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Chem U2 Vocab
Chemistry Bonding Vocabulary
Term | Definition |
---|---|
Chemical Bond | An electrical force linking atoms together. Many different types. ALL involve electrons! |
Covalent Bond | Bond that results from the sharing of electron pairs between two (or more) NONMETALS. |
Polarity | Describes how equally bonding electrons are shared between atoms. |
Hydrogen Bonding | Hydrogen Bonding#Weak attraction between partial (δ+ and δ-) charges in water (and related) molecules. |
Molecule | Simplest structural unit of an element or compound. Can be one atom, or more than one atom. |
Diatomic | Molecule made of two atoms. Di-two atomic-atoms. Oxygen, Nitrogen, Chlorine, Fluorine, and Chlorine are diatomic molecules. |
Monatomic | Molecule made up of only one atom. Noble gasses are key examples of monatomic molecules. |
Octet Rule | Atoms will lose, gain, or share electrons in order to achieve a full valence shell. |
Ionic Bond | Bond that results from electrical attraction between cations and anions. Held together by electrostatic attraction. |
Single Covalent Bond | Bond where nonmetals share a pair (2) of electrons. |
Double Covalent Bond | Bond where nonmetals share two pairs (4) of electrons. |
Triple Covalent Bond | Bond where nonmetals share three pairs (6) of electrons. |
Nonpolar Covalent Bond | Bond where electrons are shared equally by bonded atoms. |
Polar Covalent Bond | Bond where electrons are shared unequally by bonded atoms. |
Electrostatic Attraction | Force between atoms of opposite charges, holds atoms together in ionic bonds. |
0.0 – 0.5 | Electronegativity difference in a nonpolar covalent bond. |
0.5-1.5 | Electronegativity difference in a polar covalent bond. |
> 1.5 | Electronegativity difference in an ionic bond. |
Polyatomic Ions | Ions made of more than one atom. |
Metallic Bonding | Bond resulting from the attraction of metal atoms and the sea of electrons. |
Crystal Lattice | The unique repeating pattern in the arrangement of atoms in an ionic compound. |
Delocalized Electrons | Electrons that are not associated with a single atom or one covalent bond. |
Salt | Ionic compound, produced by electron transfer of nonmetal and metal atom. |
Dissociate | Ionic compounds dissociate (separate) when dissolved in water. |
Electrolyte | Solution of ionic compound which conducts electricity. |
Intermolecular Force | Holds different molecules together. Fights against molecular motion holding molecules in place. Present in solids and liquids, nearly absent in gasses. |
Molecular Motion | Temperature-dependent movement of molecules. Fights against intermolecular forces. |