Thank you for not being like other Chem professors who pretend these particular reactions are so simple. The language itself is confusing and the Chem Department doesn't try to simplify despite the the thousands we pay them to TEACH US! THANK YOU!

@shannonriley8299

2 жыл бұрын

yes i have noticed that too, when i went to embry riddle the teachers there helped us out. but now at an a&m univeristy, i feel most of the time i have to hunt and peck to find my answers.

I am 10 min away from a test and I just learned the last thing I needed to know 😭 thank you so much!!!

@dzbro1194

3 жыл бұрын

how much did u get

@phoebegotanco7904

3 жыл бұрын

yea i wanna know too

@yenifervanegas

3 жыл бұрын

If I remember correctly 80

@rambo6767

3 жыл бұрын

@@yenifervanegas nice

@shahzadahmed5012

3 жыл бұрын

@@yenifervanegas better late than never

Thank you, professor David. Your videos were absolutely useful in my first year teaching Chemistry in your country!

@ProfessorDaveExplains

7 жыл бұрын

so happy to help a teacher! please tell all your students to subscribe!

I still don’t understand

@Realramboff

8 ай бұрын

Go eat Morvite😂

@ysabellefranz9625

7 ай бұрын

you should look for the reactants, not in the products

@cutty3482

5 ай бұрын

@@ysabellefranz9625bless

@SarahKhan-sv4fc

4 ай бұрын

So me

@zahh5809

4 ай бұрын

Been 5 years,hope you understand it now 😭

i have no words to express sir other channels online put vids of 10 hours and show hundreds of reactions but dont even explain a single one properly i was frustrated with this thanx a lot for making it simpler

1 week of lecture taught in 4 minutes

Prof Dave rocks. Your explanations are very simple and direct. Thumbs up for making life easier for me

Thanks again Professor Dave. You explain chemistry well, and concisely too - two reasons why I subscribed! :D Keep it up.

I’ve been learning from your videos since quite a few months now, lets just say you’re a hero.

There is a mnemonic: OIL RIG. OIL- "Oxidation Is Loosing (electrons)" and RIG- "Reduction Is Gaining".

@thadszmaciasz8971

Ай бұрын

LEO and GER are also great (Lose Electrons Oxidation) (Gain Electrons Reduce)

BRILLIANTLY explained Professor David.. not easy for sure to be untrained mind, but with repeated viewing of this short 3 min 51 second clip.. YOU WILL UNDERSTAND & know how to recognize the Oxidation and Reduction in terms of change of charge + recognizing the Agents by seeing what happens to it originally 👏🏻👏🏻👏🏻

Hi Professor Dave! I love your checking comprehension section at the end!

Thanks 😆😆you really made me understand chemistry finally !! Since I was in high school I felt like I will never understand chemistry and thanks again I get good grades in my exam because of you 🌚✌🏼

Okay my man you are better than my teacher, this has summed everything I've done for months without understanding

I was really confused by watching other videos finally I came to watch ur video I'm really thankful sir🤩

There is one other time that oxygen has a oxidation state other than (-2) and that's in OF₂, where it has a (terrifying) charge of (+2). Your videos are awesome, btw. You teach a lot like I do, skipping a lot of the BS and half-assing that a lot of general chemistry courses use.

Thanks Professor Davis!!! Sending appreciation all the way from California!!!!

Thank you Dave for the GREAT free content!

I wish you had a video over every single topic out there. When I search something on youtube and finally your video comes up, ik my search is over

@p.vidhya6305

2 жыл бұрын

Yes

Awesome explanation professor.It cleared my confusion.Thanks.!

thanks for elevating me from feeling like a moron 😀

THIS MAKES SO MUCH SENSE NOW THANK YOU

This video was so resourceful .Thank you so much .Everything was explained so easily.

this guy has taught me oxidation and reduction reactions within 3 mins whilst my teachers couldn't do it with hours and days teaching me some boring ass textbook work that didn't help me one bit, it just goes to show that if you want to learn something you have to go out and learn it yourself

Thank you sooo much sir, u r helping a lot in my 2 years preparation

THANK U SO MUCH. U JUST SAVED MY LIFE FOR MY CHEM MIDTERM!!!!!

Thank You SOOO SOOO Much, you don't know how much of a LEGEND you are!!! I've been looking for a simple and straightforward explanation to recap what I had learnt and you finally helped me out. I don't know why I didn't watch your video earlier. But now I've subbed you so I will always remember to watch your videos for help :)

@p.vidhya6305

2 жыл бұрын

Mee too same thing 😭😭😭 I don't understand this topic but after seeing his lecture I could understand it easily I too subscribe him 😀😀😀

3:14 explain the last one

Thanks, I am in 4th year of industrial engineering and I have a subject called "Metal science: Corrosion and Surface Technology". I used to learn this multiple times but keep forgetting about this.

A BIG thanks from Texas. thanks you sooooo much.

thank you for explaining this, it has taken me so long to figure these problems out

thanks for the help!! did not understand this in the least until watching your video

i love u man ,thanks from Egypt

Thank you very much, this really helped me study for my unit test!

In the checking comprehension exercise, on the last exercise... Al2(SO4)3 You assigned +3 to Al2, +6 to S and -2 to O. Would it be possible to assign 8 to S and keep Al as 0? If not, why not?

@user-kb3qw4jf4d

Ай бұрын

While assigning oxidation states (OS) of +8 to sulfur (S) and 0 to aluminum (Al) in Al2(SO4)3 might seem mathematically possible, it deviates from established principles for two key reasons: Charge Neutrality: Al2(SO4)3 is a neutral molecule, meaning the sum of its oxidation states must equal zero. Since each sulfate ion (SO4) carries a -2 charge (-2 x 3 = -6 for three sulfate ions), aluminum collectively must have an oxidation state of +6 to balance this negative charge. Assigning +0 to Al would violate this principle. Typical Oxidation States: Sulfur's common oxidation states range from -2 to +6. In Al2(SO4)3, sulfur shares electrons with oxygen in the sulfate ion. Based on these electron sharing patterns, a +6 oxidation state for sulfur is more realistic. Aluminum, on the other hand, almost exclusively exhibits a +3 oxidation state in ionic compounds due to its tendency to lose its three valence electrons for stability. Therefore, assigning +3 to Al and +6 to S adheres to both the charge neutrality requirement and the established oxidation state behaviors of these elements within Al2(SO4)3. Sorry if my explanation was a bit long 😅😅

Thank you very much professor Dave you just break everything down for me to my understand❤❤ I'm so grateful

Thank you so much for this video it really helped on my homework!!!!

Thanks a million, Professor Dave, from Ireland!

You are a good teacher Dr. Dave. Thank you.

I didn't comprehend anything!

Short, sweet... Perfect!

Thank you for saving my soul from failing chem.

@vivekpathak6949

5 жыл бұрын

ideal11 app khailo

Dude you have no idea how much you helped me thx

Super helpful, thanks so much!

I feel like these videos are entertaining enough that I'd actually go out of my way to watch them, not just when I'm struggling to complete the chemistry project that's due tomorrow. It's like Game Theory, but without the games.

@ProfessorDaveExplains

6 жыл бұрын

That's exactly what I'm going for! My dream is that everyone will watch them just to learn a little science, not just because they have to for school. But take of your obligations first! Then you can bonus learn.

What a simple way of learning!!

great video! thank you

Dave* Sorry ._. but I really do love your videos. Thanks for extending my love of science! !😁

I wish you are my chemistry teacher. You would be the best. Like the videos.🙌💯

Thanks, great mnemonic

Thank you for this vid!

I have that same shirt and now I can wear it while knowing a little more about redox reactions.

sir please make video on grahams law of diffusion

amazing explanation

You deserve a million subscribers sir! I love you so much already!

@nyx246

3 жыл бұрын

your wish was our command

also if you have a glass batch containing antimony acting as the redux chem in glass it is a "sweeper" creating oxygen which rises to the top of the pot "grabbing" all other bubbles including any oxygen to be reabsorbed putting the glass into reduction......

Nice teaching

Wonderful Explanation . I love that . Thank you very much.

@brd8764

Жыл бұрын

when redox is really something.

(press pause for more time) makes me smile every time ^__^

Two things: 1) Is the idea of an element being reduced by gaining electrons essentially like adding a negative number in algebra? So, if the starting number is 10 and -2 is added, then 10 is reduced to 8 because it "gained" -2. Yes/No? 2) Are oxidation eductions typically covalent or ionic bonds? Or can it be either one depending on the circumstance? Thanks Prof. Dave & mates!

Very succinct and helpful

Your cartoon in start is very funny I enjoyed😂 well done . Good explanation . God bless u

Much clearer than the CrashCourse video, geess

nicely explained ! thank u so much! 🙌i thought as if my brain cells were leaving me (coz of my chem prof's "teaching skills")...but now am ok...

Great video. Thanks.

That beginning tho😂😂

Good luck on your tests guys!

Can you explain half reaction??? Btw this video is amazing I loved it and it is really helpful

@arwaandphysics477

3 жыл бұрын

kzread.info/dash/bejne/mXaYu6efc5PNkdY.html Please have a look May be you find this useful

Wow this literally did not help me at all but thank you for the effort. I might sound dumb but I legit need pictures not chemical formulas

Thank you so much dear

what are the oxidation charges of each element in CO

This was helpful. Thk u.

i got everything except the last comprehension question. How do you assign the numbers between the 2 non O elements?

Is splitting of water and combination reaction of hydrogen and oxygen a redox reaction?

Thank you Professor Dave for making science more easier. Could you please try to upload the method to balance an equation using oxidation number. Esp. the equation FeSO4 + KMnO4 + H2SO4 -> Fe2(SO4)3 + MnSO4 +K2SO4 +H2O

@ProfessorDaveExplains

3 жыл бұрын

check out my tutorial on balancing redox reactions

Thanks from India

great sirji, ur videos are very good to understand and remember concepts in chemistry.... from center of India, NAGPUR

شكرا على الترجمة

How fructose 1-5 biphosphate change to 2 glyceraldehyde 3phosphate molecules ?

Thank you so muchhhhh❤.

in the last compound in the assigning oxidation set, why does 'S' in (SO4)3 get an oxidation number of 6? Why wouldn't it be 2-?

Finally. I understand now 😂😂This is the ONE concept I absolutely could. not. grasp. in high school chemistry. 25 years ago. i just gave away my age but so what. Fortunately I passed and the Universe decided I should not despise chemistry after all =)

Thank you so much ❤😭

Best teacher on youtube by a mile

What is the spectator ion in the first equation? Please help

at 2:52 why are the reactants both zero and the products their respective charges even though all of those are just single elements?

In the final comprehension question, is there anyway to know that SO4 has a net charge of -2 without looking up Sulphur on the table? Or is that ultimately inferred from the fact that there are 2 Als and 3 SO4s? Question for Dave or anyone. Also, I LOVE THIS CHANNEL! Thanks for the vids.

@tantsuya3274

2 жыл бұрын

in my ap chem class we just had to memorize the polyatomic ions and their charges so that's what's in the bag for us sorry for being a year late

@samcoopermusic

2 жыл бұрын

@@tantsuya3274 Better late than never! Yes, memorization and/or cheat sheets are the way to go.

two hours before my test 💪🏻

Thank u professor

Thank you too much from today I am your client. Oredy I was subscribing to your channel

@goitomsereke1286

4 жыл бұрын

🖐️👍😅😋🙄🤩😢

can you please explain tricks to remember periodic table

Sana all professor dave

you are my hero

Thanks bro.

how to decide whether a compound is neutral ?

Is it possibly that reducing agent or oxidizing agent can be on the other side ( Product ) ?

he looks like someone who shreds guitar, but he shreds knowledge and sprinkles on our pizza

Thanks sir

At 3:08 - when we are testing checking comprehension, why do you use +4 for the charge of Pb with PbO2? Isn't 2 the more common one?

@ProfessorDaveExplains

6 жыл бұрын

but oxygen is 2-, and there are two of them, so lead must be +4! ions come together in ratios to give neutral compounds.

Why is it important to determine how many oxidation states an element has; what conclusions does it tell?