Chemistry crossword

12345678910111213141516171819202122232425
Across
  1. 3. gases- group 18 elements in the periodic table;the most stable and unreactive elements
  2. 5. system- an experiment in which one or more products of a chemical reaction can escape
  3. 7. shiny, malleable, ductile element that conducts electricity
  4. 10. pure substance that cannot be broken down into other substances; substance made up of only one type of atom
  5. 11. a substance with a sour taste.
  6. 12. mass- mass of one atom of an element calculated from the total number of protons,neutrons, and electrons of that atom
  7. 13. change of state from a solid to a liquid
  8. 15. mass of a substance that can dissolve in a given amount of solvent to form a saturated solution at a given temperature
  9. 16. such a substance, as dissolved sugar or salt in solution.
  10. 18. to make or form by combining parts, elements.
  11. 20. element that has both metallic and nonmetallic properties
  12. 24. system- an experiment in which all reactants and all products of a chemical reaction are accounted for
  13. 25. number- number of protons in the nucleus of one atom of an element
Down
  1. 1. one of the electrically charged particles formed in a gas by electric discharge or the like.
  2. 2. elements in a family all have similar chemical properties
  3. 4. any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion.
  4. 6. anything extremely small; a minute quantity
  5. 8. metals- any of a group of soft, white, low-density, low-melting, highly reactive metallic elements
  6. 9. any substance that undergoes a chemical change in a given reaction.
  7. 14. the act or process of burning.
  8. 17. a substance that causes or accelerates a chemical reaction without itself being affected.
  9. 19. any of the electronegative elements, fluorine, chlorine, iodine, bromine, and astatine, that form binary salts by direct union with metals.
  10. 21. invisible negatively charged particle that orbits the nucleus of an atom
  11. 22. mass per unit volume.
  12. 23. compound pure substance formed when at least one metal and one non-metal combine