Periodic table
Across
- 2. a red/brown metal used for pennies
- 4. 136+86= the atomic mass
- 6. a chemical element used as an anti-rust coat
- 10. 90
- 11. can be found in old glass
- 13. fourth in group one
- 16. the abbreviation is the opposite of yes
- 18. used to make ballons float
- 19. the symbol is the abbreviation for for real
- 20. 3rd in the second row
- 21. the abbreviation for agriculture
- 23. The celsius boiling temperature
Down
- 1. element starts with P, not K
- 3. 31-15=16
- 5. second element in group one
- 7. hard silvery-white metal
- 8. My atomic number is two 5's
- 9. hard silver transition metal
- 12. I have 13 x 2 electrons
- 14. four letter word and used for jewlery
- 15. 28.085-14 is the equation
- 17. used to clean cattle udders
- 18. My atomic number is the simplest
- 22. the NAMAN answer is 114