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Chemistry Unit 6
Unit 6 From The Review Book
15
Chemistry
10th Grade
01/12/2011

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Term
Hydrogen Bond
Definition
The electrical attraction between the slightly positive hydrogen atoms of one molecule and a slightly negative atoms in another molecule.
Term
Covalent Bond
Definition
a chemical bond that involves sharing a pair of electrons between atoms in a molecule; Between non metal atoms
Term
Non Polar / Polar Covalent Bond
Definition
Polarity of covalent bonds are determined by difference in electronegativity.
1.7-0.4 (polar/unequal sharing)
<0.4 (non polar/equal sharing)
Term
Double Covalent Bond
Definition
A double covalent bond consists of two pairs of shared electrons.
Term
Triple Covalent Bond
Definition
A triple covalent bond consists of three pairs of shared electrons.
Term
Multiple Covalent Bond
Definition
Molecules share more than one pair of electrons in order to achieve full shells of electron.
Term
Asymmetrical Molecule
Definition
Polar molecule
Term
Symmetrical Molecule
Definition
Non polar molecule
Term
Ionic Bond
Definition
A chemical bond in which one atom loses an electron to form a cation and the other atom gains an electron to form an anion.
Term
Ion
Definition
An atom or molecule or group that has lost or gained one or more electrons.
Term
Lewis Dot Diagram
Definition
Show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule.
Term
Metallic Bond
Definition
A chemical bond in which mobile valence electrons of metal atoms are shared.
Term
Malleability
Definition
The property of something that can be worked or hammered or shaped without breaking.
Term
Octet
Definition
In Lewis structures, the goal is to make almost all atoms have an octet. This means that they will have access to 8 electrons regularly, even if they do have to share some of them.
Term
Octet Rule
Definition
Atoms tend to combine in such a way that they each have eight electrons in their valence shells, giving them the same electronic configuration as a noble gas.
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