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carbon dioxide
You stated that carbon dioxide and nitrogen are present, but you did not mention oxygen. Nothing burns without oxygen . . . If you expose limewater to carbon dioxide, it will get cloudy, but will not if you expose it to nitrogen.
The reaction between carbon dioxide (CO2) and a burning splint is that the splint will extinguish. This is because CO2 is a non-flammable gas, which lacks oxygen to support combustion. When brought into contact with a burning splint, it displaces the oxygen and prevents the splint from continuing to burn.
It will extinguish the flame, as it replaces the oxygen around the splint, which is an essential component of combustion. The splint may relight if placed in an oxygen rich environment.
it goes out A glowing splint needs oxygen to basically keep glowing. It is a small fire in a way. When the glowing splint is added into an environment full of carbon dioxide, the splint goes out. Carbon dioxide in this case smothers the flame restricting the use of oxygen in combustion thus putting the flame out.
carbon dioxide
Yes.
carbon dioxide
Helium is a group 8 element, and therefore a noble gas. It has no free electrons to bond to oxygen, therefore it won't oxidise or combust. So no, it won't. As a side note, you may hear of stars "burning" helium, but this Ian burning, its nuclear fission :)
You stated that carbon dioxide and nitrogen are present, but you did not mention oxygen. Nothing burns without oxygen . . . If you expose limewater to carbon dioxide, it will get cloudy, but will not if you expose it to nitrogen.
The splint test is to test for the presence of oxygen. You light a small piece of wood (the splint), then blow it out. The end of the wood will still glow. If you put the glowing splint into a test tube with oxygen, it will relight. It you put the glowing splint into a test tube with carbon dioxide, it will stop glowing. A better test for carbon dioxide is to bubble it through a solution of limewater.
the positive test for oxygen is very simple. all that needs to happen is a vile must be filled 1/4 with hydrogen peroxide and a glowing splint must be inserted in t the vile . the splint will reignite after it is inserted int the vile.
The reaction between carbon dioxide (CO2) and a burning splint is that the splint will extinguish. This is because CO2 is a non-flammable gas, which lacks oxygen to support combustion. When brought into contact with a burning splint, it displaces the oxygen and prevents the splint from continuing to burn.
The gas is Oxygen. It burns brighter because Oxygen supports combustion (aka helps other objects to burn).
It will extinguish the flame, as it replaces the oxygen around the splint, which is an essential component of combustion. The splint may relight if placed in an oxygen rich environment.
OXYGEN RELIGHTS A GLOWING SPLINT Oxygen.