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chapter 1- Atoms and Bonding
science
17
Science
8th Grade
01/08/2008

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Term
Atom
Definition
The smallest part of any element that retains all the properties of that element
Term
Chemical Bonding
Definition
Combining of atoms of elements to form new substances
Term
Valence Electron
Definition
Electron in the outermost energy level of an atom
Term
Ionic Bonding
Definition
Bonding that involves the transfer of electrons
Term
Ion
Definition
An atom that has become charged due to the loss or gain of electrons
Term
Ionization
Definition

Process of removing electrons and forming ions

Term
Ionization Energy
Definition
Energy required for ionization
Term
Electron Affinity
Definition
Tendency of an atom to attract electrons
Term
Crystal Lattice
Definition
Regular, repeating arrangement of atoms
Term
Covalent Bonding
Definition
Bonding that involves the sharing of electrons
Term
Electron- dot diagram
Definition
DIagram that uses the chemical symbol for an element surrounded by a series of dots to represent the electron sharing that takes place in a covalent bond
Term
Diatomic Element
Definition
Element whose atoms can form covalent bonds with another atom of the same element
Term
Molecule
Definition
Combination of  atoms formed by a covalent bond
Term
Network Solid
Definition
Covalent substance whose molecules are very large because the atoms involved continue to bond to one another; have rather high melting points.
Term
Polyatomic Ion
Definition
Group of covalently bonded atoms that acts like a single atom when combining with other atoms
Term
Metallic Bond
Definition
Bond formed by atoms of metals, in which the outer electrons of the atoms form a common electron cloud.
Term
Oxidation Number
Definition
Number of electrons an atom gains, loses, or shares when it forms chemical bonds
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