Introduction to Atoms Crossword

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Across
  1. 6. Horizontal row of the periodic table; elements with the same highest unexcited electron energy level.
  2. 7. Substance that has high conductivity and other metallic properties, including tendency to form cations, often identified by group on the periodic table.
  3. 8. An element in Group VIIA of the periodic table (e.g., Br, Cl).
  4. 10. The defining unit of an element, which cannot be subdivided using chemical means
  5. 11. Component of the atomic nucleus with a defined mass of 1 and charge of +1.
  6. 14. Average mass of atoms of an element.
  7. 15. Stable negatively charged subatomic particle.
  8. 16. The number of protons in the nucleus of an atom of an element.
Down
  1. 1. Element from the B group of the periodic table characterized by having partially filled d electron orbital sublevels.
  2. 2. Element from Group 8 of the periodic table (e.g., xenon, argon).
  3. 3. Any element found in group IA (first column) of the periodic table.
  4. 4. Positively charged center of an atom, made from protons and neutrons.
  5. 5. Element with properties intermediate between those of metals and nonmetals (e.g., silicon).
  6. 9. A vertical column on the periodic table consisting of elements that share periodic properties.
  7. 12. Element that does not display metallic properties, typically referring to elements located in the upper right corner of the periodic table.
  8. 13. Particle in the atomic nucleus that has a mass of 1 and charge of 0.