers)
Arsenic and antimony are metalloids – Bismuth is a metal
Oxygen Family
The elements in Group 16
Oxygen, Sulfur, and Selenium are nonmetals
Tellurium and Polonium are metalloids
Oxygen is the most common element in Earth’s crust

17. Introduction to Periodic Table
Halogens
The elements in Group 17
Fluorine and Chlorine are gases
Bromine is a liquid but it evaporates quickly
Iodine is a solid that sublimates (need for your thyroid)
All of them are very reactive
Noble Gases
The elements in Group 18
are gases at room temperature and generally unreactive
Colorless and odorless