1, Hydrogen: "Pop" sound when taking a flaming splint (matchstick) near the reaction vessel. 2, Oxygen: A "glowing" splint put near the mouth of the reaction vessel, then it will turn out flaming again. 3, Carbon dioxide: Test with lime water, a positive result is turning out a milky solution. 4, Ammonia: Turns red litmus paper to blue. 5, Chlorine: Turns blue litmus paper to red then bleach
If your hearing is impaired, you can put a glass slide over the splint and you will see water droplets made. You can test the water droplets with cobalt chloride paper , which will turn pink.
Fantastic and so useful during lockdown - thank you. I really like the replacement of the tiny electrolysis equipment that we have - you could still collect the gases in upturned ignition tubes. Brilliant, thank you again
nice clear video - great summary pages for each test. Just one correction - at 2'28" you say that marble chip is calcium chloride, when it is calcium carbonate.
Istg, this is the best chemistry practical video I've ever seen!! It's sooo nice and clear. Your video is soo helpful for me as an IGCSE (9-1) student. Thank you a lott 🤍
I got a question when he was testing for co2 gas he said that marble chips are calcium chloride. How’s that? I think marble chips are calcium carbonate not calcium chloride. Isn’t that correct?
Hi Obla, I used HCl. The more concentrated the acid the quicker the reaction (hydrogen gets produced faster), the more dilute the acid the slower the reaction (hydrogen gets produced slower).
Nice but it's not calcium chloride, it's calcium carbonate that produces carbon dioxide with hydrochloric acid. U can't edit the UA-cam video, so I suggest u comment it and pin it. Or pin mine 🙂
Hi yes it was a slip of the tongue as I was recording. I added a card at the top of the video but I think some viewers don’t get the card. Thanks for flagging.
this is better than the other video my teacher sent on google classroom
Im here from Google classroom sent by my teacher 😉
@@zayanalikhan7302 you to
@@2squid Same here!
Same cuz all of y7,8 and 10 got sent home
sameeee
1, Hydrogen: "Pop" sound when taking a flaming splint (matchstick) near the reaction vessel.
2, Oxygen: A "glowing" splint put near the mouth of the reaction vessel, then it will turn out flaming again.
3, Carbon dioxide: Test with lime water, a positive result is turning out a milky solution.
4, Ammonia: Turns red litmus paper to blue.
5, Chlorine: Turns blue litmus paper to red then bleach
ugh ty
hero
Who else had this for your lockdown science lesson
I did
me
Omg yes
nahhh, evryone sub, he deserves so much more subscribers. legend.
Guy: so when you light the hydrogen gas, it should make a popping sound.
*Deaf people: Am i a joke to you?*
Those who cannot hear well, can put a glass slide above the splint and will observe droplets of water made.
If your hearing is impaired, you can put a glass slide over the splint and you will see water droplets made. You can test the water droplets with cobalt chloride paper , which will turn pink.
@@Swiftaylor Yes and that was a fun and useful response
@@zni1925 r/wooosh
ur a legend
Fantastic and so useful during lockdown - thank you. I really like the replacement of the tiny electrolysis equipment that we have - you could still collect the gases in upturned ignition tubes. Brilliant, thank you again
Thanks
this was actually so helpful, thanks ☺️✌🏼✨🧚🏼♀️
Awesome! Pleased it helped. 😃
nice clear video - great summary pages for each test. Just one correction - at 2'28" you say that marble chip is calcium chloride, when it is calcium carbonate.
Thanks, I got confused too
writing Alevel chem prac tomorrow veryyyyy useful thank youuuuu loaddssssssss of love from zimbabwe
Excellent presentation
Thank you for your kind feedback!
THANK YOU SO MUCH, TOMORROW I HAVE GASES TEST FOR OXYGEN, HYDROGEN, CARBON DIOXIDE AND CHLORINE ITS USEFUL AND HELP ME TOO MUCH
Pleased it helped!
Nice one!
very well explained and very helpful thank you
Eecellent clear demos, with great voice. Thanks
My teacher sent this to me. Very helpful! We're learning properties of gases
Awesome! Thanks for the feedback.
very useful and amzing explaination
This was very useful... thanks...
Brilliant video but please correct the name of the calcium compound used for CO2 - obviously just a slip. Great video though
THANK U, this was really helpful
you are the best ihave ever seen
This is wonderful thank you....got an igcse exam tomorrow 😃
I am pleased it was useful. Thanks
im doing this in year 8 bruh
I like your surname😍
@@tawanaevans8401 what does it mean
Superb presentation excepting more video like this 👍👍👍👍👍👍😀😀😍😍😘😘
BTW where are u from, sir
Thank you so much 😀
Thanks for this.
Most excited lesson....
Your are good teacher I dream to be
Cool science
it was easy and intresting
thanks for sharing these video
Great video!
Istg, this is the best chemistry practical video I've ever seen!! It's sooo nice and clear. Your video is soo helpful for me as an IGCSE (9-1) student. Thank you a lott 🤍
Thank you sir 💪🏼
Very useful summary!🧪
There's another way to test for CO2: trap the gas in a test tube, light a splint and place it in the test tube.
*The flame will extinguish*
Thank you so much Sir, I request you to help us more with videos like these
yeah
Thanks so much for this experiment
very useful, thank you
this was totally useful thank you!
MERCI BEAUCOUP
My science teacher said I should watch this for class
Good video 🎉😊
Please sir can you try to test CO2 with a glowing splint since CO2 is a fire extinguisher it will off the flame
Very useful. Thanks :D
Glad it was helpful!
@@ScienceRevisionChannel I got a reply from the creator! Thank you so much, I watch all your videos :D
😄 you are welcome!
hi schoolers
ayy olly
Hi I am noah lol
piss piss
Aight gerkin
instead of making carbon dioxide, just bubble with your mouth through a straw, the mouth already produces carbon dioxide when breathing
thank you, that was very helpful
good
You are using calcium carbonate (not calcium chloride) to prepare carbon dioxide
Well spotted! I didnt realise I had said that. I will find a way to add that in.
Yes that’s right- well spotted!
Really helped me
Thank you !!!
nice video
Thanks
I got a question when he was testing for co2 gas he said that marble chips are calcium chloride. How’s that? I think marble chips are calcium carbonate not calcium chloride. Isn’t that correct?
It’s calcium carbonate
we are encouraged to say "a white precipitate forms" rather than "the limewater turns milky/cloudy"
Great
So helpful
Glad you think so!
Thankyou ❤️
👌
ohh thats cool❤
Thank you🤩
2:27 won’t it be calcium carbonate and not calcium chloride as calcium chloride + hcl doesn’t produce CO2
You are absolutely correct! Slip of the tongue when making the video.
it's perfect
Marble is not Calcium Chloride but calcium carbonate
Well spotted. I didn’t realise I had said that when posting the video. I will try to get something to pop up to correct it.
How do I test for something I already what it is? It already has label. To be authentic it shouldn’t be know
Sir I am confused while you testing for hydrogen what you have added Dil or concentrated HCl I think it is concHcl due to fumes am I right
Hi Obla, I used HCl. The more concentrated the acid the quicker the reaction (hydrogen gets produced faster), the more dilute the acid the slower the reaction (hydrogen gets produced slower).
I have a question. What colour does the litmus paper turn when you add ammonia?
It turns damp red litmus paper or damp universal indicator paper blue.
the last thing you forgot is to bubble the gas produced through limewater which turns cloudy as a positive result
He did say that tho..?
epic gamer
Can i use concentrated acids for getting better results?
Higher concentration will result in a faster rate of reaction.
👍
cooll
🙂🔪
nice
lmao
Nice but it's not calcium chloride, it's calcium carbonate that produces carbon dioxide with hydrochloric acid. U can't edit the UA-cam video, so I suggest u comment it and pin it. Or pin mine 🙂
Hi yes it was a slip of the tongue as I was recording. I added a card at the top of the video but I think some viewers don’t get the card. Thanks for flagging.
@@ScienceRevisionChannel Hahaha no worries it happens. Thanks for the content
Anyone here from C8y/sc2 not going to say the school name
Who came here for a school project