Set: Periodic Table 3

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All 19 Terms

Term Definition
alkali metals Silvery solids with low densities and low melting points found in Group 1
alloy A mixture of two or more elements,one of which is a metal
ductile , Capable of being drawn out, as into wire or a thread.
atomic number Basis for arranging elements in modern periodic table
actinides Radioactive, unstable elements in transition metals
group A vertical row of elements in the periodic table, elements in group share chemical properties, also called a family
halogens Group of elements that form salt
hydrogen Only nonmetal in group 1
lanthanides Series of elements that are sometimes called rare earth elements
malleable Capable of being shaped or bent or drawn out
metals They are shiny, ductile, malleable, good conductors of thermal energy
metalloids Have characteristics of both metals and nonmetals
noble gases These elements do NOT react with any other elements.
nonmetals Not malleable, not ductile, not shiny, poor conductors of thermal energy and electric current,
periods Horizontal rows of periodic table; within period, elements near each other have similar properties
mass number The total number of protons and neutrons in an atom's nucleus
representative elements A group in the periodic table which includes metals, metalloids, and nonmetals
semiconductors Elements that show moderate electrical conductivity
transition elements Elements in Groups 3-12 of the periodic table

Set Information

Terms 19
Creator sense329
Created November 20, 2007
Group St. Gerard 8th Grade 2007-08
Tags test, science, grade, 8th
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St.Gerard
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Most Missed Words

  1. actinides → Radioactive, unstable elements in transition metals - 2 misses
  2. malleable → Capable of being shaped or bent or drawn out - 2 misses
  3. noble gases → These elements do NOT react with any other elements. - 2 misses
  4. alkali metals → Silvery solids with low densities and low melting points found in Group 1 - 1 miss
  5. alloy → A mixture of two or more elements,one of which is a metal - 1 miss
  6. ductile → , Capable of being drawn out, as into wire or a thread. - 1 miss
  7. atomic number → Basis for arranging elements in modern periodic table - 1 miss