Chemical Reactions (4 of 11) Decomposition Reactions, An Explanation
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- Опубліковано 5 сер 2024
- Describes the basics of decomposition reactions, how to identify them, predict the products and balance the chemical equation. Two examples are also shown, decomposition of sugar and hydrogen peroxide.
A chemical reaction is a process that leads to the chemical change of one set of chemical substances to another. Chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms. In a chemical reaction there is no change to the nuclei of the atoms. They can often be described by a chemical equation. Chemical equations are used to graphically illustrate chemical reactions. They consist of the chemical formulas of the of the reactants on the left and those of the products on the right. They are separated by an arrow (→) which indicates the direction and type of the reaction. The most common types of chemical reactions are: double replacement, single replacement, combustion, decomposition and synthesis.
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it's seriously so nice that u take time out of your day to post videos to help us... thank i really appreciate it
lindsay taylor thank you for the nice comment, I am happy that you find the videos helpful. I make the videos because I always think that everyone can learn as long the concepts are simply explained.
I wish I had you as a teacher at school. These videos are some of the most informative, interesting, and helpful videos I have seen. Thank you!
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3:46 messed up at this part, i forgot to close the portal to hell and the black substance has been growing for the past 92 days. Aside from that, very informative lecture, your videos really help me out.
+Shep 919 That's funny, thanks for the positive comment. You can see a listing of all my videos at my website,www.stepbystepscience.com
But how do you know, in general, what the products will be?
Because when steam is given off that suggest the reaction decomposed into H2O. There are also things you could have gathered from that so for instance, when the sugar turned black that was Carbon at work as Carbon in its natural formation is of course dark.
@@nivaneh1010 Yeah, what if it's a test and you can't really do an experiment?
@@platonbabenko I have no idea what I typed two years ago lmao sorry boss
Exactly how
@@nivaneh1010 the tips my teacher gave me were that most decomps can be classified as simple, metal carbonate, hydrate, chlorate, and peroxides. Something with h2o breaking down will separate h2o from the substance. ClO will split to O2 + (metal)cl. A metal carbonate will contain co3 in the reactant and yield a co2 + (metal)o... a combo of H and O like H2H2 will yield an o2 + (metal)o
Thank you so much, I wasn’t at school the day we learned this and now I know
thank you so much for all of your help! you are helping so many students and doing a great job!! keep it up!
@James Choung, with this reaction, as you can see, the products are carbon and water. That is just the way it goes. With the combustion of a hydrocarbon like gasoline the products are CO2 and H2O.
Thank you for you're help I really appreciate it. Thanks for showing me as well, I'm a visual learner so that REALLY helps. God bless you and your family.
Thanks for the comment, glad that you find the videos helpful. You can a listing of all my videos from my website at www.stepbystepscience.com
best explanations out there, you are doing an amazing job. Keep it up, it sure is keeping everyone's grades up!
Thank you for the great comment. You can see a listing of all my videos at www.stepbystepscience.com
All the best teachers are on youtube, than the schools😜😅🤣🤣
Thanks for the comment.
This helped me so much, Thanks a lot!
thank you 7 years later this video uploaded
You're welcome!
Thankyou so much!!! I've had to miss school for quite some time now because of my ankle surgery but your videos have really helped me understand!
Great that you have found the videos helpful and thanks for commenting. You can see listing of all my videos at www.stepbystepscience.com
That reaction was epic and somewhar satisfying
thanks bro u the real mvp
Thanks for commenting.
You can see a listing of all my videos at my website, www.stepbystepscience.com
2
Great lecture. and the experiments were super cool
College test tomorrow and I'm getting it more and more thanks to you I really appreciate the videos. I really get a lot from them
Great, I am glad that the videos are helping….and thanks for the positive comment it means a lot to me.
i wouldnt have answered my homework if it wasnt for this. thanks a lot!
+Grimy Reaper Glad that I could help and thanks for commenting.
You can see a listing of all my videos form my website at www.stepbystepscience.com
Thank you so much this helped a lot!!!!!!!!!!
thanks ur videos are really helpful. Loved the fact u showed two experiments
Thanks for the comment, yes the experiments are interesting.
Thank you! this video really helped me out! I wish i had you as a teacher in my school !!
You are so welcome! Thanks for the comment.
Can you tell me a combination reaction in which more than two reactants are there.
great! THANK YOU so much
-inorganic chemistry lab
Was never taught these special case reactions.
For instance H2CO3 decomposes to H2O and CO2.
How do we determine the prediction, is there a special case chart to memorize did I miss something???
+Alejandro Gomez Yes you do have to just memorize/learn them, for cases like the decomposition of cabonates and chlorates.
Sir I am from india,it's hard to study during this pandemic but I salute and appreciate you for helping us in this situation and such a nice and best explanation
It's my pleasure, wishing you all the best.
Thanks a lot this video helped me a lot my all confusion got cleared
Glad to hear that!
Hello and thanks for your explanation!
Just a question, do you know some decomposition reactions that are suitable for experiments for high school students and which can be found in our daily lives?
Because I want to relate this with the activation energy, by varying the temperature for different reactions.
Thank you for your advance.
Decomposition of hydrogen peroxide with potassium iodide or the decomposition of sugar with concentrated sulfuric acid.
@@stepbystepscience Thanks for your response!
If you have other suggestions, please feel free to tell me. :)
Great video thanks.
Thank you so much! Finals are next week and I still didn't understand Decomposition and how to balance it, but now I'm starting to get it. Really, thanks!
ive got finals tomorrow and im last minute studying (and hello haz in your profile)
Awesome video! So helpful!
EliteTech Thank you very much for the positive comment.
great video
How do you know how to split the beginning compound?
If it is a simple binary compound just split it down the middle, otherwise there are more specific rules for decomposition of carbonate and other compounds,
chem.libretexts.org/Textbook_Maps/Introductory_Chemistry/Book%3A_Introductory_Chemistry_(CK-12)/11%3A_Chemical_Reactions/11.5%3A_Decomposition_Reactions
I love this
The first reaction you demonstrated, was it an endothermic or exothermic reaction? Great videos. Thanks!
Exothermic, releases a lot of energy/heat.
Yes, very helpful. Doing a 4th grade science fair. Thanks.
Hope the science fair project works out well
Can someone explain this:
barium carbonate -> _____ +______
I'm not sure how to solve, because a polyatomic ion can't be by itself right?
Before I ask my question, All the labs you did were awesome. I understand most of it. however I don't get c12h22o11 one Can't you make CO2 instead of H2O?
Hello. I am conducting a biology experiment that focuses on the decomposition rate of fast food fries vs. homemade. The only problem is.. I don't really know how to measure the rate of decomposition. Any ideas? Anything helps!
Just go with the amount of mold. Look on youtube, i am sure there are some videos about it.
Man is this outdated. Chemistry was debunked a while ago. Jk this just passed me on a test. Thx dude! You're incredible
Glad you think so!
why when decomposing sugar do you not used the decomposed water formula in there
What do you mean the "decomposed water formula", the water does not decompose in the reaction
Can you please make a video about how the carbonates etc. decompose
Nice explanation sir
👨🎓 from 🇮🇳
Thanks so much!
Great video!
Thanks for saying so!
thank u this helps me sm
So glad to be of help
Very nice presentation! (y) :)
liandrejohndc88 Thanks for the comment, I think they turned out nicely myself.
great! CHEMISTRY IS FUN
sir please explain how it decompos according to their reactivity
THAT WAS SO COOL!
Thanks, the example reactions make it more interesting.
thanks for the great video
Glad you enjoyed it, thanks for the comment.
Thanks and was very useful
You are very welcome.
Thank you
Hi why in the 3rd problem you left the c alone?
Ana N Good question, but that is just how sugar decomposes, to carbon + water
+Brian Swarthout Do we just memorize this or is it something we can determine by looking at the equation?
thank you
THANK YOU SO MUCH BRO you just saved me from failing my science final
Great to hear! You are most welcome.
I've watched over 14 videos and I still don't get it. I get the simple parts but I don't get how something like 2KClO3 ----> 2KCL + 3O2. I do not understand why the oxygen is not written with Cl or K?
Some equations are relatively easy, like many of the double replacement reactions. Others are not so regular and must either "memorized". There are regular patterns, for the decomposition of carbonates and carbonates for example. Here is a good website.
www.chemteam.info/Equations/Decomposition.html
You will notice that chlorates (ClO3) often decompose into the metal/nonmetal compound + O2.
You will notice that carbonates (CO3) often decompose into the metal oxide + CO2.
Hope that helps a little.
Thank you so much! That makes a lot more sense. So basically you need to memorize what carbonate and chlorate produces? And also, do you have a video on distinguishing aqueous, solid, liquid, and gas compounds?
Sorry another question, for incomplete combustion, how do you know if it produces H2O + carbon dioxide + C + carbon monoxide, or it's only + C, or + carbon monoxide ? Thank you so much! I have a science test tomorrow and my teacher is not so good at explaining! Your videos have helped me greatly.
***** see this website:
www.chemistryhelp.net/basic-chemistry/complete-and-incomplete-combustion
It depends on how much O2 is present, normally I would say the products of incomplete combustion are just: H2O and CO. But if there is only a small amount of O2 then the products are usually stated as H2O and C.
Good luck on the test.
I still don't get it, but it's okay. Thank you so much for your help!
For Na2CO3 --> Na2O + Co2
Why does O move next to sodium and not stay by CO3
im confused too
Can someone tell me why the "O" is added to "Na" in the product of the second equation he does? I have that exact question on my review for my test tomorrow and I don't understand how you know to add the oxygen!
Jessica Kelley that is just the way a metal (Na) carbonates decomposes, into the metal oxide and carbon dioxide. You basically have to memorize that general process. See this website. Hope that helps, hope the test goes well, happy holidays.
www.gcsescience.com/pt18.htm
Thank you! Happy holidays to you as well :)
Good teacher
Many thanks and best wishes
thanks
Thanks❤
Welcome!
thank you:)
Vary good
Does anyone know why the third problem he did was not combustion?
CaliHcO197 Generally a combustion reaction will always have oxygen gas (O2) as one of the reactants. Combustion is burning and you need oxygen to burn something.
Damn why cant we do these labs. Thats plain awesome!
Yes, effect is good and gets peoples attention, thanks for commenting.
YOU BROKE ONE OF THE RULES, every time your in a lab WEAR GLOVESSSSSSS 🧤
Hmmm, sorry I forgot.
Thanks sir for the help
Happy to help and thanks for the comment.
It would be nice if you explained the reason for each product formed like you explained the first. I got lost after that. ex: why does Na pair with O? why do you form CO2? The rule AB---->A+B is self explanatory with eyes closed. What matters are those special rules (probably the reason we all come here for). Those aren't explained in my book, nor by my professor. That's what I'd suggest, explain the concept, like the rules of the diatomic elements or the decomposition of certain gases. That's the confusion here.
Yes the first one is easy. Then there are some rules or patterns you should be familiar with for the others. This page goes over them nicely;
www.chemteam.info/Equations/Decomposition.html
piyush
for H2O2, you wrote it breaks down to H2O + O2, shouldn't it break down to H2 + O2 ?
John Barns Nope, it goes to water and oxygen gas.
Thx boss
Welcome
Very informative video
Edit expecting a reply from you
Thank you for the positive comment. Is that the reply you were expecting from me?
my grades have been blessed by you, thank you sir
I'm glad to hear that. Best wishes to you.
@@stepbystepscience How Do We Get To Know The Products?
@@stepbystepscience How Do We Get To Know The Products?
@@stepbystepscience How Do We Get To Know The Products?
@@stepbystepscience How Do We Get To Know The Products?
thankz.
+IBito Eight You are very welcome! You can see a listing of all my videos at my website,www.stepbystepscience.com
what even are diatomic gases
Diatomic gases are gases that naturally occur as diatomic (two atoms) molecules. For example the chemical formula for oxygen gas is O2 not just O. The diatomic gases are Br, I, N, Cl, H, O and F. ( rememberable because if you say them as a "word" they sound like the name Brinkle Hof)
Making homework easy!
Just for you!
Why is Na2O and not Na + NO3
Great question Kenneth Spencer, that is simply the way most metal carbonates decompose --> Metal Oxide + Carbon Dioxide.
Oh thanks, now I have a better chance of passing my test today
When we are hydrogen to change two or more
I do not understand your question....
Hey man I know you probably won’t see this but I have a quiz tomorrow and have no idea what im doing regarding decomposition, tingle replacement, and combinations. I have a D- and if I fail this I will fail the class. Please help
I hope it went well. Watch the videos and practice solving the problems.
Step-by-Step Science Thank you man! I got a B+ on it!! Thank you so much for your help!
2:22 why not NaCo?
Great question cocoarecords As a rule, in general, metal carbonates decompose into the metal oxide and carbon dioxide.
thanks!
Brinchlhof wow!
Yes, that is a good way to remember it.
Decomposition reaction is allways endothermic
You look like a guy I’d run into at Home Depot
Interesting, never heard that before.
+Brian Swarthout Shouldn't you use padded gloves and a fume hood and googles, and some more gloves??? lol
@Kaust Shroff, maybe not gloves but at least I should be wearing safety glasses!
My teacher calls the Diatomic gases "HOFBrINCl" (pronouned Hoff-brink-cle)... I guess BrINClHOF also works...
AlphaWolfHuskee( H)ave (N)o (F)ear (O)f (I)ce (C)old (B)ear
where the heck are his goggles?
You’re not wearing lab gloves or protective goggles 👀
You are right!
This was 8 years ago 💀💀💀
It’s 11 for me
(heolp me i dont usndersatand i ahve chem examt mrw)
How did the exam go?
im so confused....am i just stupid or....? cause Im looking at this like nope makes absolutely 0 sense to me lol
brinclhof lmfao
I'm so funny (looks aren't everything)!
Please be in Hindi
walter white
Not Really, but thanks.
Pee my pants
Does that mean that you liked the video or did not like the video? Either way.....you can see a listing of all my videos at my website, www.stepbystepscience.com
lol
The subtitles were disturbing
if you're going to have a youtube channel about science equations at least explain how to do it?
OK
What you did is a very bad practice. You work in the lab running an experiment with conc. H2SO4 without gloves. You have the reaction giving off very acidic steam. You should run the experiment in the fume compartment if you cant wear a mask. I can continue to name a few more. Ignoring these safety details overshadowed the knowledge you were trying to pass across. God help the people you train.
I dont like it when teachers solve a problem and dont state the reason why they did the steps they have done to solve that problem! Its so annoying!
Did I do that? When?, sometimes it is hard to explain every every step.
Brian Swarthout In the second, third and fourth problem. You don't tell us why the answers aren't like the first problem's answer.
I HATE CHEMISTRY :)
It's not that bad, practice makes perfect! But I know how you feel.
Great video!
Agreed!
Thanks so much!
thank you :)
You're welcome!