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Why is it that when the air hole is closed the flame becomes yellow?
because the hole is closed, less oxygen is getting to the flame and therefore the flame cools down and is safe.
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 the color of flame when opening air holes?
please answer this question
What is the colour of the flame when sulphur burns in air?
blue
What is the safest flame on a Bunsen burner?
when you light up the burner you should see that the Bunsen burners air hole is closed that is the safest flame
What do you call a flame on a Bunsen burner when the air hole is half open?
air hole closed- flame is the standard yellow-orange color air hole half open- flame is a violet-blue color air hole open- roaring blue flame
What are the characteristics of the luminous Bunsen flame?
A luminous flame is blue and is air/oxygen rich and occurs when the Bunsen vent is open. A non-luminous falme is very yellow and smoky and is fuel rich. It occurs when the Bunsen vent is closed.
What flame is what you called when air holes are closed?
Safety flame
Does a Bunsen burner make a noise when the air hole is closed?
Air hole open=steadyAir hole closed= not steady.Why?Lack of oxygen makes the flame unsteady when the hole is closed as oxygen is used for burning.
Why is it that when the air hole is closed the flame becomes yellow?
because the hole is closed, less oxygen is getting to the flame and therefore the flame cools down and is safe.
Why is a luminous flame formed when the air hole is closed?
The luminous flame is present when the air valve is closed because of an incomplete combustion process and the burning of trapped carbon (soot).
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.
Why is it safer to close the air holes to obtain a luminous flame?
When the air hole on a Bunsen burner is closed, air is excluded, so the flame becomes a yellowish candle-like flame.
What happens to the temperature of the flame when the air hole is opened?
When the air hole is completely open, the flame is the hottest it can be. The fame turns blue. When the air hole is closed, the flame is yellow and its temperature is cooler.
When the air hole is half open what is the flame called?
Green flame cuz when the air hole is closed it is yellow and when it is open it is blue so when the colors are combined they make the green flame
Why is it that when the air hole is closed the flame became yellow?
The flame becomes yellow because the presence of carbon particles formed by incomplete combustion due to a lack of oxygen caused by the closed air valve.
Is the air hole opened for a roaring flame?
A roaring flame indicates that the air inlet is open too far and should be closed slightly.
