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.
revision on chapter periodic table, chemical bonding and electrolysis with answers
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
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7. Sodium undergoes the following reactions. Write chemical equation: i) With oxygen: ii) With water: iii) With chlorine: 4Na + O 2 ï 2Na 2 O 2Na + 2H 2 O ï 2NaOH + H 2 2Na + Cl 2 ï 2NaCl
30. 2. HYDROCHLORIC ACID 0.0001 moldm -3 WITH CARBON ELECTRODE ALL IONS PRESENT H + , Cl - & OH -
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33. ANODE CATHODE OBS COLOURLESS GAS THAT REKINDLES GLOWING WOODEN SPLINTER COLOURLESS GAS THAT GIVES âPOPâ SOUND -TESTED USING BURNING WOODEN SPLINTER