Crossword

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Across
  1. 2. the smallest part of an element that is representative of the element
  2. 6. change of state from solid to a gas
  3. 7. metal dull,brittle element that does not conduct electricity
  4. 8. change of state from a solid to a liquid
  5. 9. characteristics that can be used to describe a substance
  6. 12. formula combination of symbols that represent a compound
  7. 13. metals group 1 element in the periodic table, not including hydrogen; most reactive of the metals
Down
  1. 1. substance that helps a chemical reaction to proceed more quickly
  2. 3. is anything has mass and occupies space
  3. 4. reaction chemical reaction that absorbs energy
  4. 5. group 17 elements in the periodic table; the most reactive non-metals
  5. 10. table a table in which the elements are organized by their physical and chemical properties
  6. 11. fourth state of matter