Chemical terms

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Across
  1. 3. The building blocks for everything
  2. 4. when two or more compounds are chemically bonded together
  3. 5. electrically neutral group of two or more compounds chemically bound
  4. 6. has a negative electrical charge
  5. 7. is neutral
Down
  1. 1. an equation that shows what a compound is made of
  2. 2. has a positive electrical charge