Science

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Across
  1. 3. Made up of two or more separate elements
  2. 5. Combination of two substances that are not chemically bonded together
  3. 8. Has mass and takes up space
  4. 9. A negative charged particle
  5. 11. C
  6. 12. AU
Down
  1. 1. TI
  2. 2. A group of atoms bonded together
  3. 4. S
  4. 6. The building block of matter
  5. 7. H2O
  6. 10. O