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What three parts of the Bunsen burner should be checked before the gas is opened?
Wiki User
∙ 12y ago
i am not sure can someone else answer this please
Wiki User
∙ 12y ago
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What is the colour of a half-opened Bunsen burner?
Orange??
When Bunsen burner strike back why is the collar so hot?
strike back occurs when the air hole is opened to big or fully opened hence too much air enters and burns causing a strike back and the collar would be the hottest part of the burner during strike back
How do you light a Bunsen burner?
You need to close the hole and plug it into the gas point then light the match and then turn on the gas, to make the flame hotter open the hole.Note: do NOT light the Bunsen burner next to flammable substance
What happened to the flame when you slowly opened the air holes?
As more air enters the Bunsen Burner, the flame turns from a flickering (wax candle effect) yellow to a fierce sounding blue, much hotter, flame.
How do i control the height of the burner flame?
You can make the flame hotter by first, lowering the flame from the starting point by slowly closing the gas valve until the flame is at a medium height. Then, you should increase the oxygen intake by slowly opening the oxygen valve until you have a completely non-luminous flame (an all-blue flame), which is hotter than an orange or yellow flame.
What happens when a Bunsen burner air hole is half open?
When the air hole is opened completely then the flame would turn blue indicating it is very hot. If you closed it the flame will be yellow indicating that it is not as hot (also called the safety flame). So if you half opened the hole then the flame would be hot but not as hot as the blue flame, due to the air flow mixing with the gas inside.
What is the 3 important safety rules when using a Bunsen Burner?
There are a number of safety rules to keep in mind when using a Bunsen burner. The most common in a class room are:Check the rubber tubing for any cracks or tears to be sure no gas escapes.Check the gas valve screw on the bottom to be sure it does not fall out.Be sure the air valve is just slightly opened to allow enough oxygen to ignite the gas but not too much that it extinguishes the flame.Light the match prior to turning on the gas so that unlit gas doesn't escape into the air.If the flame is extinguished during the experiment immediately shut the gas valve off.
When evaporating dish is held over the flame ( air holes are closed )?
I assume the air holes are on a bunsen burner? In which case, when the air hole is closed the flame glows yellow, is less hot, and is more like the flame on a wax candle. When the air hole is opened, air is drawn in and the flame burns blue and produces a fiercer heat.
What causes the Bunsen burner sometimes have a blue flame and sometimes an orange flame?
The blue flame is observable when complete combustion occurs, which is when the air valve is opened enough to allow the ideal amount of oxygen. The orange flame is due to the burning of carbon particles (soot) caused by incomplete combustion, which is an effect of too little oxygen available for the reaction.
What needs to be open to make the flame blue on a Bunsen burner?
In order to have a proper blue flame the air valve must be opened enough to allow enough oxygen to enter during the combustion process. Be aware that too much oxygen will not allow the gas to ignite and too little oxygen is noticed by a yellow flame caused by incomplete combustion and the burning of carbon.
In luminous flame the flame is produce when the air hole is open or close?
A bunsen burner (as used in a science lab or science classroom) will burn quietly, and a flickery yellow (like a wax candle) if the air hole is closed, or closed too much. If the air holes is opened, the flame will turn bluish and become noisy and hotter as more air mixes with the gas.
How does the number of carbon atoms affect the degree of luminosity of the flame produced?
luminous flame is the flame when you have not opened the air hole of your Bunsen burner. it moves around a lot. it looks a bit like the flame you find on candles. only it's a lot bigger. non-luminous flame is the flame when you have opened the air holes of your Bunsen burner. it's really steady, coloured blue only with no orange around it. sometimes though, you'll see small orange flames going up and disappears. ---------------------------------------------- Luminous: emitting light A luminous flame is created from an exothermic reaction (normally oxidisation) between that also emits visible light (EM radiation of wavelength 390[violet light]-750nm[red light]). A non-luminous flame is one that doesn't (EM radiation of wavelength<390nm but >750nm) Basically, if a reaction is making lots of heat (your normal, yellow Bunsen burner flame is at about 700^C) and you can see it, it's luminous. If you can't see it (and the heat is there) then it's non-luminous) [The yellow Bunsen burner flame is from the oxidisation of carbon molecules left over from the methane-oxygen reaction. The blue one is too, it's just happening faster so the wavelength decreases - ask your local physics teacher or put 100nm into Wikipedia search]
