Science

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Across
  1. 3. a visual description of a concept or process
  2. 4. the form of something
  3. 5. a substance with even particles
  4. 6. in an atom, has a negative charge
  5. 9. substance that can have its elements separated
  6. 10. in an atom, has a positive charge
  7. 11. a substance with 2 or more chemically bonded elements
  8. 12. _____s of the periodic table
Down
  1. 1. what makes up everything
  2. 2. a substance with uneven particles
  3. 7. can be a compound, mixture or element
  4. 8. in an atom, has a neutral charge
  5. 10. opposite of impure