Vocabulary Ch 4: Chemistry an Introduction Timberlake
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Anion | Any negatively charged ion
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| Bent | shape of molecule with 2 bonded atoms and 2 lone pairs
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| Cation | Any positively charged ion
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| Dipole | separation of positive and negative charges in polar bond, arrow indicates the more negative
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| Dipole-Dipole Attraction | Attractive forces between oppositely charged ends of polar molecule
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| Dispersion Forces | Weak dipole bonding that results in momentary polarization of non polar molecules in a substance
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| Double Bond | Sharing of 2 pairs of electrons by two atoms
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| Electronegativity | Relative ability of an element to attract electrons in a bond
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| Hydrogen Bond | Attraction between a partially positive H and a strong electronegative: F, O or N
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| Ion | Atom or group of atoms having an electrical charge because of a loss/gain of an electron
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| Ionic Charge | Difference between number of protons and electrons in an ion
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| Molecule | smallest unit of two or more atoms held together by covalent bond
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| Nonpolar covalent bond | Covalent bond with equally shared electrons. Electronegativity: 0.0-0.4
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| Nonpolar molecule | molecule has only nonpolar bonds or dipoles cancel
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| Octet | 8 valence electrons
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| Octet Rule | Elements in Groups 1A-7A reacts with others to achieve a noble gas arrangement, typically 8 valence electrons
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| Polar Covalent Bond | Electrons shared unequally between atoms. Electronegativity: 0.4-1.8
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| Polar Molecule | Molecule where dipoles do not cancel
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| Polyatomic Ion | Group of covalently bonded nonmetals that has an overall electrical charge
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| Triple Bond | Sharing of 3 pairs of electrons by 2 atoms
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| Valence-Shape Electron-Pair Repulsion Theory (VSEPR) | theory that predicts the shape of molecules by placing electron pairs on central atom as far apart as possible to minimize the mutual repulsion of the electron
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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