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Chemistry Vocab 8
Term | Definition |
---|---|
Covalent Bond | A bond formed by the sharing of electrons between atoms. |
Molecule | A neutral group of atoms joined together by covalent bonds. |
Diatomic Molecule | A molecule consisting of two atoms. |
Molecular Compound | A compound that is composed of molecules. |
Molecular Formula | A chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of a compound. |
Single Covalent Bond | A bond formed when two atoms share a pair of electrons. |
Structural Formula | A chemical formula that shows the arrangements of atoms in a molecule or a polyatomic ion; each dash between a pair of atoms indicates a pair of shared electrons. |
Unshared Pair | A pair of valence electrons that is not shared between atoms. |
Double Covalent Bond | A bond in which two atoms share two pairs of electrons. |
Triple Covalent Bond | A covalent bond in which three pairs of electrons are shared by two atoms. |
Coordinate Covalent Bonds | A covalent bond in which one atom contributes both bonding electrons. |
Polyatomic Ion | A tightly bound group of atoms that behaves as a unit and has a positive or negative charge. |
Bond Dissociation Energy | The energy required to break the bond between two covalently bonded atoms; this value is usually expressed in kJ per mol of substance. |
Resonance Structure | One of the two or more equally valid electron dot structures of a molecule or polyatomic ion. |
Molecular Orbital | An orbital that applies to the entire molecule. |