GCSE Chemistry - How to Test for Gases - Testing for Chlorine / Oxygen / Hydrogen / CO2 #64

[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

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I'm. L

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Chemistry isn't hard but when teacher makes it complicated then it is difficult lol!

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Facts

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This

[@carlo8308]

Actually

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so true

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Not gonna lie, this was pretty good in explaining how to test for gases. Keep up the great work!

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You cannot know how much your videos help us! Man you are a legend ❤️❤️❤️

[@Cognitoedu]

Happy to hear that! 🙌

[@bedwars1013]

I just test for gases by inhaling, it's a fun kind of Russian roulette in class.

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i like this idea

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carbon monoxide💀💀💀

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@@MuslimEDUOfficial chlorine ☠☠☠☠☠☠☠☠☠☠☠

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Bomb😊

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thank you so much, honestly such a hero :)

[@Cognitoedu]

Happy to hear it helped!

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Man thousands of students are thanking u

[@geezer1024]

small error I think: 2:53 in the equation for co2 and ca(OH)2 you say that Ca(OH)2 is a gas in the state symbol when I think it is aqueous.

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You gay for that bro let him teach me

[@maherischlong]

well spotted 👊🏼

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Anyone been sent here by a teacher in lockdown

[@MuslimEDUOfficial]

instructions unclear:i ended up hallucinating carbon monoxide instead of bubbling CO2 in the beaker of limewater, now my hands are cloudy and white instead

[@yellowmsp8570]

Thank you for this video but I just have a question when talking about the litmus paper turning red because chlorine dissolves in the water on the blue litmus paper you said that hydrogen chloride is made but isn't a reaction between chlorine and H20, hypochlorous acid?

[@jungoonosebiter]

Nono you see when you damp a litmus paper there's water means there's H2O so when it reacts with chlorine you get HCI, hydrochloric acid (the blue litmus paper turns red becuz its acidic) but then it will become HOCI (hypochlorous acid) because chlorine bleaches so litmus paper becomes from red to white

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Yes of course, by a plane or helicopter

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[@whyyoulooking4944]

And why the litmus paper in chlorine test turned white or colourless and what is meant by bleached?

[@teenagegirl43]

Bleached means it turns white

[@CauseOfBSOD]

1:42 instructions unclear, now my hand is burnt and the splint didnt relight

[@CauseOfBSOD]

(this is a joke)

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Why do hydrogen give a pop

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Who asked?

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