Set: Science Chapter 6

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All 28 Terms

Term Definition
Dmitri Mendeleev Russian chemist who found a pattern between all the elements, he arranged them by increasing atomic mass and created the first periodic table
Modern Periodic Table elements are order in increasing atomic number
Henry Mosely chemist who was the first person to determine the atomic numbers and re-arranged the periodic table
periodic law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers
groups columns of elements on the periodic table
families another word for groups, columns of elements on the periodic table
period a horizontal row of elements on the periodic table
metals silver, gold, sodium, potassium, located to the left of the dark zigzag line
physical properties of metals used to identify metals
luster shininess of a metal
ductile ability to be made into wires
malleable ability to be hammered into thin sheets
corrosion gradual wearing away of a metal due to chemical reaction in which the metal element is changed into a metallic compound
rust corrosion of iron
tarnish corrosion of silver
non-metals located to the right of the zigzag, fewer elements are classified as non-metals than metals
metalliods share properties of both metals and non-metals
alkali metals have one valence electrons, are soft, silvery white, and shiny, good conductors of heat and electricity, readily bond with other elements, not found alone in nature
Alkaline earth metals there are six known,not found alone in nature
transistion metals copper, tin, gold, silver, have 1 or 2 valence electrons, form compound with other metals
boron family 3 valence electrons, hard and brittle, never found free in nature
carbon family have 4 valence electrons, carbon makes up many different compounds
nitrogen family make up 78% of the air, have five valence electrons
oxygen family have 6 valence electrons, most abundant in the Earth's crust
halogen family have 7 valence electrons, most active non-metals, share or gain valence electrons
Noble gases most unreactive elements, have 8 valence electrons, also known as inert gases, found in small amounts in the Earth's atmoshpere
lanthanoid series made up of soft, malleable metals that have high luster and conductivity
actinoid series radioactive, most are made in labs

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Terms 28
Creator silverwizard
Created June 18, 2007
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Most Missed Words

  1. Henry Mosely → chemist who was the first person to determine the atomic numbers and re-arranged the periodic table - 1 miss
  2. transistion metals → copper, tin, gold, silver, have 1 or 2 valence electrons, form compound with other metals - 1 miss
  3. oxygen family → have 6 valence electrons, most abundant in the Earth's crust - 1 miss
  4. lanthanoid series → made up of soft, malleable metals that have high luster and conductivity - 1 miss
  5. actinoid series → radioactive, most are made in labs - 1 miss