Across
- 3. The horizontal rows of the periodic table are called
- 5. the name of group 7A in periodic table
- 7. This compound have 38 atomic number and part of alkali earth metals
- 8. it is used for make bicycle frames
- 11. the name of group 6A in periodic table
- 12. amount of compound in noble gases
- 15. This compound used to kill bacteria
- 16. it is one kind of group 4a and sometimes used in beauty field
- 17. it is on kind of alkali metals and it is used in bateries and medicine to treat mental disorders
- 19. amount of group 3a in perodic table
Down
- 1. it is one of the element in choloroflourocarbons or CFCs
- 2. in the body, this compound used for control of the water content of the blood
- 4. it is used of street lamp that give an orange glow
- 6. It is one kind of nobel gases. it have 36 atomic number
- 9. The number of proton in an atom
- 10. it is one kind of group 3A and the position under alumunium
- 13. it is can you see in periodic table is placed alone
- 14. it is used make the bright light in photographer's flash gun
- 15. it is used for the formation of healty teeth and bones
- 18. it is used for lift meteorological ballons into atmosphere