chemistry kb

123456789101112131415
Across
  1. 3. used in fireworks
  2. 5. in banana
  3. 6. backbone of everything
  4. 8. lightest element
  5. 10. 5th most abundant e material
  6. 14. highly radioactive
  7. 15. second lightest element
Down
  1. 1. aerospace metal
  2. 2. 29th element cu
  3. 4. 24th most abundant material
  4. 7. used in telecommunications
  5. 9. lightest material can float on water
  6. 11. 8th most abundant material
  7. 12. heavy dense material
  8. 13. brittle number 30 in the table