Physical Science Unit 2A

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Across
  1. 1. this bond occurs between a metal and a nonmetal
  2. 6. the force that holds atoms together
  3. 7. a positively-charged ion is called a(n) _____
  4. 8. covalent compounds have ____ melting points
  5. 10. covalent compounds are ______ when in their solid form
  6. 11. this group of elements tend to lose valence electrons and become positively-charged
  7. 13. covalent compounds are ____ or gases at room temperature
  8. 15. ionic compounds are ______, or hard
  9. 16. ionic compounds have _____ melting points
Down
  1. 2. the ___ tells what elements a compounds contains and the exact number of atoms of each element
  2. 3. a negatively-charged ion is called a(n) _____
  3. 4. in an ionic bond electrons are ______
  4. 5. this group of elements tend to gain valence electrons and become negatively-charged
  5. 9. this bond forms between two nonmetals
  6. 12. ionic compounds are ___ at room temperature
  7. 14. in a covalent bond electrons are ______