chemistry

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Across
  1. 2. one half the distance between the nuclei of two atoms of the same element when the atoms are joined
  2. 5. a bond in which two atoms share two pairs of electrons
  3. 7. a bond format by the sharing of electrons between atoms
  4. 8. the ability of a substance to undergo a specific chemical change
  5. 11. the percent by mass of each element in a compound
  6. 12. a term used to refer to the mass of a mole of any substance
  7. 14. an electron in the highest occupied energy level of an atom
  8. 16. a compound composed of two elements; NaCl
Down
  1. 1. a high- energy proton emitted by a radio isotope
  2. 3. a bond formed when two atoms share a pair electrons
  3. 4. the percent that a measured value differs from the accepted value
  4. 6. a negatively charged subatomic particle
  5. 9. A Property that depends on the amount of matter in a sample
  6. 10. an electron resulting from the breaking apart of neutrons in an atom
  7. 13. a compound composed of positive and negative ions
  8. 15. a compound that produces hydrogen ions in solution;