2022 science paper 2 internals for ecz past papers exams for grade 12 for Zambia

This video is a complete revision for 2022 science paper 2 for internals in the ecz past exam papers for grade 12 with answers series for the examination council of Zambia. Enjoy the video.

*IMPORTANT NOTE*:
Section B 5 (c), 524.8/328 = 1.6g and not 3.2g

[THEDMSONLINESCHOOL]

*Important notice: Section 5 (c), 524.8/328 = 1.6g and not 3.2g.*

[CosmasMayoba-tmqi]

Thank you Sir for your videos, even though I started late to go through them I have obtained a credit in Science, it has really helped me a lot. May the Almighty continue giving you more knowledge to helping us...Thank you once more

[bendzohog]

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[JanetMwiya]

May God continue blessing the soul that helps others

[oscarzimba]

You are therapist of Science sir thank you

[JenniferPalata]

Thank you sir for your lessons May you live long

[blacksonmutambo]

C3
part (d)
(ii) Aluminum will not react with ethanoic acid so No observation or effervescence will be observed sir .
Reason: Because Aluminum has a thin oxide layer of aluminum oxide which prevents further reaction
(iii) Aluminum is used to make cooking utensils, aluminum foil because it has unreactive.

[PatrickMulenga-pm]

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[JoshuaBanda-gu]

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[WesleyChikonde]

Thank you very much sir for your help may our good God continue blessing you and more years for you

[moizymungalu]

I've enjoyed the lesson but on question 5b why did you use 1.6 instead of 3.2 as mass of O2 when finding the number of moles..???

[RobinViruz]

Sir q9 why did we not convert the volume to dm³ before calculating

[GabrielleNaluyele]

You are really helping us thank you sir

[blacksonmutambo]

on number 5 multiple choice the best answer is D lodine has the greatest intermolecular forces
The atoms increase in size, as they gain extra electron shells, and the intermolecular forces become stronger. More energy is required to break these forces, thus there are higher melting and boiling points as you go down the group.

[SaviourChisanga-kq]

Thank you for your expertise sir . But you have used 1.6 g instead of the physical mass 3.2g that you found already.

[BernardChilala]

The all alrmight God bless you in all what you do.

[PhernyHinji]

Am a bit confused, on finding the number of mols, why are dividing 32 into 1.6 where is the 1.6 coming from?

[AbrahamMakumba]

Am joining chemestry thank u continue with this good explanation

[tinamusumali]

Please also teach on chemical reactions

[jeffmunkondya]

Sir on question A19, when an alcohol reacts with oxygen we call that process to be combustion.