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12 Cards in this Set
- Front
- Back
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Van der Waals Forces |
Weak attractive forces between molecules resulting from the formation of temporary dipoles |
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Hydrogen Bonds |
Particular types of dipole - dipole between molecules in which the hydrogen atoms are bonded to nitrogen, oxygen or fluorine. The hydrogen atom carries a partial positive charge and is attracted to the electronegative atom in another molecule. Thus, it acts as a bridge between 2 electronegative atoms |
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Electronegativity |
The relative attraction that an atom in a molecule has, for the shared pair of electrons in a covalent bond |
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Compound |
A substance that is made up of two or more different elements combined together chemically |
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Octet Rule |
When bonding occurs, atoms tend to reach an electron arrangement with eight electrons in the outermost shell |
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Ion |
An ion is a charged atom or group of atoms. A cation is a positive ion while an anion is a negative ion |
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Ionic Bond |
The force of attraction between oppositely-charged ions in a compound. Ionic bonds are always formed by transfer of electrons from one atom to the other |
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Transition Metal |
A metal that forms at least 1 ion with a partially-filled d sublevel |
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Valency |
Defined as the number of atoms of hydrogen or any other monovalent element with which each atom of the element combines |
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Molecule |
A group of atoms joined together. It is the smallest particle of an element that can exist independently |
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Polar Covalent Bond |
A bond in which there is unequal sharing for the pair (or pairs) of electrons |
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Covalent Bond |
One or more shared pairs of electrons with each of the atoms in the bond contributing electrons towards the shared pair. Covalent bonds may be either pure or polar. |
