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Periodic Law- http://chemistry.about.com/od/chemistryglossary/g/periodic-law-definition.htm
Group on Periodic table- http://chemistry.about.com/od/periodicproperties/fl/Periodic-Table-of-Groups-of-Elements.htm
Non-Metals- http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/metal.html
Metals- http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/metal.html
Metalloids- http://www.elementalmatter.info/properties-of-metalloids.htm

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1) The law that the properties of the elements are periodic functions of their atomic numbers.
2) The Periodic Law states that the physical and chemical properties of the elements

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1) In chemistry, a group also known as a family is a column of elements in the periodic table of the chemical elements.
2) There are 2 different groups on the periodic table.
3) Groups/Family and Periods.

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1) They are the horizontal row on the periodic table.
2) The periods are numbered 1 through 7 on the left hand side of the table.
3) Elements that are in the same periods have chemical properties that are not all that similar.

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1) Can be observed without changing the substance of the elements in a group into other substances.
2) Can be observed using our senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor.

1) Chemical properties are only observable during a chemical reaction.
2) Changes brought about by burning, rusting, heating, exploding, and tarnishing.

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1) Usually have 4-8 electrons in their outer shell.
2) Form oxides that are acidic.
3) Are good oxidizing agents.

1) Poor conductors of heat and electricity.
2) Brittle if a solid.
3) Non ductile.

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1) Usually have 1-3 electrons in their shell.
2) Lose their valence electrons easily.
3) Are good reducing agents.
4) Form oxides that are basic.

1) Posses metallic luster.
2) Ductile- can be stretched into wire.
3) Opaque as thin sheet.
4) Malleable- can be beaten into thin sheets.