Unit 2 Vocabulary Crossword

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Across
  1. 2. the approximate size of an atom’s charged ion measured in a variety of different ways
  2. 6. these electrons are found in the highest unfilled energy level, responsible for making chemical bonds
  3. 7. a class of elements that have electrical properties between those of metals and non-metals. This group includes boron, silicon, germanium, arsenic, antimony, tellurium and polonium.
  4. 9. a value between 0 and 4 that describes the relative pull of an element for electrons from other atoms, with higher numbers meaning stronger attraction for electrons.
  5. 11. any of the gaseous elements helium, neon, argon, krypton, xenon and radon occupying group 18 of the periodic table; generally described as being non-reactive.
  6. 14. a negatively charged ion formed when an atom gains valence electrons
  7. 15. group 17 elements, including chlorine, fluorine and bromine
  8. 17. the area around an atom’s nucleus where the electrons are most likely to be found
  9. 18. radius – the distance from the center of an atom to its outer edge
  10. 19. shows how electrons are spread among the s, p, d and f orbitals.
Down
  1. 1. a group of six chemical elements located in the first group of the periodic table; these metals are known for their reactivity, soft texture and silvery color
  2. 2. the energy required to completely remove an electron from an atom
  3. 3. groups 3-12 of the periodic table which include elements with 1 to 10 electrons in d orbitals
  4. 4. a class of elements which typically are electrical insulators, including oxygen, carbon, nitrogen, neon, fluorine and elements to the right of the periodic table.
  5. 5. a graphical chart of information on the elements that groups the elements in rows and columns according to their chemical properties.
  6. 8. any of a class of elementary substances, as gold, silver, or copper, all of which are crystalline when solid and which are good conductors of electricity and heat.
  7. 10. a positively charged ion formed by losing valence electrons, including metals and the ammonium ion
  8. 12. the set of quantum states for an electron in an atom that have approximately the same energy
  9. 13. a groups of six elements in group 2 of the periodic table that are known for being shiny, silvery-white and somewhat reactive.
  10. 16. group of quantum states that have similar spatial shapes, labeled as s, p, d and f.