Rhema vibes is live

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[00:00:00]active indicates that you are active.

[00:00:02]Good evening everyone.

[00:00:13]Good evening everyone.

[00:00:15]Indicate that you're active if you're active before we commence the class because I have a lot a lot to cover today. a lot a lot to cover because I actually I actually saw a lot of questions today that the purpose of this class is not telling you that you are going to see exactly the same question but I'll be touching areas on the question.

[00:00:52]I've noticed something about jam. It was today I got to know so many things about Jam. I'm speaking from firsthand experience. So I don't need to say much before you understand what I'm trying to say. For those that have me on WhatsApp, you are supposed to know what I'm trying to say. All right. So I have I have observed something about J. Those I'll be writing theirs tomorrow. Those I'll be writing on Monday. Please you guys need to be very attentive and you guys need to follow this live stream. is very very important. Very very important. All right. For those writing uh physics, chemistry, biology, physics, chemistry, biology, English, you guys need to be active now. Are you guys active? So that I will commence the I will commence the class.

[00:01:45]Are you guys active? For those that have written, they can attest to the fact that some of the things that we treated came out. I'm not just saying, you can confirm. People that wrote can attest to the fact that some of the questions that came out either came out directly from the things I posted or indirectly so long I touched the area. That's the reason why I'm making emphasis on this.

[00:02:12]You understand?

[00:02:15]So, are you guys active?

[00:02:21]Are you guys active?

[00:02:26]Please, if you are active, indicate so that we commence.

[00:02:35]Indicate. Indicate.

[00:02:52]Okay. So now I I will start with some of the questions that came out today.

[00:03:02]Some questions that came out today.

[00:03:07]Now they can ask you questions on electronic configuration. Like this one was asked, it came out today. The element with the electronic configuration of 1 S2, 2 S2, 2 P6, 3 S2, 3 P6 and 4 S2. This one came out today.

[00:03:27]The element with the electronic configuration of this, the element is very easy for you to get. How? All you simply do is just to sum up the powers and then you get the atomic number of the elements. Meaning that 2 + 2 + 6 + 2 + 6 + 2. When you sum up everything here, you have to obtain what? You have to obtain 20. All right? So, and then 20. What element has the atomic number of 20? The element with the atomic number of 20 is calcium.

[00:04:02]When you are reciting of S20 element, the element with the atomic number of 20 is calcium. So the correct answer becomes calcium. Hope that is clear.

[00:04:16]Hope it is clear.

[00:04:18]It's very easy for you to get the atomic number. All you just simply do is you sum up. You sum up the powers. All right? Just sum up these numbers here.

[00:04:30]when you add up everything you get 20.

[00:04:32]So it means calcium is with the atomic number 20. Hence the answer is calcium because there was calcium in the option.

[00:04:39]Then they can still bring something else like the one that they brought today again in another set. They brought this particular question 1 S2 then 2 S2 then 2 P6 3 S2 and 3 P5.

[00:04:56]Now this time around they were not asking what element has the electronic configuration of this but rather they were not asking what group can you find the element with the electronic configuration of this. So they were asking for the group the group of the elements. Now it's very easy for you to get the group of this element. All you simply do don't even stress yourself reciting your first 20 element because you just add up all this and then you get the atomic number. No, when you are asked for the group, just focus on the last orbital representation. The last orital representation. The last orital representation here is 3 P5. 3 P5.

[00:05:38]All right. Focus on that last one. Then the next thing you have to do. You now check what ended it. What orital ended it. Was it S orital, P orital, D orital or F? You know we have S, we have P, we have D and we have F. So in this case it is what P since it is P that ended this orital representation anything you have as the power you simply add two to it you get the group I don't know that you guys are getting it now if you are given any electronic configuration take note for you to obtain the group what would the last orital meaning this one in this case so we are left with 3 P5 right so the next thing you have to do you consider what orbit what orital ends the orital representation there it happens to be P. So since it ended in P and you are asked for the group anything as the power of P or attached to P as the power all you simply do is just to add two to it when you add two you get the group that's just a shortcut. So it becomes 5 + 2 here becomes what? Seven. So hence this element is found in group seven.

[00:06:49]Group seven that's the answer. Or another way that you can get it if you are confused about what I said is just to sum up everything. Now 2 + 2 is what is 4 + 6 10 + 2 12 then + 5 17.

[00:07:06]Now if you are going by share configuration of 17 it should be what? 2 8 and what? Seven. Yes. Two in the K share then eight in the L share then seven in the M share. Isn't it? So the outermost share here is seven. So hence this becomes the group of the elements.

[00:07:22]I hope that is clear. Is it clear?

[00:07:27]Is it clear?

[00:07:30]So that's how you get a group.

[00:07:34]If it is clear indicates that it is clear. So in case you see a question on that just know what to do. Then there is another thing I can still drag out from here that I know that jam can still possibly bring out. Imagine imagine you are given you are given this okay let me let me bring it out again let's say we are given 1 s2 2 s2 and 2 p 6 then 3 s2 now you know I said if you are told to get the group what do you do you work with the last orital right so in this case if you ask for the group of this element bring out the 3 s5 m um I mean 3 s2 in this case. Now when you bring it out the next thing you have to do check the orital in this case is s right. So since it ended in s please don't add anything like two it's only when it ends in p that you have to add two to get the group but when it ends in s you are not to add any number. You understand? So in this case you just simply go with this two to be what the group. So it means that this element is in what? In group two. So anything as the power of S becomes the group automatically. That's only when it ends in S. That's like the shortcut. When it ends in S, automatically anything attached as it power is its group. You understand? So if it ends in P, that's when you need to add two to get the group. For example, if I write 1 s2 2 s2 2 p2 and then I am asked to determine the group of this element.

[00:09:17]Firstly I have to bring out the last orital 2 p2. Then since it ended in p what should I do? I will now bring this power out and then add two to it to get the group. So it becomes 2 + 2 which is what four. So this element is present in group four. You understand? That's only when it ends in P that you are to add two to the power. But if it ends in S, you just simply go with it as group. Is that clear?

[00:09:43]Is that clear?

[00:09:48]Hope you guys got that.

[00:09:57]So when they just bring question like that, know what to do.

[00:10:02]So that's that about that. Then let's fudge ahead to looking at other questions.

[00:10:09]Other questions that came out. Okay. As in the case of they asked for the elements that make up clay. Yes. If you see a question on that, what are the elements that make up clay? We have aluminum, we have silicon, we have oxygen, and we have hydrogen. Take note.

[00:10:27]These are the elements that make up clay. All right? Take note of that. The elements that make up clay.

[00:10:35]This question came out today.

[00:10:38]The elements that make up clay.

[00:10:43]All right.

[00:10:46]Aluminium, silicon, oxygen, hydrogen. So take note of that. Then they also brought questions from organic chemistry.

[00:10:58]They brought questions from organic chemistry and this was a structure that they brought out. They brought out this structure and then the structure is CH3 then CH3 then O then CH3.

[00:11:17]Now this structure was was asked the name of this structure is very very easy. Now you get the longest carbon chain. Now in this case I can decide to move from here to here. If I move from here to here it should be one two three.

[00:11:32]If I move from here to here it's still one two three. If I move from here to here is still 1 2 3. So I can decide to go with any direction because my possibility of having the longest chain happens to be three. So I can decide to just go like this to be my longest chain. All right. I can go in any direction cuz all of them they are three. So in this case I choose to go with this direction. We have O. You know that O is a functional group and we have M which is CH3. This guy is M. You are aware of that. Why? O is a functional group of what? Of the aranos.

[00:12:09]So it therefore implies that the parent will go with what the A cano the name all must end the parent chain. You understand? Because of the parents of O.

[00:12:19]So what are you supposed to do? You number forward and backward. So let's go 1 2 3 1 2 3 you see it now. So forward this is this is one 2 3 forward then backward is 1 2 3. So if you go with any direction it's still the same number.

[00:12:37]Now this is the carbon that is carrying both the O as well as what the meter. So going by forward or backward is the same number. So I can decide to go with any.

[00:12:45]So if I go forward the two is to this guy. So how many carbons are there in the parent chain? There are three carbons. one, two, and three. That should be what? Propan propan. Then since you have O seated on carbon 2, you call it two all. That's our parent chain. Then where do we have our methile group, which is a substance still in carbon 2? So you now call it 2 mi 2 propan 2. That's the name of this compound. That question came out. The name of that compound is 2 mi propan 2.

[00:13:19]2 mi propan 2. Hope you guys are getting it. 2 mi propan 2. All right. So that's one question that came out.

[00:13:32]Then this was another one that still came out and then they asked they brought this and they brought this and then they now wrote n they said this is a monomer a monomer. Then they not asked he said the IPAC name the IPAC name the IPAC name of the monomer the IPAC name of the monomer which is this one now is what they interested in getting so what should be the IPAC name of this compound now let's dissect it the iPad name of that compound now bringing it out it should be what C and H right this is CH2 two so I am expanding then doubly bonded which is this double bond then C then we now have chlorine twice CL and what CL so they are asking for the name of this first thing first we have double bonds there so it means you should be taking your minds to the alkenes meaning it should end in in why because alkenes are doubly bonded in terms of carbon to carbon then alanes alanes are singly bonded don't forget This then alkyes they are triply bonded. So in this case since you have double bonds there means that this is coming from the alkenes.

[00:14:54]How many carbons are here? Two two carbons. So two carbons which is considered to be the longest chain must be what? 18 right? 18 because we have two carbons doubly bonded. So it's 18 means two carbons. So the double bonds is the in. Then we have substitute which is these two guys. If you number forward this is one two you number backward one two you know that going by forward or backward considering the two carbons linked by the double bonds is the same thing forward is one and two backward is one and two so it will not be preferable to going with the backward because we want to still give these guys small numbers already if we are going backward it doesn't affect the double bonds you understand so it's better to go with the backward of these two guys here so that you give one you duplicate the one to these two you get the point now so if you are going by backward This one should be duplicated to both this and to this. You understand? So it's now called what? One one they will share the one because you have one carbon carrying two substituents. So it must be shared. So one one then what? D why am I using D?

[00:16:02]Because I have two of chlorine. So dchloro 18. So that's the name one one dchloroine.

[00:16:10]Hope you guys know that. Another name for it. Another name for it is Italy.

[00:16:16]Hope you guys are aware of that. So please take note of that. Another name for it is Italy.

[00:16:23]Another name for it is it.

[00:16:29]Are you guys following? Another name for it is italene.

[00:16:37]All right. It is not acetylene. It is italene. Italene Italian hope you guys are getting it.

[00:16:50]All right. So, let's let's move on.

[00:16:55]Let's move on.

[00:16:59]A quick one. You know, in the course of this lesson, I want to be doing something. I don't know whether you guys would love it. I want to be touching biology alongside chemistry. I don't want to just focus on really one then go to the I just want to be touching the two at the same time. How do you guys see it? You want me to be touching the two at the same time?

[00:17:19]How do you guys see it?

[00:17:23]Should I be touching the two at the same time so that we'll be fast?

[00:17:30]What's your What's your suggestion?

[00:17:33]Should I touch the two at the same time?

[00:17:41]Okay, I think I think that will be better. I should be touching the two.

[00:17:44]You see, I made mention of Italy just now. H a question came out in biology today and then the question was they said which of the following hormones is responsible for leaf absision? Leaf absision.

[00:18:01]Which of the following hormones is responsible for leaf abs? When we say leaf absition, we are saying leaf for falling of leaves. Leaf fall. That's leaf absision. I know what's going through your mind now is that you should be looking out for ABA. That's absic acid. Absyic acid.

[00:18:22]ABA. Absyic acid. But you know what?

[00:18:27]Absyic acid was not in the option. That was the surprising thing. It wasn't there. But then again there is another hormone that primarily is involved in leaf absition and that hormone is that italene. Normally most students they only know it to be the induces or hastens the quick ripening of fruits.

[00:18:49]That one is it function too. But then the primary role of italene basically is to what is to induce leaf absition.

[00:18:58]You understand that's not even the primary role of this aba. Even if the name is absic acid though it induces leaf absition but then it is not its primary role. As a matter of fact the primary role of ABA is to control the opening and the closing of the stomata.

[00:19:15]So if you are asked what hormone is responsible for for controlling the opening and the closing of the stomata.

[00:19:21]It happens to be absicical acid. Don't mistake it for gut cells. Gut cells are involved in regulation of opening and closing of the stomata. We are aware of that. But the hormone that induces that hormone gut cells are not hormone. So the hormones that induces that is actually what? Absic acid. Hope you guys are getting it. So primarily italene induces what? Lift leaf absition.

[00:19:46]Hope you guys got that.

[00:19:50]Hope you guys are understanding it.

[00:19:54]So that question came out. It came out.

[00:19:56]So, so just just make sure you take note.

[00:20:01]For those saying physics, don't worry.

[00:20:03]I'm going to give you guys areas that you need to that you need to cover in your physics. Physics the only thing that happened in physics is that you know so many students they lack the proper foundation. They don't have good foundation in physics. That's the reason why they are still struggling. They don't have good foundation. The thing is physics is all about formula. If you know if you can relate with the question and know the right formula you have to use you will not be having issues. They brought questions on things like um current electricity you must know that one very well. Uh electrical energy in terms of calculations they brought that too. You must just know formula.