Ujian Amali Sains 2024/25 - Chemistry Paper 3 . Sample Topic: Ionic Compound and Covalent Compound

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[@DESMONDLINGSINGFOOMoe]

Thanks sir.
My amali science is starting tomorrow goodluck to all of you :)

[@MrRuelTuition]

All the best to you 🔥🔥🔥

[@AnonymousUser-v9l]

Thanks sir.
All the best batch 07

[@MrRuelTuition]

You're most welcome. All the best 🔥

[@sheeshshoosh7879]

Thank you so much , sir. This actually came out today and I was so happy about it, confirm will get high marks🎉

[@MrRuelTuition]

Fantastic! I'm really glad this came out too.

[@tszyshhs]

thanks sir, im nervous for my chemistry because during trials i got pretty low marks, i hope to get flying colours.

[@MrRuelTuition]

Don't worry, just focus on doing your best. All the best! 🔥

[@leamaz9622]

thank you so much sir!

[@MrRuelTuition]

All the best to you! 💪🏽

[@Rushan29-ug9uh]

Thanks sir😀

[@MrRuelTuition]

All the best. You can do it! 💪🏽💪🏽💪🏽

[@ammarirfan3343]

Thank you sir i hope this actually comes out 🙏💪🏻

[@MrRuelTuition]

Me too. All the best! 💪🏽💪🏽💪🏽

[@rissiekhavijiyakumar]

Thank you so much sir!!! You're the best. Best explanation ever 🥺I hope this actually comes out in the exam

[@MrRuelTuition]

I hope so too. All the best to you! 🔥💪🏽

[@Jasper-cp2lm]

How about hypothesis?

[@21stcenturygamer1]

Hypothesis: Ionic compound soluble in water but not in organic solvents; covalent compound insoluble in water but soluble in organic solvent.

[@chiko4164]

sir if the question use distilled water, should i write water or distilled water

[@MrRuelTuition]

For hypothesis, it should be water. If you have to use it in procedure, it should be distilled water.

[@nurmaryamhibatullah667]

Hi sir. If the inference is answered like this: "Magnesium chloride is soluble in water because it dissociates in distilled water to form free moving ions. Naphthalene is insoluble in water because it contains only neutral molecules which cannot
dissociate in distilled water". Is this acceptable? I mean without the points of overcoming the the electrostatic forces.

[@MrRuelTuition]

I don't see anything wrong with the answer, except that you must use the terms "ionic compound" and "covalent compound". However, while technically correct, I wouldn't use "dissociate" under solubility explanations for SPM.

[@nurmaryamhibatullah667]

@@MrRuelTuition ok, sir

[@timon1267]

Sir, I heard some people say that observation cannot write soluble. Must write dissolve. So which one is better?

[@MrRuelTuition]

We will never really know until someday the actual SPM answer to the question is released. The reason I chose "soluble" is because the header in the textbook is "solubility...". But they could require you to say that it dissolves instead. I don't see why they should mark you wrong if you say it dissolves. Unfortunately, I'm not sure what the mark scheme holds. There are no strong and reliable sources available yet for this.

[@zhiqi7510]

Thanks sir so good explanation 😭

[@MrRuelTuition]

You're most welcome. All the best!

[@narcoleptic1887]

Sirr is inference in chemistry means = a small conclusion?

[@MrRuelTuition]

"Inference to the observation" means "why is the observation like that" or "what is causing the observation?".

[@kurosakyi6563]

Teacher, my amali already ended. I just want to ask cuz for my paper, they asked you to make a table to say like which substance is soluble and insoluble. I made a table like what you did in the video but I had 3 substances, should have been fine. But some people say that saying insoluble and soluble is not acceptable and only does not dissolve or dissolves is acceptable. I’m not sure what do you think?

[@MrRuelTuition]

I understand why they say that. Obervation must be something that can be seen or measured directly. "Soluble" can be seen. But in the end, right or wrong doesn't matter - only what they decide is accepted in the mark scheme. So we will never really know until someone repeats the question in some trial paper and follows the MS of the actual SPM question.

[@kurosakyi6563]

@ I see. Thanks for the reply teacher

[@nurwafanajwa3180]

Sir dlm Malay xde ke..saya xfaham english 😭😭

[@MrRuelTuition]

Adaaaa. th-cam.com/video/__MAnwJgFqA/w-d-xo.html