Ogljikovodiki so temelj organske kemije in jih srečuješ povsod -... Show more
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Updated Apr 19, 2026
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Osnove ogljikovodikov in njihove vrste
1 / 7
Kaj so ogljikovodiki?
Predstavljaj si ogljikovodike kot LEGO kocke kemije - iz samo dveh vrst atomov (ogljik in vodik) lahko zgradiš tisoče različnih molekul! Te spojine najdeš v nafti, zemeljskem plinu in plastiki.
Ključne delitve ogljikovodikov:
- Nasičeni ogljikovodiki (alkani) - imajo samo enojne vezi, zato so "polni" vodika
- Nenasičeni ogljikovodiki (alkeni, alkini) - imajo dvojne ali trojne vezi, zato lahko vežejo še več atomov
Homologna vrsta je kot družina spojin z isto splošno formulo. Vsak naslednji član ima eno -CH₂- skupino več - kot stopnice!
💡 Nasvet: Zapomni si predpone met-, et-, prop-, but- - potreboval jih boš pri vsakem poimenovanju!
Alkani - mirni velikani
Alkani so nasičeni ogljikovodiki z enojnimi vezmi. So kot stabilen prijatelj - zanesljivi, a ne preveč razburljivi kemično.
Splošna formula: CₙH₂ₙ₊₂ (to moraš znati na pamet!)
Če imaš 3 ogljikove atome , boš imel C₃H₈ vodikovih atomov. Enostavno!
Prvih 10 alkanov: Metan (CH₄), etan (C₂H₆), propan (C₃H₈), butan (C₄H₁₀), pentan (C₅H₁₂), heksan (C₆H₁₄), heptan (C₇H₁₆), oktan (C₈H₁₈), nonan (C₉H₂₀), dekan (C₁₀H₂₂).
🔥 Pomembno: Vsa imena se končajo na -an. To je tvoj prvi namig, da gre za alkan!
Alkeni - dvojno močnejši
Alkeni so nenasičeni ogljikovodiki z vsaj eno dvojno vezjo C=C. Ta dvojna vez jih dela bolj reaktivne - kot da imajo več energije za kemijske reakcije.
Splošna formula: CₙH₂ₙ - opazi, da imajo manj vodikovih atomov kot alkani!
Najenostavnejši je eten (C₂H₄) - potrebuješ vsaj dva ogljikova atoma za dvojno vez. "Meten" ne obstaja!
Primeri: eten (C₂H₄), propen (C₃H₆), buten (C₄H₈)
⚡ Ključno: Končnica -en ti pove, da gre za alken z dvojno vezjo!
Alkini - trojno močni
Alkini so najbolj reaktivni ogljikovodiki z trojno vezjo C≡C. Trojna vez jim daje ogromno energije za kemijske reakcije.
Splošna formula: CₙH₂ₙ₋₂ - imajo najmanj vodikovih atomov!
Najenostavnejši je etin (C₂H₂), znan tudi kot acetilen za varjenje. Spet potrebuješ vsaj dva ogljikova atoma.
Primeri: etin (C₂H₂), propin (C₃H₄), butin (C₄H₆)
🎯 Zapomni si: Končnica -in = trojna vez = najbolj reaktiven!
Reševanje primerov
Primer 1: Spojina C₆H₁₂ - katera je?
Preprosto preverjaš splošne formule:
- Alkani: C₆H₁₄ ❌
- Alkeni: C₆H₁₂ ✅
- Alkini: C₆H₁₀ ❌
Odgovor: heksen
Primer 2: Molekulska formula za oktan?
Okt- pomeni 8 C atomov, -an pomeni alkan. Uporabiš CₙH₂ₙ₊₂: C₈H₁₆₊₂ = C₈H₁₈
📝 Nasvet: Vedno najprej ugotovi število C atomov iz predpone, potem uporabi pravo splošno formulo!
Hitri pregled za test
Tabela za hitre preverjanje:
| Vrsta | Vez | Formula | Končnica | Primer |
|---|---|---|---|---|
| Alkani | C-C | CₙH₂ₙ₊₂ | -an | Propan C₃H₈ |
| Alkeni | C=C | CₙH₂ₙ | -en | Propen C₃H₆ |
| Alkini | C≡C | CₙH₂ₙ₋₂ | -in | Propin C₃H₄ |
Pri strukturnih formulah vedno preveri: ima vsak ogljikov atom natanko 4 vezi? Če ne, dodaj manjkajoče vodikove atome!
Ključne predpone: met(1), et(2), prop(3), but(4), pent(5), heks(6), hept(7), okt(8), non(9), dek(10)
🏆 Za odličen test: Nauči se predpone, splošne formule in pomen končnic. To pokriva 80% vprašanj!
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Where can I download the Knowunity app?
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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
Osnove ogljikovodikov in njihove vrste
Ogljikovodiki so temelj organske kemije in jih srečuješ povsod - od bencina v avtomobilih do plastike v telefonu. To so spojine, ki vsebujejo samo ogljik in vodik, a kljub preprostosti tvorijo ogromno različnih molekul.
Kaj so ogljikovodiki?
Predstavljaj si ogljikovodike kot LEGO kocke kemije - iz samo dveh vrst atomov (ogljik in vodik) lahko zgradiš tisoče različnih molekul! Te spojine najdeš v nafti, zemeljskem plinu in plastiki.
Ključne delitve ogljikovodikov:
- Nasičeni ogljikovodiki (alkani) - imajo samo enojne vezi, zato so "polni" vodika
- Nenasičeni ogljikovodiki (alkeni, alkini) - imajo dvojne ali trojne vezi, zato lahko vežejo še več atomov
Homologna vrsta je kot družina spojin z isto splošno formulo. Vsak naslednji član ima eno -CH₂- skupino več - kot stopnice!
💡 Nasvet: Zapomni si predpone met-, et-, prop-, but- - potreboval jih boš pri vsakem poimenovanju!
Sign up to see the contentIt's free!
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Alkani - mirni velikani
Alkani so nasičeni ogljikovodiki z enojnimi vezmi. So kot stabilen prijatelj - zanesljivi, a ne preveč razburljivi kemično.
Splošna formula: CₙH₂ₙ₊₂ (to moraš znati na pamet!)
Če imaš 3 ogljikove atome , boš imel C₃H₈ vodikovih atomov. Enostavno!
Prvih 10 alkanov: Metan (CH₄), etan (C₂H₆), propan (C₃H₈), butan (C₄H₁₀), pentan (C₅H₁₂), heksan (C₆H₁₄), heptan (C₇H₁₆), oktan (C₈H₁₈), nonan (C₉H₂₀), dekan (C₁₀H₂₂).
🔥 Pomembno: Vsa imena se končajo na -an. To je tvoj prvi namig, da gre za alkan!
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Alkeni - dvojno močnejši
Alkeni so nenasičeni ogljikovodiki z vsaj eno dvojno vezjo C=C. Ta dvojna vez jih dela bolj reaktivne - kot da imajo več energije za kemijske reakcije.
Splošna formula: CₙH₂ₙ - opazi, da imajo manj vodikovih atomov kot alkani!
Najenostavnejši je eten (C₂H₄) - potrebuješ vsaj dva ogljikova atoma za dvojno vez. "Meten" ne obstaja!
Primeri: eten (C₂H₄), propen (C₃H₆), buten (C₄H₈)
⚡ Ključno: Končnica -en ti pove, da gre za alken z dvojno vezjo!
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Alkini - trojno močni
Alkini so najbolj reaktivni ogljikovodiki z trojno vezjo C≡C. Trojna vez jim daje ogromno energije za kemijske reakcije.
Splošna formula: CₙH₂ₙ₋₂ - imajo najmanj vodikovih atomov!
Najenostavnejši je etin (C₂H₂), znan tudi kot acetilen za varjenje. Spet potrebuješ vsaj dva ogljikova atoma.
Primeri: etin (C₂H₂), propin (C₃H₄), butin (C₄H₆)
🎯 Zapomni si: Končnica -in = trojna vez = najbolj reaktiven!
Sign up to see the contentIt's free!
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Reševanje primerov
Primer 1: Spojina C₆H₁₂ - katera je?
Preprosto preverjaš splošne formule:
- Alkani: C₆H₁₄ ❌
- Alkeni: C₆H₁₂ ✅
- Alkini: C₆H₁₀ ❌
Odgovor: heksen
Primer 2: Molekulska formula za oktan?
Okt- pomeni 8 C atomov, -an pomeni alkan. Uporabiš CₙH₂ₙ₊₂: C₈H₁₆₊₂ = C₈H₁₈
📝 Nasvet: Vedno najprej ugotovi število C atomov iz predpone, potem uporabi pravo splošno formulo!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Hitri pregled za test
Tabela za hitre preverjanje:
| Vrsta | Vez | Formula | Končnica | Primer |
|---|---|---|---|---|
| Alkani | C-C | CₙH₂ₙ₊₂ | -an | Propan C₃H₈ |
| Alkeni | C=C | CₙH₂ₙ | -en | Propen C₃H₆ |
| Alkini | C≡C | CₙH₂ₙ₋₂ | -in | Propin C₃H₄ |
Pri strukturnih formulah vedno preveri: ima vsak ogljikov atom natanko 4 vezi? Če ne, dodaj manjkajoče vodikove atome!
Ključne predpone: met(1), et(2), prop(3), but(4), pent(5), heks(6), hept(7), okt(8), non(9), dek(10)
🏆 Za odličen test: Nauči se predpone, splošne formule in pomen končnic. To pokriva 80% vprašanj!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
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.
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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