Puzzle

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Across
  1. 2. State with no change in motion
  2. 4. Concerned with beauty
  3. 7. A disease that spread worldwide
  4. 8. swing back and forth in a rhythm
  5. 10. An accent or dialect
  6. 12. having less solute.
  7. 13. Formal advice
  8. 14. Praise or admiration
  9. 15. non-invertible matrix
  10. 18. Change in momentum
  11. 19. Someone you know
  12. 20. Organ that regulates chemical levels in blood
Down
  1. 1. blending atomic orbitals
  2. 3. Body's main source of energy
  3. 5. Careful, precise
  4. 6. Passionate, driven
  5. 9. a solid substance with a plane surface, sharp edges and rectangular geometric shape
  6. 11. Shy, quiet
  7. 16. Separate, distinct
  8. 17. A rectangular array of numbers