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Chemistry Ch. 5

Compound a substance that is made up of two or more different elements chemically combined
Octet Rule when bonding occurs, atoms tend to reach an electron arrangement with 8 electrons in the outermost shell
ion a charged atom or group of atoms
Ionic bond the force of attraction between oppositely charged ions in a compound
Transition Metal one that forms at least one ion with a partially filled d-sublevel
molecule a group of atoms joined together. It is the smallest particle of an element or compound that can exist independently
valency the number of atoms of hydrogen or any other monovalent element with which each atom of an element combines
electronegativity the relative attraction that an atom in a molecule has for the shared pair of electrons in a covalent bond
Van der Waals forces weak attractive forces between molecules resulting from the formation of temporary dipoles
dipole-dipole forces forces of attraction between the negative pole of one molecule and the positive pole of another
hydrogen bonds particular types of dipole-dipole attractions between molecules in which hydrogen is bonded to nitrogen, oxygen or fluorine. The hydrogen atom carries a partial positive charge and is attracted to the electronegative atom in another molecule.
hydrogen bonds contd. Thus, it acts as a bridge between two electronegative atoms
Created by: sophielil