Periodicity Vocab Quiz Honors Chem 2023

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Across
  1. 3. one-half the distance between the nuclei of identical atoms that are bonded together; aka: size of an atom
  2. 6. First man to attempt to organize elements; created the "Law of Octaves"
  3. 7. An atom or group of atoms that has a positive or negative charge due to losing or gaining electrons
  4. 9. Group 1, 1 valence electron, very reactive, soft, silver, shiny, low density metals and are also less reactive
  5. 11. an ion with a negative charge due to gaining electrons
  6. 12. States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons
  7. 16. Group 2, 2 valence electrons, harder than the alkali metals
  8. 19. Elements that have properties of both metals and non-metals, the stair-step on the periodic table.
  9. 21. Groups 1,2,13-18
  10. 22. Vertical column in the periodic table
  11. 23. Groups 3-12, 1-2 valence electrons, less reactive than alkaline-earth metals, shiny, good conductor of thermal energy and electrical current, high density metals
  12. 24. A horizontal row of elements in the periodic table
  13. 25. when the elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties chemical properties
  14. 26. Part of the inner transition metals following lanthanum in the periodic table, in which the 4f orbitals are being filled
Down
  1. 1. group 18 gases, have 8 valence electrons and are stable and non-reactive
  2. 2. Arranged the periodic table by atomic number instead of mass number
  3. 4. The amount of energy required to remove an electron from an atom
  4. 5. "Father of the modern periodic table"; predicted properties of undiscovered elements and organized
  5. 8. transition metals; groups 3-12 including f-block
  6. 10. Elements that are good conductors of electric current and heat, are malleable and ductile. On left side of periodic table
  7. 13. an ion with a positive charge due to losing electrons
  8. 14. A measure of the ability of an atom in a chemical compound to attract electrons
  9. 15. Part of the inner transition metals following actinium in the periodic table, in which the 5f orbitals are being filled
  10. 17. Group 17, 7 valence electrons, most reactive non-metals;also known as "halides"
  11. 18. Elements that are poor conductors of heat and electric current, on right side of the periodic table.
  12. 20. Table by increasing atomic mass
  13. 27. The ease and speed with which an element combines, or reacts, with other elements and compounds.