Phenols burn with a smoky flame because of incomplete combustion. The smoky flame results from the presence of soot and unburned carbon particles in the flame. This is often due to insufficient oxygen supply during the combustion process.
When a wooden splint is placed in the outer part of the Bunsen flame, it burns with a smoky flame due to incomplete combustion. When placed in the inner blue cone of the flame, it burns with a clean, non-smoky flame due to complete combustion of the wood. The inner blue cone is the hottest part of the flame, which allows for more efficient burning.
Burn hydrogen
Helium does not burn in a flame test because it is an inert gas and does not react with the flame to produce a characteristic color.
NaCl will burn with a brick-red colour in a non-luminous Bunsen flame.
Burn slowly with smoke but no flame.
Unsaturated hydrocarbons burn wih a luminous smoky flame. (unsaturated hydrocarbons are simply carbons with multiple bonds. they are known as unsaturated because they do not have the maximum amount of hydrogens attached as possible with the amount of given carbons.)
A smoky flame is a flame that produces a significant amount of smoke due to incomplete combustion of the fuel. It is typically yellow or orange in color and can be caused by insufficient oxygen, improper fuel-air mixture, or poor ventilation. A smoky flame may indicate that adjustments are needed to improve combustion efficiency and reduce pollution.
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For a flame to burn it needs fuel, oxygen, and heat.
A smoky burner flame that separates from the tip of the burner is typically caused by an incorrect air-to-fuel ratio. This can be due to a clogged burner or inadequate airflow. It can also be caused by a lack of proper maintenance or adjustment of the burner.
Saturated hydrocarbons sometimes burn with smoky flame upon combustion while unsaturated hydrocarbons always burn with non-smoky or blue flame. This is on account of the reason that for the same number of carbon atoms in their molecular formula, saturated hydrocarbons have more number of hydrogen atoms as compared to unsaturated hydrocarbons.
flame retardant
flame retardant
When a wooden splint is placed in the outer part of the Bunsen flame, it burns with a smoky flame due to incomplete combustion. When placed in the inner blue cone of the flame, it burns with a clean, non-smoky flame due to complete combustion of the wood. The inner blue cone is the hottest part of the flame, which allows for more efficient burning.
A word that means to burn with sudden flame is flare. The homophone for flare is flair. Sear can also mean to burn with a sudden flame, and its homophone is sere.
When charred over an open flame, food can develop a smoky and slightly bitter flavor.
A yellow, smoky flame with a flickering appearance typically produces more soot and smoke compared to a clean, blue flame. This is due to incomplete combustion, which occurs when there isn't enough oxygen present to fully burn the fuel. It's important to ensure proper ventilation and adjust the air-to-fuel ratio to minimize the production of soot and smoke.