Chem cross word puzzle Elise Rothke

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Across
  1. 2. chemical unit, be it atoms, molecules, ions.
  2. 3. a pure single form of matter
  3. 6. small portion of matter.
  4. 8. Mass of one mole of a substance.
  5. 9. any substance that can not be decomposed into a simpler substance.
  6. 10. that results from the sharing of an electron pair between two atoms.
Down
  1. 1. the reactant in a chemical reaction with a greater amount
  2. 4. chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product.
  3. 5. proportions and of the conservation of mass and energy to chemical activity
  4. 7. a substance that is present at the start of a chemical reaction