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Chapter 5 Vocabulary Alkali metal: element in Group 1A of the… - Grand `vana [entries|archive|friends|userinfo]
Viva La Dilación

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[Oct. 12th, 2004|05:19 am]
Viva La Dilación

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Chapter 5 Vocabulary



  1. Alkali metal: element in Group 1A of the periodic table (lithium, sodium, potassium, rubidium, cesium, francium,)
  2. Alkali earth metal: element in Group 2A of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium)
  3. Abbreviated electron configuration: Shorthand notation describing the distribution of electron among the energy levels of an atom
  4. Atomic radius: distance between the center of the nucleus of an atom and the outermost
  5. Electron affinity: energy change that occurs when an atom gains an electron
  6. Electronegativity: property of an element that indicates how strongly an atom of that attracts electrons in a chemical bond
  7. Family: vertical column of the periodic table that contains elements with similar electron configurations; also known as a group
  8. Group: vertical column of the periodic table that contains elements with similar electron configurations; also known as a family
  9. Halogen: reactive, nonmetallic element in Group 7A of the periodic table (fluorine, chorine, bromine, iodine, and astatine)
  10. Ionization energy: energy required to remove the most loosely held electron from an atom.
  11. Metal: element that typically has a high melting point, is ductile, malleable, shiny, and a good conductor of heat and electricity; found on the left side of the periodic table
  12. Noble gas: inactive element in Group 8A of the periodic table ( helium, neon, argon, krypton, xenon, and radon)
  13. Nonmetal:  element that has a low melting point and a dull surface, breaks easily, is a poor conductor of heat and electricity, and tends to gain electrons in a chemical reaction
  14. Noble gas inner core: group of electrons in an atom’s inner, filled energy levels; configured much like electrons in a noble gas
  15. Period: horizontal row of elements in the periodic table
  16. Periodic law: natural law that states that the physical and chemical properties of the elements are periodic functions of their atomic numbers
  17. Periodic table: arrangement of the elements in order of their atomic numbers so that elements with similar electron configurations are located in the same column
  18. Periodic trend: property of the elements that can be predicted from the arrangement of the periodic table
  19. Semimetal: element that does not have metallic properties; found on the right side of the periodic table
  20. Valence electron:  electron in the outermost energy level of an atom; for most atoms. Its available to be gained, lost, or shared in the formation of chemical bonds.

 

I know, old news. I'll have chap. 5 notes up later. Peace

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