Across
- 2. Atomic mass of 10.811 and is used to conduct electricity.
- 4. It is the 14th element and is used to manufacture steel, solar cells and microchips.
- 7. Its symbol is K and it is found in many foods for example bananas.
- 8. It has an atomic mass of 35.45 and it is used in the water at pools.
- 9. Its symbol is Na and it is sued to control blood pressure and volume.
- 11. It's the fourth element and is used to make springs, electrical contacts, and spot welding.
- 12. There are 8 electrons in it outer shell (3rd shell) and it is used in welding.
- 13. Symbol is HE and used to make balloons float.
- 14. The first element and used to fill blimps.
- 15. There are 2 electrons in its 3rd shell and it is important for body systems especially muscles and nerves.
- 18. Symbol is F and it is sued in toothpaste to prevent dental cavities.
Down
- 1. It is after Boron on the table and is used in tennis rackets, skis, fishing rods, rockets and aeroplanes.
- 3. Its electrons are set out as 2,8,8,2 and it is found in dairy items especially milk.
- 5. Atomic mass of 6.941 and used to treat Bipolar Disorder.
- 6. The symbol is N and it is used in commercial production to preserve food.
- 7. Its electrons are positioned as 2,8,5 and it is used in the red tips of kitchen matches.
- 10. It has an atomic mass of 26.98 and it is used in motors and appliances.
- 16. Its symbol is S and it is used to refine oil and in processing ores.
- 17. Its electrons are positioned as 2,7 and it is used for glow lamps and signs
- 19. Has an atomic mass of 15.999 and you need it to survive.