Redoxné reakcie sú všade okolo nás - v batériách našich... Show more
Chémia
Slovenský jazyk
Angličtina
MatematikaSign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
32
•
Updated Mar 27, 2026
•
Oxidačno-redukčné reakcie: Základy a význam
1 / 7
Základy redoxných reakcií
Predstav si redoxné reakcie ako veľký tanec elektrónov medzi atómami. Elektróny sa presúvajú z jedného atómu na druhý, čo spôsobuje zmeny v látkách okolo nás.
Oxidácia znamená, že atóm stratí elektróny - jeho oxidačné číslo sa zvýši. Napríklad sodík: Na → Na⁺ + e⁻. Redukcia je opak - atóm získa elektróny a jeho oxidačné číslo sa zníži, ako pri chlóre: Cl₂ + 2e⁻ → 2Cl⁻.
Oxidačné činidlo spôsobuje oxidáciu iných látok, pričom sa samo redukuje (kyslík je typický príklad). Redukčné činidlo naopak spôsobuje redukciu, pritom sa samo oxiduje (ako vodík či kovy).
💡 Tip na zapamätanie: OS = Oxidácia je Strata elektrónov, RZ = Redukcia je Získanie elektrónov
Pravidlá pre oxidačné čísla
Určovanie oxidačných čísel je ako hra s jasnými pravidlami, ktoré musíš ovládať nazpamäť. Voľné prvky (Fe, O₂, H₂) majú vždy oxidačné číslo 0, jednoduché ióny majú oxidačné číslo rovné ich náboju.
Vodík má takmer vždy +I . Kyslík má takmer vždy -II . Alkalické kovy majú vždy +I, kovy alkalických zemín +II.
Halogény majú väčšinou -I, ale pozor - fluór má vždy -I, ostatné môžu mať aj kladné čísla pri väzbe na kyslík. Súčet všetkých oxidačných čísel v neutrálnej molekule je 0, v iónoch je rovný náboju iónu.
💡 Skúška: V H₂SO₄ má síra oxidačné číslo +VI. Dokážeš si to overiť?
Ako funguje prenos elektrónov
Pri redoxnej reakcii sa nikdy nedeje len oxidácia alebo len redukcia - vždy oboje súčasne! Elektróny, ktoré jeden atóm stratí, musí druhý získať.
Pozrime si reakciu sodíka s chlórom: 2Na + Cl₂ → 2NaCl. Sodík mení oxidačné číslo z 0 na +I (oxidácia), chlór z 0 na -I (redukcia). Sodík je redukčné činidlo, chlór je oxidačné činidlo.
Tento prenos elektrónov môžeš sledovať cez zmeny oxidačných čísel. Ak sa oxidačné číslo zvýši, atóm stratil elektróny. Ak sa zníži, atóm elektróny získal.
💡 Dôležité: Oxidácia a redukcia sú ako tanečný pár - nikdy netancujú sami!
Vyrovnávanie redoxných rovníc
Vyrovnávanie redoxných rovníc má šesť jasných krokov, ktoré fungujú ako návod na skladanie IKEA nábytku - dodržuj poradie a všetko vyjde.
Najprv urč oxidačné čísla všetkých atómov. Potom nájdi atómy, ktorým sa oxidačné číslo zmenilo. Zapíš zmeny elektrónov pre oxidáciu a redukciu.
Kľúčový je štvrtý krok - nájdi najmenší spoločný násobok pre počet odovzdaných a prijatých elektrónov. Týmto násobkom vynásob zmeny, aby sa elektróny vyrovnali. Prenes koeficienty do pôvodnej rovnice a nakonec dovyrovnaj zvyšné atómy.
💡 Pamätaj: Pri vyrovnávaní najprv kovy, potom nekovy (okrem H a O), nakoniec H a O
Príklad: Meď s kyselinou dusičnou
Skúsme si vyrovnať: Cu + HNO₃ → Cu(NO₃)₂ + NO + H₂O. Toto je klasická redoxná reakcia, ktorá ti ukáže, ako funguje celý proces v praxi.
Meď mení oxidačné číslo z 0 na +II (stráca 2 elektróny), dusík z +V na +II (získava 3 elektróny). Najmenší spoločný násobok pre 2 a 3 je 6, takže potrebujeme 3 atómy medi a 2 atómy dusíka.
Pozor na dusík v Cu(NO₃)₂ - ten si zachováva oxidačné číslo +V! Finálna vyrovnaná rovnica je: 3Cu + 8HNO₃ → 3Cu(NO₃)₂ + 2NO + 4H₂O. Vždy si na konci skontroluj počet atómov každého prvku.
💡 Trick: Niektoré atómy sa nezúčastňujú redoxu, ale stále ich musíš dovyrovnať!
Praktické tipy a kontrola
Vyrovnávanie redoxných rovníc si vyžaduje cvičenie, ale s týmito tipmi ti to pôjde ľahšie. Vždy začni od atómov, ktorým sa zmenilo oxidačné číslo - to sú hlavní "aktéri" reakcie.
Pri kontrole si over nielen počet atómov, ale aj celkový náboj na oboch stranách rovnice. Oxidačné číslo nie je to isté ako náboj - je to len pomôcka na sledovanie elektrónov.
Pamätaj si, že polyatomické ióny majú svoje vlastné pravidlá. V SO₄²⁻ najprv urč oxidačné číslo kyslíka a potom dopočítaj síru tak, aby súčet bol -2.
💡 Pre úspech: Bez precvičovania to nepôjde - rieš čo najviac príkladov!
Rýchly prehľad na písomku
Redoxné reakcie sú prenos elektrónov - oxidácia je strata (OČ rastie), redukcia je zisk (OČ klesá). Oxidačné činidlo sa redukuje, redukčné činidlo sa oxiduje.
Pri určovaní oxidačných čísel: voľné prvky 0, H takmer vždy +I, O takmer vždy -II, súčet v molekule 0, v ióne = náboj. Pri vyrovnávaní: OČ → zmeny → elektróny → NSN → koeficienty → H,O.
Tieto reakcie sú kľúčové pre pochopenie horenia, dýchania, korózie či fungovania batérií. S dobrým pochopením základov a dostatok cvičenia zvládneš každú redoxnú rovnicu na písomke.
💡 Záver: Ovládni pravidlá, precvič si príklady a redox prestane byť strašiak!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content in Chémia
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Oxidačno-redukčné reakcie: Základy a význam
Redoxné reakcie sú všade okolo nás - v batériách našich telefónov, pri dýchaní, hrdzavení kovov či horení. Ide o reakcie, kde si atómy vymieňajú elektróny ako futbalisti loptu na ihrisku.
Základy redoxných reakcií
Predstav si redoxné reakcie ako veľký tanec elektrónov medzi atómami. Elektróny sa presúvajú z jedného atómu na druhý, čo spôsobuje zmeny v látkách okolo nás.
Oxidácia znamená, že atóm stratí elektróny - jeho oxidačné číslo sa zvýši. Napríklad sodík: Na → Na⁺ + e⁻. Redukcia je opak - atóm získa elektróny a jeho oxidačné číslo sa zníži, ako pri chlóre: Cl₂ + 2e⁻ → 2Cl⁻.
Oxidačné činidlo spôsobuje oxidáciu iných látok, pričom sa samo redukuje (kyslík je typický príklad). Redukčné činidlo naopak spôsobuje redukciu, pritom sa samo oxiduje (ako vodík či kovy).
💡 Tip na zapamätanie: OS = Oxidácia je Strata elektrónov, RZ = Redukcia je Získanie elektrónov
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Pravidlá pre oxidačné čísla
Určovanie oxidačných čísel je ako hra s jasnými pravidlami, ktoré musíš ovládať nazpamäť. Voľné prvky (Fe, O₂, H₂) majú vždy oxidačné číslo 0, jednoduché ióny majú oxidačné číslo rovné ich náboju.
Vodík má takmer vždy +I . Kyslík má takmer vždy -II . Alkalické kovy majú vždy +I, kovy alkalických zemín +II.
Halogény majú väčšinou -I, ale pozor - fluór má vždy -I, ostatné môžu mať aj kladné čísla pri väzbe na kyslík. Súčet všetkých oxidačných čísel v neutrálnej molekule je 0, v iónoch je rovný náboju iónu.
💡 Skúška: V H₂SO₄ má síra oxidačné číslo +VI. Dokážeš si to overiť?
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Ako funguje prenos elektrónov
Pri redoxnej reakcii sa nikdy nedeje len oxidácia alebo len redukcia - vždy oboje súčasne! Elektróny, ktoré jeden atóm stratí, musí druhý získať.
Pozrime si reakciu sodíka s chlórom: 2Na + Cl₂ → 2NaCl. Sodík mení oxidačné číslo z 0 na +I (oxidácia), chlór z 0 na -I (redukcia). Sodík je redukčné činidlo, chlór je oxidačné činidlo.
Tento prenos elektrónov môžeš sledovať cez zmeny oxidačných čísel. Ak sa oxidačné číslo zvýši, atóm stratil elektróny. Ak sa zníži, atóm elektróny získal.
💡 Dôležité: Oxidácia a redukcia sú ako tanečný pár - nikdy netancujú sami!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Vyrovnávanie redoxných rovníc
Vyrovnávanie redoxných rovníc má šesť jasných krokov, ktoré fungujú ako návod na skladanie IKEA nábytku - dodržuj poradie a všetko vyjde.
Najprv urč oxidačné čísla všetkých atómov. Potom nájdi atómy, ktorým sa oxidačné číslo zmenilo. Zapíš zmeny elektrónov pre oxidáciu a redukciu.
Kľúčový je štvrtý krok - nájdi najmenší spoločný násobok pre počet odovzdaných a prijatých elektrónov. Týmto násobkom vynásob zmeny, aby sa elektróny vyrovnali. Prenes koeficienty do pôvodnej rovnice a nakonec dovyrovnaj zvyšné atómy.
💡 Pamätaj: Pri vyrovnávaní najprv kovy, potom nekovy (okrem H a O), nakoniec H a O
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Príklad: Meď s kyselinou dusičnou
Skúsme si vyrovnať: Cu + HNO₃ → Cu(NO₃)₂ + NO + H₂O. Toto je klasická redoxná reakcia, ktorá ti ukáže, ako funguje celý proces v praxi.
Meď mení oxidačné číslo z 0 na +II (stráca 2 elektróny), dusík z +V na +II (získava 3 elektróny). Najmenší spoločný násobok pre 2 a 3 je 6, takže potrebujeme 3 atómy medi a 2 atómy dusíka.
Pozor na dusík v Cu(NO₃)₂ - ten si zachováva oxidačné číslo +V! Finálna vyrovnaná rovnica je: 3Cu + 8HNO₃ → 3Cu(NO₃)₂ + 2NO + 4H₂O. Vždy si na konci skontroluj počet atómov každého prvku.
💡 Trick: Niektoré atómy sa nezúčastňujú redoxu, ale stále ich musíš dovyrovnať!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Praktické tipy a kontrola
Vyrovnávanie redoxných rovníc si vyžaduje cvičenie, ale s týmito tipmi ti to pôjde ľahšie. Vždy začni od atómov, ktorým sa zmenilo oxidačné číslo - to sú hlavní "aktéri" reakcie.
Pri kontrole si over nielen počet atómov, ale aj celkový náboj na oboch stranách rovnice. Oxidačné číslo nie je to isté ako náboj - je to len pomôcka na sledovanie elektrónov.
Pamätaj si, že polyatomické ióny majú svoje vlastné pravidlá. V SO₄²⁻ najprv urč oxidačné číslo kyslíka a potom dopočítaj síru tak, aby súčet bol -2.
💡 Pre úspech: Bez precvičovania to nepôjde - rieš čo najviac príkladov!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Rýchly prehľad na písomku
Redoxné reakcie sú prenos elektrónov - oxidácia je strata (OČ rastie), redukcia je zisk (OČ klesá). Oxidačné činidlo sa redukuje, redukčné činidlo sa oxiduje.
Pri určovaní oxidačných čísel: voľné prvky 0, H takmer vždy +I, O takmer vždy -II, súčet v molekule 0, v ióne = náboj. Pri vyrovnávaní: OČ → zmeny → elektróny → NSN → koeficienty → H,O.
Tieto reakcie sú kľúčové pre pochopenie horenia, dýchania, korózie či fungovania batérií. S dobrým pochopením základov a dostatok cvičenia zvládneš každú redoxnú rovnicu na písomke.
💡 Záver: Ovládni pravidlá, precvič si príklady a redox prestane byť strašiak!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
0
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Mock Exam
Quiz
Flashcards
Essay
Most popular content in Chémia
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user