The document contains information about the periodic table including: 1) It lists the elements hydrogen through argon and their symbols in the periodic table. 2) It explains that noble gases are chemically non-reactive because they have a stable electron configuration with a full outer shell. 3) Sodium undergoes reactions with oxygen, water, and chlorine that produce sodium oxide, sodium hydroxide, and sodium chloride, respectively.

1. PERIODIC TABLE a. i.Label group 1 17 Transition metal 13 14 15 16 18 2

2. ii.Label period 1 to 5 Period 1 Period 2 Period 3 Period 4 Period 5 1 2 Transition metal 13 14 15 16 17 18

3. iii.Place proton number of elements 1 to 20 in the periodic table above 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

4. iv.Place all the elements given in the periodic table above with their symbols Transition metal H He F Ne Na Cu Cl Br Ar K Mn Li

7. Sodium undergoes the following reactions. Write chemical equation: i) With oxygen: ii) With water: iii) With chlorine: 4Na + O 2  2Na 2 O 2Na + 2H 2 O  2NaOH + H 2 2Na + Cl 2  2NaCl

16. CHEMICAL BONDS REVISION

18. Draw electron arrangement for compounds formed between a) Sodium and oxygen ( given proton no. Na, 11: O, 8)

20. b) For water molecule

22. c) Carbon and chlorine

26. 1. MOLTEN LEAD(II)IODIDE WITH CARBON ELECTRODE

29. ANODE CATHODE OBSER A PURPLE GAS EVOLVED GREY AND SHINY SOLID DEPOSITED

30. 2. HYDROCHLORIC ACID 0.0001 moldm -3 WITH CARBON ELECTRODE ALL IONS PRESENT H + , Cl - & OH -

33. ANODE CATHODE OBS COLOURLESS GAS THAT REKINDLES GLOWING WOODEN SPLINTER COLOURLESS GAS THAT GIVES ‘POP’ SOUND -TESTED USING BURNING WOODEN SPLINTER