Αύριο γράφω διαγώνισμα α λυκεόιου χημεία ,με ύλη όλο το κεφάλαιο 2.....Πραγματικά ο άνθρωπος με έκανε να τα καταλάβω ΟΛΑΑΑΑ ΣΕ ΛΙΓΟ ΧΡΟΝΙΚΟ ΠΕΡΥΘΟΡΙΟ !!!!!!
@giorgosmastorellos74315 сағат бұрын
Πως τα πήγες μπρο
@Ανύψωσις4 күн бұрын
τι έριξε το παιδί μέσα στην κάψα εκτός απο την γλυκερόλη;
@chatzida4 күн бұрын
Υπήρχε ήδη υπερμαγγανικό κάλιο και στο τέλος έριξε λίγες σταγόνες νερό.
@Ανύψωσις3 күн бұрын
@@chatzida γιατί έριξε νερο; αυτό επιτάχυνε την αντίδραση; Ευχαριστώ πολύ
@chatzida3 күн бұрын
@Ανύψωσις ναι, αυτό διέλυσε μια ποσότητα υπερμαγγενικού καλίου και έτσι ξεκίνησε η αντίδραση πιο σύντομα.
@theresaknockatyourfrontdoor7 күн бұрын
dang you come in clutch here >:D
@vasilis-s4j10 күн бұрын
ΤΕΡΑΣΤΙΟ ΕΥΧΑΡΙΣΤΩ
@nguyenthuy982413 күн бұрын
Thanks Video. However I've once question is that - how have you checked aluminium ion or ferrous ion or zinc ion in water before titrating hardness water yet? Because not only calcium ion, magieum ion will be complex but also these ions (Al3+, Zn2+, Fe2+....) will be complex so. And how did you coat these ions in solution?
@GreekGrace14 күн бұрын
Η αντίδραση με το εκχύλισμα λάχανου και το ξύδι, είναι καρβοξυλικο οξύ με οξύ πάλι; Εννοώ τι ένωση είναι το εκχύλισμα που περιέχει τον δείκτη ;
@chatzida10 күн бұрын
O δείκτης που έχει το εκχύλισμα λαχανου είναι μια ανθοκυανίνη και είναι ασθενές οξύ.
@Ανύψωσις14 күн бұрын
γιατι αφυδατωνεται πιο ευκολα η 3οταγης και η 2οταγης σε σχεση με την 1οταγη;
@chatzida10 күн бұрын
H αφυδάτωση ευνοείται από μηχανισμό απόσπασης Ε1 που έχει ως ενδιά,εσο καρβοκατιόντα (άνθρακες με θετικό φορτίο). Όταν αποχωρήσει το υδροξύλιο από 3οταγή αλκοολή το καρβοκατιον είναι πολύ σταθερό (άρα ευνοείται ο σχηματισμός του!) επειδή υ΄παρχει ισχυρό +Ι φαινόμενο από τα 3 αλκύλια με τα οποία είναι ενωμένος ο C με το θετικό φορτίο.
@Ανύψωσις10 күн бұрын
@chatzida ευχαριστώ πολύ
@anastasistzaras738917 күн бұрын
Ευχαριστω πολυ με βοηθησε πααααρα πολυ!!
@zodd000126 күн бұрын
you are great !
@TimothyRoyal-g8z27 күн бұрын
They’re all interesting.
@HarryChestMasterАй бұрын
In a lab without a proper lab coat. 😢
@abdullahyigitmutlu9366Ай бұрын
I have the answers but all i can understand he is talking some caucasian language maybe georgian.God I am lost but that's something more so i pretend it never happened
@promisteryolo1786Ай бұрын
Ειμαι απιστευτα ευγνώμων για τη δουλεια που κανετε. Μας φερανε εναν φυσικο που δεν εχει ιδεα απο βιολογία αλλα τα βίντεο σας με εχουν βοηθήσει να καταλαβω το μαθημα
@chatzidaАй бұрын
Ευχαριστώ πολύ! Αυτός ήταν και ο λόγος που εφτιαξα αυτά τα βίντεο. Και για να αγαπήσουν έστω κάποιοι μαθητές τη Βιολογία που είναι μια γοητευτική επιστήμη!
@chemistyfactsАй бұрын
7:31 how is this possible that CuSO4 soln. is white
@马昕宇-f1w2 ай бұрын
Cool!
@vinn.6402 ай бұрын
what is the role of sulfuric acid here??
@echoofthepast072 ай бұрын
Hi, I'm preparing to do this titration and I was just wondering what the concentration/method of preparation of the ammonia buffer solution was. I'd really appreciate it if you could send me the source material if there was any. Thank you so much!
@chatzida2 ай бұрын
This is how you will prepare the buffer solution. For 200 mL buffer pH=10, 1M in ammonia: Add 13.5 mL of 25 % ammonia solution to 50 mL deionized water. In this dissolve 1.94 g of solid NH4Cl. Add water to 200 mL final volume and mix. Sorry for the delay.
@echoofthepast072 ай бұрын
@@chatzida no problem! thank you so much!
@Best.Chem.612Ай бұрын
@@chatzida Can you share the calculation for buffer pH= 10. I mean why we take 13.5 mL of 25% ammonia solution and 1.94 g of ammonium chloride.
@SinghMaria-kr8ni2 ай бұрын
Καλησπέρα, το παράδειγμα με το Κ μάλλον η απάντηση είναι 20 επειδή 39-19 = 20
@chatzida2 ай бұрын
Ναι, έχει μείνει αναπάντητο για 8 χρόνια :)
@SinghMaria-kr8ni2 ай бұрын
@@chatzida το βίντεο σας είναι βοηθητικό ακόμη και μετά από 8 χρόνια 👏 , ευχαριστώ 💖
@RenukaSandamali-zn2po2 ай бұрын
Amazing 🤓🤓🤓
@chatzida2 ай бұрын
Thank you!
@dinisestima2 ай бұрын
Can you do the can implosion with a regular lighter??
@chatzida2 ай бұрын
I don't think so but you can always try!
@davidwilkerson19042 ай бұрын
Please come up with a better solution for sound rather than such repetitive music. I honestly would rather have silence or classroom sounds. The song gets spun over so much that I get seasick.
@chrisbeaman77843 ай бұрын
Not a pair of safety glasses in sight
@ayaanali-uj7wh3 ай бұрын
how long will the colour stay??
@chatzida3 ай бұрын
Usually from 10 to 30 seconds. The purple one faints faster because Rhodamine is not fully excited by Luminol.
@dibby19793 ай бұрын
That's so cool!
@chatzida3 ай бұрын
Thank you! We had a great group of students this year!
@riyaj96363 ай бұрын
Is the wine drinkable?
@chatzida3 ай бұрын
Yes, since there is some preservative included. Nevertheless, fermentation should take place in a cool place, otherwise some vinegar will be produced.
@konsunday95774 ай бұрын
Wow❤
@VtmaniMD1434 ай бұрын
I was so happy to hear the word called GOLD!!
@shraddhanair52544 ай бұрын
can you explain the principle behind calcium content being found ?
@its.me.khanyo4 ай бұрын
The blooper😂😂😂
@lenkaweglarz5 ай бұрын
Thank you! Your video really helped me to get to understand this process. Very useful!
@chatzida5 ай бұрын
I am glad that it was helpful!
@ΑγνηΒλαχου-χ3ζ6 ай бұрын
στα μαθηματα στο πανεπιστημιο που θα περασουμε χαρης στα βιντεο σας , προσφερουμε ενΑ ΜΕΓΑΛΟ ΕΥΧΑΤΙΣΤΩ!
@ΑγνηΒλαχου-χ3ζ6 ай бұрын
υπεροχη παρουσιαση ..σας ευχαριστουμε πολυ!!
@abisenaguna5486 ай бұрын
This is how we think when mixing random things in the bathroom
@EllieVolanaki6 ай бұрын
Ευχαριστούμε! Πολύ βοητικό το βίντεο σας και χρήσιμη η οπτικοποίηση των πληροφοριών!
@chatzida6 ай бұрын
Σε ευχαριστώ κι εγώ!
@Withrajasikandarazam6 ай бұрын
How many peoples are in India 😅❤
@EsnzSbzbsb6 ай бұрын
Να ειστε καλα και εσεις και ο κυριος Χατζηδακης, πραγματικα τα μονα βιντεο που μπορω να κατανοησω
@kayeblade59486 ай бұрын
Dabi and sanjis room
@MITStemGirl8 ай бұрын
Amazing experiments.
@MITStemGirl8 ай бұрын
This video is awesome.
@WildlifeWarrior-yd1fq8 ай бұрын
The video is better with the volume turned down
@anujsharma78538 ай бұрын
It's a gem for me. Love from India
@GulamRashoolAnsari-y2s9 ай бұрын
Only science lover can understant the beauty ,
@GulamRashoolAnsari-y2s9 ай бұрын
Wooooow 🎉
@fredericdesalpes58249 ай бұрын
Beautiful and Useful, for our young students , thank you so much Sir ...Fred/France
@גדאור-ג7ע9 ай бұрын
hello again i can not get my starch transparent maybe bc i am using cornflower ? should i use different starch? thx
@chatzida9 ай бұрын
I guess yes. I use "soluble starch" most probably prepared from potato
@גדאור-ג7ע9 ай бұрын
@@chatzida thx very much
@HarryChestMasterАй бұрын
Try fine powdered rice starch as starch source. Boil it, cool it down and filter it. That should work as you would filter out most of the "nasties".
@גדאור-ג7ע9 ай бұрын
hello my friend because you're in chemistry I would like to know is there any way to make transparent starch solution? because I tried to filter it and it doesn't work .thx
@chatzida9 ай бұрын
I prepare my 2% starch solution in a way that it is transparent. I boil 100 mL of water in a beaker (beaker A), and in a separate beaker (B) I weigh 2 g of starch. Then I add a very small amount of room temperature water on the starch and I mix with a glass rod to make a slurry (not a solution). It is important to add the proper amount of water; we do not want starch powder nor solution but a slurry. Then I pour the hot water of beaker A to beaker B and stir thoroughly with a rod or magnetic stirrer. The resulting starch solution is transparent! But keep in mind that starch solutions are not preserved too long because bacteria and fungi love them!
@גדאור-ג7ע9 ай бұрын
@@chatzida thx but what is a magnetic stirrer and does this make it transperent thx
@גדאור-ג7ע9 ай бұрын
@@chatzida thx my friend this is what I did but its not really transparent. i.e like water .if i use Maltodextrin can it be clear like water? bc i know it has starch in it thx a lot
@mr.rosenberg19589 ай бұрын
and not a single pair of safety goggles
@quiverixx9 ай бұрын
let him cook
@karagumruklu129 ай бұрын
What is petrol?
@dabiransari240610 ай бұрын
Can you explain chemical reactions behind of last clip fly rocket??