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Vocab: U5
Vocabulary for Chemistry
| Term | Definition |
|---|---|
| chemical bond | Any of several forces, especially the ionic bond, covalent bond, and metallic bond, by which atoms or ions are bound in a molecule or crystal. |
| ionic bond | A chemical bond between two ions with opposite charges. Characteristics: electrons are transfered. crystal lattice. strong forces hold the ions together. High melting and Boiling points. hard. cunduct electricity when melted. easily dissolvable |
| covalent bond | A chemical bond formed by sharing of one or more electrons, especially pairs of electrons, between atoms Characteristics: Weak. low melting an boiling points. Easily crushable. soft. do not conduct electricity. |
| metallic bond | The chemical bond characteristic of metals, in which mobild valence electrons are shared amond atoms in a usually stable crystalline structure Characteristics: Luster. malleable. conductors. ductile |
| hydrogen bond | A chemical bond in which a hydrogen atom of one molecule is attracted to an electronegative atom, especially nitrogen, oxygen, or fluorine atom, usually of another molecule |
| delocalized | electrons in a molecule or solid metal that are not associated with a single atom or one covalent bond. |
| crystal lattice | A geometric arrangement of the points in space at which the atoms, molecules, or ions of a cystal occur |
| luster | a radiant brightness or glow, usually due to light reflected from a smooth surface |
| malleable | Capable of being shaped or formed, as by hammering or pressure |
| ductile | easily drawn to wire or hammered thin |
| volatile | evaporating readily at normal temperatures and pressures |
| ion | An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons |
| cation | An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis |
| anion | A negatively charged ion, epecially the ion that migrates to an anode in electrolysis |
| intermolecular force | The force between two molecules; it is that negative gradient of the potential energy between the interacting molecules, if energy is a function of the distance between the centers of the molecules |
| London-dispersion force | a weak intermolecular force arising from quantum induced instantaneuous polarization multipoles in molecules |
| polar | relating to or characterized by a dipole |
| nonpolar | Not characterized by a dipole |
| Electron dot diagram | A structural formula in which electrons are represented by dots, two dots between atoms represent a covalent bond. also known as electron-dot formula; lewis formula |
| Lewis structure | A structural formula in which electrons are represented by dots, two dots between atoms represent a covalent bond. also known as electron-dot formula; lewis formula |
| ionic | Greater than or equal to 1.7 |
| polar covalent | between 1.7 and 0.3 |
| non polar covalent | less than or equal to 0.3 |
Created by:
ii_UnkownWaterz
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