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Chapter 3
Periodic Table of Elements
8
Chemistry
9th Grade
01/14/2008

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Term
Periodic Table
Definition
chart listing elements according to their properties
Term
Groups/Families
Definition
vertical columns of elements with the same amount of electrons in the valence shell
Term
Family 1
Definition
Alkali Metals
Term
Family 2
Definition
Alkali Earth Metals
Term
Family 17
Definition
Halogen Family
Term
Family 18
Definition
Noble Gases
Term
Periods
Definition
horizontal rows of elements with the same amount of energy levels
Term
Characteristics of Metals
Definition
1. have 3 or less electrons in valence shell
2. shiny surface
3. conduct heat and electricity
4.
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