Chemistry Crossword

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Across
  1. 4. Table of all of the elements
  2. 6. the vertical rows in the periodic table
  3. 9. the arrow between the reactants and the products in a chemical equation
  4. 10. Negatively charged ion
  5. 12. A catalyst is a substance that lowers the activation energy of a reaction
  6. 14. any atom or group of atoms that bears one or more positive or negative electrical charges
  7. 15. The amount of matter in a substance
Down
  1. 1. A compound yielding two elements
  2. 2. A family is a group of elements sharing similar properties
  3. 3. the horizontal rows in the periodic table
  4. 5. An energy level is a possible value of energy that an electron can have in an atom
  5. 7. elements on the left side of the arrow
  6. 8. elements on the right side of the arrow
  7. 11. positively charged ion
  8. 13. Two elements yielding one compound