CH. 17-18
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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element | any pure substance that is made of only one kind of atom.
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alchemy | aspects of chemistry, philosphy, religion, metallurgy, medicine and art.
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periodicity | the repitition of certain properties at regular intervals when elements were placed in the order of atomic mass
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metals | belong to families with relitivley few valience electrons.
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nonmetals | hold electrons tightly, properties are very different from metals.
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periods | ---- horizontal rows of elements ----
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electronn affinity | deals with the strength of the attracton of electrrons
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chemical symbols | berzelium's notation consisting of one or two letters derived from the elements name
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monatomic | occur as single atoms
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diatomic | hydrogen nitrogen oxygen fluorine chlorine bromine iodine
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octet rule | full 8 electrons in their valence electricity level
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electron affinity | how well it holds and attracts electrons
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electronegativity | an atoms ability to attract and hold atoms when bonded to other atoms
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ionic bond | between metals and nonmetals
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covalent bond | mostly between nonmetals
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metallic bond | atoms bond by sharing their easily lost electrons among atoms
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Lewis structure | molecular notation
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double bonds | stronger than single bonds
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triple bonds | each atom must share three electrons to complete its octet
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polyatomic molecules | molecules made up of three or more atoms
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polar covalent bond | uneven electron sharing
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nonpolar bonds | bonds with no polarity. formed by diatomic elements
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covalent compounds | consist of covalently bonded molecules
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ionic compounds | formed by ionic bonds
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crystal lattice | mobile ions clump together with opposite charges
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formula unit | the smallest ratio of elements in an ionic compound
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unit cells | groupings of ions
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electron sea theory | a model of the bonding of metals and their properties
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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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Created by:
colinamason
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