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Similaire à The Periodic Table
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The Periodic Table
- 6. One Electron in the outer shell Lithium 2,1 Sodium 2,8,1 Potassium 2,8,8,1
- 7. Form ions with +1 charge
- 8. Compounds of Group 1 Elements LiCl NaCl KCl Li 2 O Na 2 O K 2 O Li 2 SO 4 Na 2 SO 4 K 2 SO 4 Li 2 CO 3 Na 2 CO 3 K 2 CO 3 Potassium Sodium Lithium Carbonate Sulphate Oxide Chloride Element
- 10. Low densities & Low melting points 29 1.9 Cs Caesium 39 1.5 Rb Rubidium 64 0.86 K Potassium 98 0.97 Na Sodium 180 0.53 Li Lithium Melting Point(°C) Density (g/cm³) Symbol Name
- 11. Video Time!
- 13. Li
- 14. Li
- 15. Na
- 16. Na
- 17. K
- 18. K
- 19. Cs
- 20. Which metal was most reactive? And which metal was least reactive?
- 21. Write out the chemical equations for reactions of Group Ι metals with water.
- 22. Reactions of Group Ι Metals 2K (s) + 2H 2 O (l) 2KOH (aq) + H 2 (g) Immediate explosion Potassium 2Na (s) + 2H 2 O (l) 2NaOH (aq) + H 2 (g) Reacts very quickly; sometimes an explosion Sodium 2Li (s) + 2H 2 O (l) 2LiOH (aq) + H 2 (g) Reacts quickly Lithium Equation for reaction Observations Metal
- 23. --- Unknown Francium 2Cs (s) + 2H 2 O (l) 2CsOH (aq) + H 2 (g) Immediate Explosion Caesium 2Rb (s) + 2H 2 O (l) 2RbOH (aq) + H 2 (g) Explosion Rubidium Equation for reaction Observations Metal
- 24. What colour did the universal indicator changed to? Was the solution acidic, neutral or alkaline?
- 26. Next Lesson Group V ΙΙ Elements (Halogens)