chapter 7 Chemistry
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 | an ion that has a negative
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| Cation | an ion that has a positive charge
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| chemical bond | the force that holds two atoms together; may form by the attraction of a positive ion for a negative ion or by sharing electrons
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| crystal lattice | a three-dimensional geometric arrangement of particles in which each positive ion is surrounded by negative ions and each negative ion is surrounded by positive ions; vary in shape due to sizes and relative numbers of the ions bonded
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| electrolyte | an ionic compound whose aqueous solution conducts an electric current
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| ionic bond | the electrostatic force that holds oppositely charged particles together in an ionic compound
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| ionic compound | compounds that contain ionic bonds
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| Lattice energy | the energy required to separate on mole of the ions of an ionic compound, which is directly related to the size of the ions bonded and is also affected by the charge of the ions
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| formula unit | the simplest ratio of ions represented in an ionic compound
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| monatomic ion | an ion formed from only one atom
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| oxidation number | the positive or negative charge of a monatomic ion
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| oxyanion | a polyatomic ion composed of an element, usually a nonmetal, bonded to one or more oxygen atoms
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| polyatomic ion | an ion made up of two or more atoms bonded together that acts as a single unit with a net charge
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| Alloy | a mixture of elements that has metallic properties; most commonly forms when the elements are either similar in size (substitutional alloy) or the atoms of one element are much smaller than the atoms of the other (interstitial alloy)
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| delocalized electron | the electrons involved in metallic bonding that are free to move easily from one atom to the next throughout the metal and are not attached to a particular atom
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| electron sea model | proposes that all metal atoms in a metallic solid contribute their valence electrons to form a "sea" of electrons, and can explain properties of metallic solids such as malleability, conduction, and ductility
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| metallic bond | the attraction of a metallic cation for delocalized electrons
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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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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.
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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