you are my savior!! My chem slides didnt even mention this part and im paying nearly 1k for this class. Thank you for helping other students especially during this pandemic where having a one on one with a professor is difficult nowadays.

@kri_zleybear

2 жыл бұрын

Jesus Christ is our Saviour

@kittyspam2146

2 жыл бұрын

Need to find a better class I am sorry yours is bad.

@astikadeo3996

2 жыл бұрын

Ikr!!!!! I have a short test on these tomoro

This was SUCH a big help!! Thank you so much!! I'm sad that you don't have more views on this! Everyone needs to watch this video! You're an amazing teacher, thank you very much for helping us all! :)

I commend you Melissa. I've never seen a youtube tutor take the time out to work with other people. You've definitely taken it one step further. And, in the process it helped so many more.

Thank goodness for you! Helped me SO SO much! You are definitely one of the best tutors on KZread!!

you've made this more clear. Thank you Melissa

Thank you so much for doing these! It is like getting one-on-one tutoring, and your student asking questions and you including your answers helps so much more than just someone talking at me the whole time. It is so nice. This is a lifesaver find on the internet for me!! xD thank you!

A very perfect way of showing the student solving the problem and as the student moves on, giving instructions. My students learned a lot from that. Not many have a youtube whereby the student is active solving a formula. Very very very good. compliment.

This kind of video set-up is super helpful! Thank you Melissa

I can't believe this is free to watch, thank you so much!!!

Omg I can understand this more easily than my teacher's explanation. Youre a life saver! Haha

@lucyedubio2826

3 жыл бұрын

Yea Me too✨✨

I literally have an exam today and this just saved me. Thank you!!

Some great stuff! very easy to follow along, thank you very much!

Hello Melissa, this video really helped out. Thank you!

This was a HUGE help for my incoming exam! Thank you so much! Love from Italy

A great tutorial....students usually have problems with octet and expanded octet and fc....but the explanation was great...well done and thank you

Thank u very much, that helps me alot, this is the first time i understand why there are more than one Lewis structure for polyatomic ions.

thank you so much I went back to the uni after 3 years dropping off and was forgetting all the chemistry I learned back in high school, this helped me a lot. : )

THIS MAKES SO MUCH SENSE NOW THANK YOU

Melissa, you put in a lot of sincere efforts in preparation and lucid teaching.. Kudos..

These are brilliant thank you so much, you have no idea how much youve helped. and you explain everything so well

You saved my life!!! Thank you!

It always takes me so much time to get myself to sit down and actually study for chemistry and you always help me in completing my studies. Thank you so much!!

Video was so helpful! Thank you!!!!!!

GOD BLESS YOU OMG I'm taking summer gen chem at my community college rn and its been so stressful the professor barely has time to cover everything so she had to rush through this unit and I was honestly trying not to cry on the way home 😭 watching this video definitely cleared up a few things for me and I'm feeling a lot more confident, my exam on this is in 2 days i think i need a little more practice and ill be where I need to be to get that A !!!

I'm sure with this, I'm not failing my tests. Thank you so much... I can't believe I fully understand what has been giving me headache, I'm so teary right now

I got all of it just right. Thanks!

Melissa, I grew up in a cult where we weren't allowed to learn Science at all. I recently started college and was terrified of how I'd do. Over the summer I watched all of your videos to prepare and I just took my first Chemistry test ever and got a 95%. Thank you!!!!

@PrxneAOT

Жыл бұрын

wow

This video helped me SO much!!! Thank you, thank you, thank you!

Thank you so much. I just found this one when I am very stuck with Lewis structure

I just found this video, THANKS! I wish i had a teacher like you, you are awesome!

I'm so greatful, you helped me with my chemistry exam next week...

This is so helpful, TQSM!

It's very helpful 😍 it would be great if you could give more practice problems, thank you so much!!

THIS VIDEO WAS A LIFE SAVER OH MY GOSH TY

This helped me so much!

The notes are so pretty I can’t stop looking and by extent I’m actually learning!

You're the best!!! You literally NEVER fail me :)!

so freaking helpful, thank you!!!💛

You are AWESOME! Having a student sitting in was super helpful, too! College life saver

Thanks a lot for the video .This was a great help for my studies.

Thank you for your content! It has been very helpful! I actually am confused about the very last problem. Why wouldn't nitrogen and oxygen have a double bond and then fill in the lone pair for oxygen? When do you use double bonds versus lone pairs?

Thank you... I have just finished my quiz successfully. Since now, I am your new subscriber.

You are THE BEST! Thank you!

Everything made sense ma'am you are amazing ❤️❤️❤️❤️

This shit is the best, rarely you see vids that tutor, keep going you goats, also nice editing, love how much work you put in!

this helped a lot...thank you

You are really amazing 🎈 my way to chemistry has been made easy by you....God bless you ❤️❤️❤️I love you

Thank u sooo much , it helped me a lot !

Have really understood wooow so happy thanks mrs

i do not know how you don’t have more views, you are fantastic!

Thank you soooooooo much!!!!!

Never would've thought watching this kind of tutoring videos would help me understand something better!! that's it, gonna go for "with us" rather than "with me" from now on

Using this adding formula instead of the fraction formula is so much easier. Thank you.

I am from phillipines and an I.E student from pup, thank you for having a detailed discussion about this topic especially now a days, we're just finding our own way to learn by ourselves and tbh, it is really hard.

Extremely useful video for my students. Make more on other topics also !

HIIII Melissa, I just wanted to ask if it matters where we put the hydrogen for the oxygen in the last problem?

Thanks, I have better understanding for formal charges after watching your video.

Thank you so much✨✨ I understand much more💕💕

SO HELPFUL.

SUCH a GREAT help Thanks

You are a great teacher 🤗

you are amazing thank you for saving me from my college complicated assignments.

YOU ARE A STAR !

You always help me

Thank you! have my finals tomorrow.

U are truly a savior 💯💯 I love u❤️🥰

That's amazing thank you so much

so helpful!

Thank you so much

any have an idea why the last question at 27:50 can't have a double bond between the Nitrogen and the Oxygen with the Oxygen having 4 electrons on it still

Thank you melissa it was really helpful!!❤ i could nt understand one part at 24:48 why one of the Fluorine atoms have only two lone pairs i understand why the other Fs have 3 lone pairs but i don t get why this F has 2 lone pairs

Really you are so good your explanation is very very good and when you was teach I just kept looking at you honestly you are so good teacher and my guide

Hi, thank you so much I get it more! But one question, I thought that the formal charge formula looks like: FC= #valance electrons -(#non-bonding + 1/2 bonding electrons) because that’s what I’ve been learning. So is the 1/2 not necessary? Thank you so much though !!!

@danielhonour-god4916

4 ай бұрын

1/2×5 is the same this as 1/2×5/1 So the 1 times the bonding electrons

Hi melissa! This video was very helpful! But may I know in the 5th item in this practice problems? How will I know if I don't need to do a double bond? So it's okay to just add a lone pair in iodine?

@tashxrappos

3 жыл бұрын

Two/three reasons janna, 1. If you add a double bond instead of the lone pair you won't have the 42 electrons that are needed for the compound, you will only have 40 - adding the lone pair will give you the extra two. 2. If a Fluorine atom were to have a double bond and 2 lone pairs (4 'single' electrons), it would have a total of 6 electrons, which would be 1 less than what it needs to be neutral, therefore it would have a formal charge of +1, which again is incorrect. 3. Much like with fluorine, if you add the double bond onto Iodine, that would only give 6 electrons, when Iodine needs 7 to be neutral, so it would have a formal charge of +1.

It would nice to have an OCHEM basis video.

Thank you so much mam

Really helpful 🙏🏼♥️ I really like these kind of problem solving videos

why is it more favourable to have a neutral formal charge on the central atom? do you have a video about this?

Their is a trick I got from this whole lesson That is ,that when their is just a single minus sign that means I will have just one single bond in the structure and that also implies to the sign of minus 2 Thanks for this great video

On the NH2OH problem, could we have triple bonded oxygen and nitrogen with oxygen having one lone pair?

@tuonghoang7251

3 жыл бұрын

no, because in this Nitrogen will have 10 electrons around it and it cannot expand the octet.

thank you!

I really get to understand chemistry watching your videos You like 💯 Amazing

Love u Melissa ❤️

Thank you for this video. However, I just had a quick question I thought that the central atom always has to have a charge of zero. Because for No3- the charge on the nitrogen is 1 and thats the right structure. So how would you know if the central atom is supposed to be zero or have a charge on it? Thank you in advance

thanku mam it helps a lot

احسن من شرح دكتورنا

Can anyone explain when she does [SO4]-2, why sulfer does not form only 2 bonds? i thought since it was in group 16, it would only want to form 2 bonds, not 4. Thank you!

I have a chem quiz tomorrow on Lewis Dot Structure and I was super worried about it, but now I'm not worried at all. Also, I never comment on youtube videos but you are such a great teacher that I had to say thank you!

Ma'am how can we draw lewis dot structure for Br3O8 ma'am? can u pls explain it?

What is the device you use to show this awesome exercise online?

For the last one, does OH need to be done the way she did it in lewis structure or are their other possibilities? Like having 3 H around N and an O on the right. The way it was written out kind of explains the way she did the lewis structure but I was just wondering if it's allowed to do it other ways or not.

@30kUzi

2 жыл бұрын

maybe a bit late but you have to bond them the way they're written, so like the 2 Hs would be around 1 N and the last H on the O

gracias!!

What do we do if the formula has an element like Ti in it? Like TiCl4

You are the best ❤❤❤❤❤❤

Melissa the wise giver❣️❣️🕊️🕊️📝

Your formal charge equation I prefer over the book! Thank you so much I understood it better practicing with you.

At 7.01, how come the oxygen atoms have 6 lone pairs of electrons attached, as well as the one bonding with Sulphur, which adds up to 7, if it only has 6 valence electrons?

@hassinagayapershad7402

2 жыл бұрын

I have the same question

you're awesome!!!!!!!

it was good..

Can you make a video about functional groups? PLEASE AND THANK YOU!!!