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How was Chemistry P1/2

Messages
209
Reaction score
40
Points
38
First question was about cation, anions and elements.
The carbon option was used twice. Above that we could write Aluminium or Manganese ion that goes to Cathode. Oxygen had 8 protons. Neon was octet.
Mg had 4 outer shells.

Q2) Zinc hydroxide
Zinc
Zinc nitrate
46
NO2

Q3 ) advantages of recycling reduces energy and cost etc.
Addition polymer with two repeat unites had to be drawn without double bonds
Reducing lands fills and pollution
Condensation polymer was given
We had to add N-H linkage
Fats

4) SiO2
Strong forces of attraction b/w molecules and van der waal forces
No delocalised electrons

5)
1.2 pH
30 cm3
0.083

That was section A.

Give me a break and I'll get back to section B. :)
 
Messages
209
Reaction score
40
Points
38
Oh and ps, in q5, the acid would start from a higher ph when ethanoic acid would be used and less conc. required to neutralise.
 
Messages
663
Reaction score
282
Points
73
First question was about cation, anions and elements.
The carbon option was used twice. Above that we could write Aluminium or Manganese ion that goes to Cathode. Oxygen had 8 protons. Neon was octet.
Mg had 4 outer shells.

Q2) Zinc hydroxide
Zinc
Zinc nitrate
46
NO2

Q3 ) advantages of recycling reduces energy and cost etc.
Addition polymer with two repeat unites had to be drawn without double bonds
Reducing lands fills and pollution
Condensation polymer was given
We had to add N-H linkage
Fats

4) SiO2
Strong forces of attraction b/w molecules and van der waal forces
No delocalised electrons

5)
1.2 pH
30 cm3
0.083

That was section A.

Give me a break and I'll get back to section B. :)



there was no option of manganese or aluminium in q.1 ....plus it was either magnesium ion or potassium ion that went to the cathode !! and for the 4 shells how can magnesium occupy four shells ?? :eek: ur drivin me crazy !! it was a calcium atom that occupied 4 shells !! with 20 protons !! its the no.of protons that count for the shells !! not the nucleon number >>>
 
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