CHAPTER 5 VOCABULARY

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Across
  1. 5. the process of adding or removing electrons from an atom or molecule, which gives the atom or molecule a net charge
  2. 7. an element in the s-block or p-block of the periodic table
  3. 10. one of the elements of group 17 (Fluorine, Chlorine, Bromine, Iodine, and Astatine); combines with most metals to form salts
  4. 13. an arrangement of the elements in order of their atomic numbers such that elements with similar properties are in the same column, or group
  5. 14. a measure of the ability of an atom in a chemical compound to attract electrons
  6. 15. any of the series of heavy radioactive elements that extends from Thorium (atomic number 90) through Lawrencium (atomic number 103) on the periodic table
  7. 16. an atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge
  8. 17. the energy needed to remove an electron from a negative ion to form a neutral atom or molecule
  9. 18. an ion that has a negative charge
Down
  1. 1. one of the elements of group one on the periodic table (Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium)
  2. 2. an ion that has a positive charge
  3. 3. the energy required to remove and electron from an atom or ion
  4. 4. a member of the rare earth series of elements, whose atomic numbers range from 58 (Cerium) to 71 (Luteium)
  5. 6. an electron that is found in the outermost shell of an atom and that determines the atoms chemical properties
  6. 8. one-half of the distance between the center of identical atoms that are not bonded together
  7. 9. one of the metals that can use the inner shell before using the outer shell to bond
  8. 11. one of the elements of group two on the periodic table (Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium)
  9. 12. the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements