The Periodic Table
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Created by:
volleygal1233 on February 17, 2011
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54 terms
Terms | Definitions |
|---|---|
 triads | elements that are grouped in 3's |
| chemical and physical properties | triads had similar? |
| bromine, iodine, and chlorine | halogen triad includes what 3 elements |
| similar properties, an orderly pattern | Dobereiner grouped elements with ________ and revealed _____________ |
| atomic mass | Dobereiner linked elements according to their |
| Demitri Mendeleev | invented the periodic table |
| properties | Mendeleev organized elements by |
| atomic mass | Mendeleev arranged elements by |
| periodicity | tendency to reoccur at regular intervals |
| henry moseley | determined the 1st of the atomic numbers of the elements |
| active metal, noble gas | each row begins with a _____ and ends with a ______ |
| periodic law | physical and chemical properties of the elements repeat in a regular pattern when they're arranged in order of increasing atomic number |
| their x-ray spectra | how'd moseley determine the atomic number of elements |
| battle of gallipoli | when was moseley killed |
| verticle (up & down) | columns are _____ |
| 18 | how many families are their |
| columns | families=? |
| more active | in columns, elements get __________ as you go down |
| periods | rows=? |
| 7 | how many periods are there |
| active solid, inactive gas | 1st element in the row is an ________ , the last element is a ____________ |
| metal | shiny |
| metal | transfer heat and electricity well |
| metal | have a high density |
| metal | have high melting points |
| metal | malleable |
| metal | tend to lose their outermost electron |
| nonmetal | no luster, dull |
| nonmetal | don't conduct heat or electricity well |
| nonmetal | brittle |
| nonmetal | not ductile or malleable |
| nonmetal | low density |
| nonmetal | low melting points |
| nonmetal | tend to gain electrons |
| metalloids | elements with properties of metals and nonmetals |
| metalloids | along the zig zag staircase |
| metalloids | conduct heat and electricity better than nonmetals |
| alkali metals | family 1 with 1 v.é, +1 charge |
| alkaline earth metals | family 2 with 2 v. é, +2 |
| transition metals | elements that don't fit into any family, most hav 1 or 2 v. é, can share electrons |
| boron family | family 13 (3A) with 3 v. é, lose 3 electrons, +3 charge |
| boron | metalloid that restores metals |
| aluminum | most abundant metal |
| carbon family | family with 14 (4A) v. é, lose or gain 4 é, +/- charge |
| tin | used to prevent rust |
| nitrogen family | family 15 (5A) with 5 v.é |
| nitrogen | most abundant element in the atmosphere and is a diatomic element |
| oxygen family (chalcogens) | family 16 (6A) , gain 2 electrons, -2 charge |
| oxygen | most abundant element in earth's crust, diatomic |
| halogens | family 17 (7A) with 7 v.é, most nonactive metals |
| noble gases (inert gases) | family 18 with 8 v.é, unreactive |
| rare earth metals | at bottom of the periodic table |
| lanthanide series | top group of inner transition metals, used in alloys and high quality glass |
| actinide | bottom group of inner transition metals, all radioactive |
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