Some images are from 2008 Obtained and made by Mrs. LaRosa.

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Transcript of Some images are from 2008 Obtained and made by Mrs. LaRosa.

Some images are from www.chem4kids.com

www.middleschoolscience.com 2008

Obtained and made by Mrs. LaRosa

Use the periodic table to determine the characteristics of an element

Explain the matter has properties that are determined by the structures and the arrangement of its atoms

http://www.schooltube.com/video/7f5dc6746a0f4482a0ae/Periodic-Table-Song-1

http://www.privatehand.com/flash/elements.html

Explain how elements are arranged on the periodic table

Describe the difference between a period and group

Explain why elements in a group often have similar properties

Describe the properties of the elements in groups of the periodic table

Period GroupPeriodicValence electron (12.1)Alkali metalAlkaline-earth metalHalogen Noble gas

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 family react differently with other elements.

Periodic mean atregular intervals

What do you remember about these from the previous unit? Metals: where are they found on the periodic table?

▪ Properties— ▪ Ductile▪ Conduct Electricity and heat▪ Solid at room temperature▪ Malleable and Shiny!

Non-Metals: where are they found on the periodic table?▪ Properties—

▪ Not malleable or ductile▪ Breakable▪ Not shiny as a solid▪ Poor conductor

Metalloids: where are they found on the periodic table?▪ Properties—

▪ Mixture of the two; Brittle but shiny; semi-conductor of heat and electricity

Group 1 Hydrogen is not a

member, it is a non-metal

1 electron in the outer shell

Soft and silvery metalsVery reactive, esp. with

water Conduct electricity

Image: http://www.learner.org/interactives/periodic/groups2.html

Group 2 2 electrons in

the outer shell White and

malleable Reactive, but

less than Alkali metals

Conduct electricity

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.

Group 3 3 electrons in

the outer shell

Most are metals

Boron is a metalloid

Group 4 4 electrons in

the outer shell Contains

metals, metalloids, and a non-metal Carbon (C)

Group 5 5 electrons in

the outer shell Can share

electrons to form compounds

Contains metals, metalloids, and non-metals

Group 6 6 electrons in

the outer shell Contains

metals, metalloids, and non-metals

Reactive

Group 7 7 electrons in

the outer shell All are non-

metals Very reactive

are often bonded with elements from Group 1

Group 8Exist as gasesNon-metals8 electrons in

the outer shell = Full

Helium (He) has only 2 electrons in the outer shell = Full

Not reactive with other elements

Some are Radioactive

The rare earths are silver, silvery-white, or gray metals.

Conduct electricity