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Lewis Dot Structure Vocab
http://www.wisc-online.com/objects/ViewObject.aspx?ID=GCH6404
19
Chemistry
11th Grade
02/11/2011

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Cards

Term
What are Atoms made up of?
Definition
protons, neutrons and electrons
Term
Locate: Protons and Neutrons.
Definition
In the center of the atom (Nucleus)
Term
What is the name of the center of an atom?
Definition
Nucleus
Term
What do electrons do?
Definition
Occupy the space surrounding the nucleus at varying distances.
Term
What do electrons divide into?
Definition

core electrons

or

valence electrons

Term
valence electrons are...
Definition
the outermost electrons and the ones involved in chemical reactions
Term
Electrons occupy most of the ________ of an atom. They arrange themselves in ______ at varying distances from the nucleus.
Definition
Electrons occupy most of the volume of an atom. They arrange themselves in "shells" at varying distances from the nucleus.
Term
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Definition
Term
How do you represent valence electrons in a lewis dot structure?
Definition
the group number = valence electrons.
Term
"He" is in group 8 but how many valence electrons does it really have?
Definition
2!
Term
which of the group numbers are extremely stable?
Definition
Group 8 because they have full valence shells
Term
What is the "octet rule"
Definition
elements react in a way to attain the electron configuration of Group 8
Term
Metallic elements to the right or to the left tend to lose one or more electrons to form positive ions.
Definition
The left. they tend to lose one or more electrons to form positive ions such as Na+ and Mg2, each of which has the electron configuration of the Noble Gas that preceeds it
Term
Nonmetals to the left or right of the table tend to either gain electrons to form negative ions or to share electrons in covalent bonds
Definition
Right.
Term
FACT: When nonmetallic elements react with other nonmetallic elements, they share electrons in order to obtain 8 valence electrons
Definition
Term
How many valence electrons are needed to satisfy the Octet Rule?
Definition
8!
Term
What is a Covalent Bond?
Definition

When valence electrons form together to form the right number of electrons together. ie-

:F:F:

Term
What are the UNshared electrons called?
Definition

Lone Pairs

 

:F:F:

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