Unit 5 Periodic Table Crossword

1234567891011121314151617
Across
  1. 2. Group 2 elements; reactive metals but less so than Group 1.
  2. 4. Elements that are typically shiny, conductive, and malleable.
  3. 6. A charged atom or group of atoms.
  4. 11. Group 1 elements known for their high reactivity with water.
  5. 13. The lanthanides and actinides, often placed below the main periodic table
  6. 15. Elements that are often dull, brittle, and poor conductors.
  7. 17. Stable Group 18 elements that do not react much.
Down
  1. 1. Middle-section elements known for forming colorful compounds.
  2. 3. Group 17 nonmetal elements.
  3. 5. An atom’s ability to attract electrons in a chemical bond.
  4. 7. Rule stating atoms tend to seek eight electrons in their highest energy level; matching a noble gas.
  5. 8. Electrons found in the outermost energy level of an atom.
  6. 9. The energy needed to remove an electron from an atom
  7. 10. A measure of the size of an atom from nucleus to outer electron cloud.
  8. 12. Elements with properties between metals and nonmetals.
  9. 14. A negatively charged ion that forms by gaining electrons
  10. 16. A positively charged ion that forms by losing electrons