lunes, 22 de febrero de 2016

The organization of the Periodic Table


Complement the topic studying the next web page:

Play and Learn the Groups of the Periodic Table


Visit the next link to play and learn the groups of the elements of the Periodic table.


The History of the Periodic Table

Observe the next video to learn about the Periodic Table and its history; then take some notes about it on your notebook:


The Groups of the Periodic Table

The Periodic Table has a classification, according to the properties of the elements they are organizing by groups. 

Let's learn some characteristics of each group:



1. Alkali Metals:



Group 1
—Hydrogen is not a member, it is a non-metal
—1 electron in the outer shell
—Soft and silvery metals
Very reactive  with water

—Conduct electricity
   
2. Alkaline Earth Metals:


Group 2
2 electrons in the outer shell
White and malleable
Reactive, but less than Alkali metals
Conduct electricity




3. Boron Family:





Group 3 0r 13
3 electrons in the outer shell
Most are metals


Boron is a metalloid


4. Carbon Family:



Group 4 or 14
4 electrons in the outer shell
Contains metals, metalloids, and a non-metal Carbon (C)


5. Nitrogen Family:


Group 5 or 15
5 electrons in the outer shell
Can share electrons to form compounds
Contains metals, metalloids, and non-metals

6. Oxygen Family:


Group 6 or 16
6 electrons in the outer shell
Contains metals, metalloids, and non-metals
Reactive

7. Halogens:

Group 7 or  17
7 electrons in the outer shell
All are non-metals
Very reactive are often bonded with elements from Group 1


8. Noble gases:


Group 8 or 18
Exist as gases
Non-metals
8 electrons in the outer shell = Full
Helium (He) has only 2 electrons in the outer shell = Full
Not reactive with other elements


Group of Transition metals and Group of Rare earth 

Groups in the middle
Good conductors of heat and electricity.
Some are used for jewelry.
The transition metals are able to put up to 32 electrons in their second to last shell.
Can bond with many elements in a variety of shapes.
The last two rows are the Rare earth metals the first is called Lanthanides and the second is called Antinides.
Some are Radioactive
The rare earths are silver, silvery-white, or gray metals.
Conduct electricity.