Ujian Amali Sains 2023/24 - Chemistry Paper 3 . Sample Topic: Rate of Reactio

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8 ай бұрын

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Versi BM: • Ujian Amali Sains 2023...
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Пікірлер: 100

@shinesstories5210 8 ай бұрын

U were spot on with the physics exam just finished it jn

@MrRuelTuition 8 ай бұрын

I'm very happy to know that! I hope it was doable.

@dankson8034 8 ай бұрын

ABSOLUTE LEGEND, sir I don't know you personally but I just saw the physics video you made yesterday and it was the exact same thing I did today for the amali sains. Tomorrow is chemistry and I am here watching this video. Please if possible do one for Biology, people are saying it's going to be F4 chapter 9.6 experiment: "Studying the energy value of food samples." Thank you for the amazing work you have done for us students. Hope you have a wonderful day!

@MrRuelTuition 8 ай бұрын

Hi, it is my pleasure as a teacher to help all of you do well in exams! I really hope this comes out for Chemistry too, but make sure you're prepared for anything. I will definitely doing a Bio video tomorrow.

@Brah-bb8of 8 ай бұрын

@@MrRuelTuitionSir i got the same exact tips , for physics as from your video, this chemistry video and food test for biology...im really glad i found your channel

@rxvx-28 8 ай бұрын

the exact thing came out for physic - happy that you explained and stated the points clearly ! thank you sir!

@MrRuelTuition 8 ай бұрын

I'm really glad the same thing came out, but don't expect the same to come out for Chem and Bio yea. Be prepared for anything. Stay come it If doesn't come out. If the same thing comes out, hurrah!

@ohummyeahhello 8 ай бұрын

Hello sir, thank you for provide us with this quick revision, the previous UAS physics video really helps me a lot. Looking forward for biology tomorrow. :D

@MrRuelTuition 8 ай бұрын

You're most welcome. I will definitely be doing Bio tomorrow. All the best!

@nishanesa5818 8 ай бұрын

thank you for your video sir.. very useful and hope can do well tomorrow

@MrRuelTuition 8 ай бұрын

You're most welcome. I hope so too! All the best 🔥

@user-hy9jb6ei1y 8 ай бұрын

Teacher for 1/time is it ok if I only give 2 decimal places ?

@ganymede1682 8 ай бұрын

In what situation would the graph in question be straight or curved? Im assuming it will be curved for 1/time on the x-axis but my teacher says otherwise for some reason

@MrRuelTuition 8 ай бұрын

It depends on what factor is chosen. If it is 1/time, yes it should be a curve. If it is rate of reaction against time and the factor is conc., then it will be directly proportional.

@vlhc379 8 ай бұрын

Thanks for the gentle reminders in the video. Will you be doing another video for biology?

@MrRuelTuition 8 ай бұрын

Yes definitely. It will be up around the same time tomorrow.

@praveenraj9524 8 ай бұрын

thanks a lot sir

@MrRuelTuition 8 ай бұрын

You're welcome. All the best! 🔥🔥

@shadowstal 8 ай бұрын

Thank you so much sir for Chemistry, your physics ramalan was spot on and I hope you have a great day sir

@MrRuelTuition 8 ай бұрын

You're most welcome. I'm glad it came out. I hope this one does too. All the best! 💪💪

@hanson2649 8 ай бұрын

Sir, for the fixed variable I can write either "length of magnesium ribbon" or "volume and concentration of hydrochloric acid" right?

@MrRuelTuition 8 ай бұрын

If you can remember, and it is the exact same experiment, then write both.

@kylx05 8 ай бұрын

Thanks la cher!

@MrRuelTuition 8 ай бұрын

All the best for tmr! 🔥🔥

@culturedguy1142 8 ай бұрын

sir,don't need to write clean the magnesium ribbon with sand paper in the procedure?

@MrRuelTuition 8 ай бұрын

It depends whether they give you a sandpaper in the list of materials. If they do, you can include it in the steps. If they don't, they would have already cleaned it for you.

@nomueater2420 8 ай бұрын

sir, thank you so much for the video… in the procedure, do we have to state that we have to clean the magnesium ribbon with sandpaper as one of the steps?

@MrRuelTuition 8 ай бұрын

If sandpaper is provided as material, then yes. But if not no need. You can use for precautionary steps if asked.

@rxvx-28 8 ай бұрын

i think it's this one - my teachers and tuitions also confirm this ! also, i hope you would focus on Food Technology and Calorie counting using peanuts and bread (for bio)

@MrRuelTuition 8 ай бұрын

I will definitely be doing Bio vid tmr. All the best!

@lomlust 8 ай бұрын

thank you sir ❤

@MrRuelTuition 8 ай бұрын

You're most welcome. All the best!

@friutvegetables3780 8 ай бұрын

Such a livesafer!!!

@MrRuelTuition 8 ай бұрын

2 more to go! 🔥🔥🔥

@somethingcrazy2784 8 ай бұрын

Hello sir, the responsing variable could be rate of reaction also right?

@MrRuelTuition 8 ай бұрын

It shouldn't be a problem, but I will personally make this my second choice.

@jameszhousbae4583 8 ай бұрын

Sir how to plot the graph

@MrRuelTuition 8 ай бұрын

It should be a smooth curve. It should not pass through the origin because rate of reaction will not be zero at 0 degree celcius.

@amiruldanish3714 8 ай бұрын

What to answer if it ask to predict the rate of reaction when magnesium strip is replaced with zinc

@MrRuelTuition 8 ай бұрын

The rate of reaction will decrease. Zinc is less reactive than magnesium.

@iddinzafri6946 8 ай бұрын

sir, what would be the rate of reaction if the hcl is sub with H2so4 and the inferens sir. and do make reviews for state trial papers . thanks a lot for physics

@MrRuelTuition 8 ай бұрын

You're most welcome. The rate of reaction will be doubled. Sulphuric acid is a diprotic acid while hydrochloric acid is a monoprotic acid. The concentration of hydrogen ions will be doubled.

@iddinzafri6946 8 ай бұрын

@@MrRuelTuitionwould the volume of H2 be doubled as well

@MrRuelTuition 8 ай бұрын

Assuming that the acid is in excess and the same length of magnesium ribbon is used, the answer is no. Because the limiting factor is the moles of magnesium reacted. The moles of magnesium reacted would be the same in both situations. Only the rate of reaction will be doubled.

@mrphantom0018 8 ай бұрын

Sir, i have a question. Do i have to write all 3 answers for the constant variable? and thank you for the physics ystd. was very helpful

@MrRuelTuition 8 ай бұрын

I'm really glad it was helpful. If this exact question comes out, then yes, you should give all of them.

@mrphantom0018 8 ай бұрын

@@MrRuelTuition Alright, understood teacher. thank you very much

@ethereal4696 8 ай бұрын

Hi sir, do we need to take 5 different temperatures or is 3 enough?

@MrRuelTuition 8 ай бұрын

Unfortunately, I don't have enough data to give you a proper answer. I'm not sure anyone does - if anyone does, please share with the rest of us. I would hope that there is some kind of clue on how many readings are required in the question itself.

@tanweifeng7755 8 ай бұрын

@@MrRuelTuition if only 3 beakers given, still 5 different temperature?

@ragunathanperiasamy3270 8 ай бұрын

Hi sir, for the hypothesis can we write Higher the temperatue of hydrochloric acid, the higher the rate of reaction. Can we put rate of reaction for RV as well sir? Thanks for your physics and chem video sir. Really helpful for me. Waiting for your bio video as well😅

@MrRuelTuition 8 ай бұрын

Yes can. Shouldn't be a problem. You're most welcome. All the best! I'll definitely be putting up the Bio video tmrw. I hope Chemistry goes well too.

@joelbachmann10 8 ай бұрын

@@MrRuelTuitionsir what if for physics I wrote "the greater the electric current, the greater the potential difference" as a hypothesis? Will that be accepted 😅

@sundarverasalam7748 8 ай бұрын

Sir, we shouldnt heat up the acid directly right?..

@MrRuelTuition 8 ай бұрын

You can heat up the acid directly no problem. You cannot heat up flammable substances directly, such as alcohol and hydrocarbons.

@sundarverasalam7748 8 ай бұрын

@@MrRuelTuition ok,thank you so much sir 😄👍

@majunahbee4466 8 ай бұрын

Sir operational defination if i put The time taken for the magnesium ribbon to dissolve completely in X mol dm3 of hydrochloric acid in different temperature . Can ?

@MrRuelTuition 8 ай бұрын

You should add "when magnesium ribbon is added to X mol dm3 of....". The "what is done" part is missing.

@majunahbee4466 8 ай бұрын

@@MrRuelTuitionthank you sir

@darrentan129 8 ай бұрын

sir lets say i want to test out rate of reaction with 40 celcius of HCl acid , and i accidentally overheat the acid and got 44 celcius , is it fine if i use 44 celcius to test ? or do i wait for it to cool down until it goes to 40C

@suriasharimi6959 8 ай бұрын

If you are required to heat for 50 degree too, just proceed to that temperature first, after that you can do back again for 40 degree

@MrRuelTuition 8 ай бұрын

Technically you wouldn't be wrong, but I'm not confident that they would definitely mark you right in SPM. So, to be safe, cool down to 40 first

@darrentan129 8 ай бұрын

okay thanks sir , i guess if it exceeds a bit i think we should just lie about it @@MrRuelTuition

@keerthikavijayen 8 ай бұрын

Hi sir, Is it a must to include all the apparatus in the procedure? Tq

@MrRuelTuition 8 ай бұрын

It is better to include it, if you are sure, to be safe.

@keerthikavijayen 8 ай бұрын

Okay sir thank you @@MrRuelTuition

@ligma5336 8 ай бұрын

Hi sir can i write "Rate Of Reaction" as my RV?

@MrRuelTuition 8 ай бұрын

It should not be a problem, but I would personally stick with the experimental outcome as the RV.

@hwc102 8 ай бұрын

Is there any percautions that should be taken in this experiment?

@MrRuelTuition 8 ай бұрын

Not anything in particular. But since you're using acid, you can say "use gloves to prevent acid splash on skin". Also depends on whether you're waiting for the magnesium ribbon to be completely dissolved. If you are, you can say "ensure magnesium ribbon is completely dissolved before stopping stopwatch."

@hwc102 8 ай бұрын

@@MrRuelTuition Understood. Thank you sir!

@MrRuelTuition 8 ай бұрын

Oh one of the comments reminded me, you can also say "Clean the surface of the magnesium with a sandpaper before using it."

@hwc102 8 ай бұрын

@@MrRuelTuition Thank you so much! It really helps me a lot! I would like to ask the graph for temperature vs 1/time and 1/time vs temperature, both situations will give us a curve graph? And is it possible to plot the graph for temperature vs time? How will the graph looks like?

@thivyadevichandran8684 8 ай бұрын

Sir is the procedure should be in past tense or present tense

@MrRuelTuition 8 ай бұрын

Follow the tense I have used in the example. That's usually how it is.

@thivyadevichandran8684 8 ай бұрын

Okay tq sir

@amirthaajeyaraman7954 8 ай бұрын

Sir do we need to draw graph?

@MrRuelTuition 8 ай бұрын

For this topic it's definitely possible. Please be prepared to draw graph.

@amirthaajeyaraman7954 8 ай бұрын

Thank you sir

@y_huiqiii3060 8 ай бұрын

Hi sir, may I ask on how to tabulate the data for this experiment?

@khooray7486 8 ай бұрын

Temperature of Hydrochloric acid(。c) || Time take for magnesium ribbon to completely dissolve in hydrochloric acid (s) || 1/time(s-1) normally tubulation of data for this experiment have three rows,but depends on the question whether you are asked to do additional calculation for any other things.Hope this helps

@khooray7486 8 ай бұрын

woww very smart shinoku

@y_huiqiii3060 8 ай бұрын

@@khooray7486Thank you so much!

@MrRuelTuition 8 ай бұрын

Yes, this is exactly right!

@KrishKumar-kc5ee 8 ай бұрын

Is it unguided experiment

@sheepy1283 8 ай бұрын

hi is jump scale allowed in chemistry?

@wanderertxt 8 ай бұрын

Yes i think so, just asked my teacher.

@sheepy1283 8 ай бұрын

@@wanderertxt thanks

@my_l1p_rouge593 8 ай бұрын

thank you for this sir , its really helpful and relaxed , easy to understand too !

@MrRuelTuition 8 ай бұрын

You're most welcome. All the best to you!

@my_l1p_rouge593 8 ай бұрын

thank you sir !@@MrRuelTuition

@thurgensarajanan8685 8 ай бұрын

sir what to answer if the question asked like this...Predict the rate of reaction if hydrochloric acid is replaced by ethanoic acid in this experiment.

@MrRuelTuition 8 ай бұрын

The rate of reaction will decrease. Ethanoic acid is a weak acid. It dissociates partially in water to produce a low concentration of hydrogen ions. Hydrochloric acid is a strong acid that dissociates in water to form a high concentration of hydrogen ions.

@thurgensarajanan8685 8 ай бұрын

thank u sir @@MrRuelTuition