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18 Cards in this Set
- Front
- Back
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Ionic bond |
Transfer of electrons between a metal and a non metal |
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Covalent bond |
Sharing of electrons between two nonmetals |
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Electron dot structures |
Valence electrons are represented by dots placed around the chemical symbol |
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Octet rule |
When atoms combine to form molecules they generally each lose, gain, or share valence electrons until they attain or share eight |
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Metallic bonds |
Chemical bonding that holds the atoms of a metal together. Metallic bonds are formed from the attraction between mobile electrons and fixed, positively charged metallic atoms |
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Alloys |
A substance composed of two or more metals most of the time a less costly metal mixed with a more valuable one |
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Diatomic molecule |
Composed of only two atoms, or either the same or different chemical elements |
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Structural formula |
A formula that shows the arrangement of atoms in the molecule of a compound |
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Unshared pair |
A pair of valence electrons that are not shared with another atom and is sometimes called a non-bonding pair |
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VSEPR theory |
Assumes that each atom in a molecule will achieve a geometry that minimizes the repulsion between electrons the valence shell of that atom |
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Nonpolar covalent bond |
Are a type of chemical bond where two atom share a pair of electrons equally with eachother |
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Polar covalent bond |
Type of chemical bond where a pair of electrons is unequally shared between two atoms |
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Polar molecule |
An asymmetrical molecule that has a partial positive charge in one part of the molecule and complementary negative charge in another part |
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Dipole |
A molecule having two charges or poles |
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Dipole interactions |
A weak intermolecular force of attraction between a partial positive (d+) charge on one particle and a partial negative (d+) charge n a second particle |
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Dispersion forces |
(Also called London dispersion forces) Dispersion is an intermolecule attraction force that exists between all molecules. These forces are the result of the movement of electrons which cause slight polar moments. |
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Hydrogen bonds |
A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other |
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Network solid |
Atoms are bonded by convalent bonds in a continuous network extending throughout the material. In a network solid there are no individual molecules, and the entire crystal may be considered a macro molecule. |
