Sodium flames are generally bigger in size . u will see long wavering tail like flames ... Barium has a slight greenish hue to the yellow... but when u have a mix of minerals flame test is shit... very outdated..
For those asking why cotton swab instead of platinum (or nichrome) wire, and those asking why H2O instead of HCl: Cotton swabs are cheaper than platinum wire. You use HCl to clean the platinum wire so that it is not contaminated, but in this case, because he throws away every used cotton swab, there is no need to clean it. The water is for wetting the cotton so that the salt sticks onto the swab.
The salt expresses those colours because of their electrons, which get excited when they meet higher temperature, meaning they will "jump" from their ground state and come back, and when they do, they exhibit the visible colours.
one question when doing this test. can we use both sides of the cotton bud or should we only use one side of the bud. pls answer as soon as possible. pls. thank you f or this video.loved it and leaned a lot from it
Is it possible by chemical means that the matchstick should ignite at the same time as any chemical that is about an inch or 5 inches away from the matchstick?
Can someone tell me why it only works on metals and cations and not nonmetals/anions? I'm working on a science project and I don't really understand this part. Thanks
Anyone else watching because your school did this too and it was really relaxing? Lol 20 years later and I still remembered what color they were all going to turn
Errrrg! Both unknowns look like sodium! Probably my laptop. I did note that sample #1 appeared to burn brighter than #2, which I also noticed with the sodium/barium flames. Barium seems to emit less visible color as well. Would be interested to see the flames' ultra and infra signatures. With neon (actually referring to just one color) signs, colors are due to gases of the same elements we watched burn in the video, sealed in glass tubes, with embedded wire electrodes. What I cannot find is the type of wire used. Would some metals react differently to the trapped gas? Do specific metals work best with certain gases, or am I over-analyzing? Colors near the violet spectrum, seem dim to my naked eyes. When I look at neon signs, greens and blues tend to do the same thing. If the sign is heavy on yellow-to-reds, the greens and blues seem to recede. I know there are more colors than most humans can discern. I'd love to view neon tubes' infra-ultra spectrums. How do such colors appear to others in this forum? I presume color-blindness would make them look quite different, but how about those with wider spectrums than mine? Do we all see colors the same way? Thank you.
Hi, thanks for this video! Just to clarify, how do we know that the flame colour is caused by the metallic element in the compound and not the chloride?
We can assume since each chemical is producing a different color and each chemical has a different metal (but the same nonmetal) that it is the metal causing the change in color.
I liked the process, however, your burner got contaminated and emitted a purple color on the outer range of the flame, instead of the clear blue that was at the beginning, and calcium and barium showed no difference, so this difficult the identification of the unknown, though by similar reactions and not color, I go for Na and Ca.
Because of E^+ present in metals goes to excited level and they don't remains there longer and come back to normal level and doing this E^+ comes in visible region and color is observed. For example : Ba^2+ Shows apple green color, Sr^2+ Stable red and Ca^2+ gives Crimson red color.
Aayushman Singh yes but there is probably sodium somewhere in the mix either from the q-tip, the water, or even the soap used to clean the flask. A small amount of sodium can over power most colors which is why open flames are usually yellow. So to get the Green color you must look at the flam through colbalt glass. The Glass absorbs the yellow color and leaves a green color.
That burner is insanely dangerous !! There is no gas-flow control as far as I can see so gas starts flowing as soon as the jet is opened "1/4 of a turn"!!' I always teach my students to FIRST bring a burning match/lighter to the burner, then gently open the gaslfow-control knob.
When I burn strontium, the flame is red (using a metal tip of stainless steel, and dilute HCl solution). I make my 'swabs' from a short piece of wood, then hammer a thin steel nail into the end of it, cut the head off with a pliers, and if neccessarry I'll sharpen the tip. Then I coat the wood with aluminium foil. Makes for a nice little tool. Remember to heat the steel tip in the bunsen flame for a while, to get rid of excess iron ions. Many years ago, I used solid metal salts, dipping in water, like in this video, but this tends to be 'overkill' for the students, as salts melt and drip into the burner flame. Since we here in Norway use burners with a tank, not bunsen, that is very annoying for me as a teacher, as I have to clean the burner heads after class. So instead I now prepare dilute HCL solutions of the salts, and just dip the tip of my tool in them. These solutions do not have to be very concentrated, and I can adjust the concentration during preparation to get clear colors in the burner flame. This also makes for at better guessing games when trying to determine an unknown salt, as most of the solutions become colorless at low concentrations (maybe not cupper chloride, but it is not easy to camoflage that color anyhow, and that one should maybe be memorized through multiple choice / open question in stead of flame test comparishon). I prepare the salt solutions in regular heat resistant (borocilicate) test tubes, and can then ask the students to pour a little from each of these into their own porcelain palettes, like these ones from aliexpress: www.aliexpress.com/item/32857062305.html Also, for those interested in this topic, buring iron oxide adds a little bit of 'spark' to the equation, and is always fun to use. If I have some time on my hands, I'll post a link to how I do this. Stay tuned. I'll try it out tomorrow, but have a busy schedule.
May someone please explain to me the significance of doing flame tests (like what is its purpose)? I'm doing a science project on this and I found this topic quite interesting, but quantum chemistry (I think that's what it is) is a whole knew lesson that I need to learn. May someone also explain how you can identify an unknown metal-salt just by the color of the flame? Because there are a number of different metals that give off the same color (or hard to distinguish shades of that color)
+HeyItzCho Great questions! The first thing to remember is that light is a form of electromagnetic energy. All electromagnetic energy has it's own frequency. Scientists use a spectrometer when doing flame test in order to record the electromagnetic frequency. For example, red light has a frequency of 400-484 THz. Even if two metals give off red light, the frequency would be different.
+Renee Kata so what you're saying is that each metal salt has different electron-energy levels??? And does the color of the flame that is being emitted determine the temperature as well?
+Renee Kata sorry its just that I'm new to quantum chemistry and if you have any specific sources that you would like to share then please do that would really help! But thank you for replying to my comment :)
No problem! Yes, each element has a different emission spectrum due to the electron energy level. Temperature does not affect the color. This website has a great deal of information on emission spectra: chemwiki.ucdavis.edu/Physical_Chemistry/Quantum_Mechanics/09._The_Hydrogen_Atom/Atomic_Theory/Electrons_in_Atoms/Atomic_Spectra
You use HCl to clean the platinum wire so that it is not contaminated, but in this case, because he throws away every used cotton swab, there is no need to clean it. The water is for wetting the cotton so that the salt sticks onto the swab.
I think.......he might be using chloride salts.... because chloride salts are volatile in nature and imparts a characteristic colour to the flame....and for water...its used to make the salt stick with it.... Generally rather always con HCl is used if the anion of the salt is not chloride
![ช่วยพาฉันผ่านเวลา - วสันต์17 [Official MV]](http://i.ytimg.com/vi/HFnntWoqc54/mqdefault.jpg)
When your lab turns into watching a video of someone else doing it because of coronavirus
relatable
still paid for lab fees tho :):):):)
Brenna Hasselmann oof
@@brennahasselmann8075 Thats money that we will never get back.
same
Purple flame: 3:15
Green flame: 4:08
Wild Orange flame: 4:43
Lemon Yellow flame: 5:19
Light Orange flame: 5:49
Orange flame: 6:17
Pink flame: 6:46
Wild Yellow flame with white core: 7:17
Light Orange flame with White core: 7:47
Thanks
@@mayankshukla3912 You're welcome ^^
thank u
@@bloomyshotzz9193 You're welcome! ^w^
thank you. I recorded the first one as orange. I have hard time seeing colors
Unknown1: Sodium, Na+
Unknown2: Barium, Ba++
SIBASISH DEB your a god!
Wow now I don't have to do the this test that my chemistry teacher gave me thank u so much ma dude
Thank you! But how did you know the difference of Barium and Sodium Flame?
Sodium flames are generally bigger in size . u will see long wavering tail like flames ... Barium has a slight greenish hue to the yellow... but when u have a mix of minerals flame test is shit... very outdated..
this saved me, thank you so much!
When the video is suddenly relevant 8 years later because of a *pandemic*
For those asking why cotton swab instead of platinum (or nichrome) wire, and those asking why H2O instead of HCl:
Cotton swabs are cheaper than platinum wire.
You use HCl to clean the platinum wire so that it is not contaminated, but in this case, because he throws away every used cotton swab, there is no need to clean it.
The water is for wetting the cotton so that the salt sticks onto the swab.
NukeML thanks alot buddy
yeah i also wondere why he did not use the platinum/nichrome and also HCl. suprisingly the colours were visible
yup
Thank youu
if he doesnt use pure water, the flame colouration wont be completely accurate....right??? I saw the flame colouration of barium then i guessed that.
who watch this during lockdown? (in chem class) :)
me lol
I
More like in chem class
Me
Me
him: "dont ask mr.hummer what color is that flame that is for you to deside"
me: "im colorblind >_
i just realized i should give my friend a call is probably losing his marbles
same
Had to get help from my friend too
Am I the only one that's hearing in the background the song from Taylor Swift of Never Ever Getting Back Together
My heart was in my ass for a quick second cuz I thought it was my phone that played it
Why I can't hear it
oh thank good hahaha i was startin to panic XD
it also ended with Ways to Say Good Bye
@@augustlareyy I was so confused too! lol.
Love watching labs instead of doing them bc school’s shut down
It's so fascinating! Thank you!
The salt expresses those colours because of their electrons, which get excited when they meet higher temperature, meaning they will "jump" from their ground state and come back, and when they do, they exhibit the visible colours.
Thanks for this simple explanation!
ouu yes
one question
when doing this test. can we use both sides of the cotton bud or should we only use one side of the bud.
pls answer as soon as possible. pls. thank you f or this video.loved it and leaned a lot from it
Is it possible by chemical means that the matchstick should ignite at the same time as any chemical that is about an inch or 5 inches away from the matchstick?
Can someone tell me why it only works on metals and cations and not nonmetals/anions? I'm working on a science project and I don't really understand this part. Thanks
First unknown Na and Second is Ba
carefully hes a hero
@@prequelanimations539 Sibasish Deb did it first
Anyone else watching because your school did this too and it was really relaxing? Lol 20 years later and I still remembered what color they were all going to turn
am i the only person who finds his voice relaxing?
thanks ihave a test tomorrow in flame test
Errrrg! Both unknowns look like sodium! Probably my laptop. I did note that sample #1 appeared to burn brighter than #2, which I also noticed with the sodium/barium flames. Barium seems to emit less visible color as well. Would be interested to see the flames' ultra and infra signatures.
With neon (actually referring to just one color) signs, colors are due to gases of the same elements we watched burn in the video, sealed in glass tubes, with embedded wire electrodes. What I cannot find is the type of wire used. Would some metals react differently to the trapped gas? Do specific metals work best with certain gases, or am I over-analyzing?
Colors near the violet spectrum, seem dim to my naked eyes. When I look at neon signs, greens and blues tend to do the same thing. If the sign is heavy on yellow-to-reds, the greens and blues seem to recede. I know there are more colors than most humans can discern. I'd love to view neon tubes' infra-ultra spectrums.
How do such colors appear to others in this forum? I presume color-blindness would make them look quite different, but how about those with wider spectrums than mine? Do we all see colors the same way?
Thank you.
What happened when we do this test with 3 positive and 3 Negative radicals(Mixture)??
This looked so cool
Hi, thanks for this video! Just to clarify, how do we know that the flame colour is caused by the metallic element in the compound and not the chloride?
We can assume since each chemical is producing a different color and each chemical has a different metal (but the same nonmetal) that it is the metal causing the change in color.
Actually it is the colour of respective metal chloride
Yoo the taylor swift in the background tho. Professor out here jamming lol
1- Na+
2-Ba+2
How you are using Distilled water rather than concentrated HCl, and where is platinum wire
Tysm for this helpful vid
It was very helpful. Thanks
Barium should be GREEN! I think you contaminated your sample with carbohydrates! (i.e. alcohol and cotton)
I wonder if can we use a lighter instead of flame burner?
What is the cotton swab tied around?
what are the following salts that he said? i didn't hear the 2 salts after saying the "And Also Were Going To Use The Following Salts"?
that's because the 2 salts are unkonwn and for us to find out
5th Period Chemistry gang
How come you used cotton buds instead of nichrome or platium :/
I liked the process, however, your burner got contaminated and emitted a purple color on the outer range of the flame, instead of the clear blue that was at the beginning, and calcium and barium showed no difference, so this difficult the identification of the unknown, though by similar reactions and not color, I go for Na and Ca.
unknown 1 - Na, unknown 2 - Ba
Ba is Barium chloride, I'm pretty sure
THANK YOU SMMMM. BROOO OMG THANK YOU SMMM
you should take the lab sheet closer so we can see
Unknown no 1 is Sodium salt & Unknown no 2 is Barium salt
Are there all salts of chloride? i.e. why you didn't use Hcl right?
hcl is not a salt, its an acid
if we burn acid then what happen
They are calcium chloride or sodium chloride and Barium Chloride.
Thank you
IF SAMPLE IS WHOLLY MADE OF PAPER, IS IT NECESSARY TO CONDUCT A TEST FOR FLAMMABILITY?
Right lmaoo
Surprised u didn't get copyright for the background music
Unknown 1 Na
Unknown 2 Ba
Thanks for the video. Very useful
Thanks
Very very thanks to you
*shows unknnown 1*
me: its sodium this is so ezzzz im gonna pog the test
*shows unknown 2*
me: uncanny noises
no ash test???
Thanks
What is the test for NH4+
Flames with different colors ar amazing +_+
i just wanted to know what is the hotest color flame . can you tell me and it temperature
1 Sodium but not sure about the second unknown. help please
can anyone list down the color's of the elements ?
Purple flame: 3:15
Green flame: 4:08
Wild Orange flame: 4:43
Lemon Yellow flame: 5:19
Light Orange flame: 5:49
Orange flame: 6:17
Pink flame: 6:46
Wild Yellow flame with white core: 7:17
Light Orange flame with White core: 7:47
arent you supposed to use nichrome wire
That can work too.
Flame test for barium was seemed to be wrong
It should come out apple green instead it come yellowish...
shouldnt barium be green
Thank you this was great. I love science, definitely chemistry. It is my dream to do that
u need better dreams
What does he mean class?
why are you using cotton ...... for burning.....
is it good for the Exp?????
pls respond me fast...
yes it is that fast
No it isn't
What's the difference between the color of barium ions and and copper (I) ions ????
I like the video... can you post the lab paper?
First unknown is hella obviously sodium and the second one I had to guess barium and it seems like that's right from the comments xD
unknown 1 is Sodium,,,2 is barium
I was buy 99,9% clean KCl but the flame test show orange flame colore , its indicate to me NaCl. Am I right?! Is that any other way to determine KCl?!
Why do their color change?
Because of E^+ present in metals goes to excited level and they don't remains there longer and come back to normal level and doing this E^+ comes in visible region and color is observed. For example : Ba^2+ Shows apple green color, Sr^2+ Stable red and Ca^2+ gives Crimson red color.
very cool
Unknown 1 is sodium ,unk2 is barium
Shouldn't barium show applegreen colour flame??
Aayushman Singh yes but there is probably sodium somewhere in the mix either from the q-tip, the water, or even the soap used to clean the flask. A small amount of sodium can over power most colors which is why open flames are usually yellow. So to get the Green color you must look at the flam through colbalt glass. The Glass absorbs the yellow color and leaves a green color.
+Aayushman Singh I think it's because he used water instead of conc.HCl . That seems to be the only thing he did different.
+stuebylover But he took a new q-tip for each salt didn't he ?
it dosent matter sodium is everywhere and almost impossible to completely get rid of
stuebylover but he got the right colors for other salts.
anyone watching this from lockdown? :,)
Why is the cu salt green???
It could be either cuco3 or cu(oh)2. Cu(oh)2 because when it is oxidised it turns green
There are exceptions
This is my experiment to do but since dont have all the things i just watch in YT
1.Sodium
2. Barium
Barium gives apple-green colour
Who watch this because you miss the video in online class ?
Wow great video keep it dank memes
i miss u obama :c
what kind of tutorial is this? he is not telling us the kind of colour that is?
Color is perception
What easily differentiate Li salt an Sr salt in the flame
Unknown number 1 is sodium, while Unknown number 2 is barium
Unknown number 2 produced an orange-yellow flame. Barium produces a green flame...
1.sodium
2.barium
Purple for lilac colour
y'all have to do this to
That burner is insanely dangerous !! There is no gas-flow control as far as I can see so gas starts flowing as soon as the jet is opened "1/4 of a turn"!!'
I always teach my students to FIRST bring a burning match/lighter to the burner, then gently open the gaslfow-control knob.
Hi can you tell me where i can buy Li salt tnx
Mexico
mexico}
just moisten the tip
lmaooooo
when u realise all countries have same syllabus with same difficulty level
we all r same ppl
Sir unknown one is Sodium salt
sir please intimate the process of dod
When I burn strontium, the flame is red (using a metal tip of stainless steel, and dilute HCl solution).
I make my 'swabs' from a short piece of wood, then hammer a thin steel nail into the end of it, cut the head off with a pliers, and if neccessarry I'll sharpen the tip. Then I coat the wood with aluminium foil. Makes for a nice little tool. Remember to heat the steel tip in the bunsen flame for a while, to get rid of excess iron ions.
Many years ago, I used solid metal salts, dipping in water, like in this video, but this tends to be 'overkill' for the students, as salts melt and drip into the burner flame. Since we here in Norway use burners with a tank, not bunsen, that is very annoying for me as a teacher, as I have to clean the burner heads after class. So instead I now prepare dilute HCL solutions of the salts, and just dip the tip of my tool in them. These solutions do not have to be very concentrated, and I can adjust the concentration during preparation to get clear colors in the burner flame.
This also makes for at better guessing games when trying to determine an unknown salt, as most of the solutions become colorless at low concentrations (maybe not cupper chloride, but it is not easy to camoflage that color anyhow, and that one should maybe be memorized through multiple choice / open question in stead of flame test comparishon).
I prepare the salt solutions in regular heat resistant (borocilicate) test tubes, and can then ask the students to pour a little from each of these into their own porcelain palettes, like these ones from aliexpress: www.aliexpress.com/item/32857062305.html
Also, for those interested in this topic, buring iron oxide adds a little bit of 'spark' to the equation, and is always fun to use.
If I have some time on my hands, I'll post a link to how I do this. Stay tuned. I'll try it out tomorrow, but have a busy schedule.
Iam watching this because our chemistry teacher told us to watch
BARIUM SALT SHOULD BE YELLOW WISH GREEN WHY DIDNT COME THAT COLOUR
who is here from Mr.Lamarr's class
May someone please explain to me the significance of doing flame tests (like what is its purpose)? I'm doing a science project on this and I found this topic quite interesting, but quantum chemistry (I think that's what it is) is a whole knew lesson that I need to learn. May someone also explain how you can identify an unknown metal-salt just by the color of the flame? Because there are a number of different metals that give off the same color (or hard to distinguish shades of that color)
+HeyItzCho Great questions! The first thing to remember is that light is a form of electromagnetic energy. All electromagnetic energy has it's own frequency. Scientists use a spectrometer when doing flame test in order to record the electromagnetic frequency. For example, red light has a frequency of 400-484 THz. Even if two metals give off red light, the frequency would be different.
+Renee Kata so what you're saying is that each metal salt has different electron-energy levels??? And does the color of the flame that is being emitted determine the temperature as well?
+Renee Kata sorry its just that I'm new to quantum chemistry and if you have any specific sources that you would like to share then please do that would really help! But thank you for replying to my comment :)
No problem! Yes, each element has a different emission spectrum due to the electron energy level. Temperature does not affect the color.
This website has a great deal of information on emission spectra: chemwiki.ucdavis.edu/Physical_Chemistry/Quantum_Mechanics/09._The_Hydrogen_Atom/Atomic_Theory/Electrons_in_Atoms/Atomic_Spectra
+Renee Kata Thank you so much!!! This website will definitely aid me into actually understanding my science project :D
No one:
Chrome:
Rainbowbridguu!!!!!!!
1 sodium2 barium
Yellow for golden yellow
instead of HCL why did u use water?????
+Rishav Panda Yeah . We are always asked to use conc.HCL. But he's using water. Maybe any protic solvent would do.
You use HCl to clean the platinum wire so that it is not contaminated, but in this case, because he throws away every used cotton swab, there is no need to clean it.
The water is for wetting the cotton so that the salt sticks onto the swab.
I think.......he might be using chloride salts.... because chloride salts are volatile in nature and imparts a characteristic colour to the flame....and for water...its used to make the salt stick with it.... Generally rather always con HCl is used if the anion of the salt is not chloride
Please do reply friends....
my teacher showed me this video in class
wassup mrs dornbusch's class
6:28 ca should emit org red light !!
Red for brick red
Sodium and bariuml