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Chemistry Ch. 5
| Term | Definition |
|---|---|
| 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 |
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sophielil
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