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Why do you pass back and forth in the flame while heating the liquid?
Wiki User
∙ 12y ago
That is to allow even heat distribution. If the object being heated in a flame is held in one position, a "hot spot" will occur and the liquid may start to boil at that spot.
Wiki User
∙ 12y ago
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What instrument would be suitable for holding for a liquid while heating it over a flame?
metal tongsAnswermetal tongs Answermetal tongs
Is heating liquid honey a change of state?
No. Simply heating honey, while making it less viscus, does not change its state. It remains a liquid. Unless heating is prolonged enough to cause evaporation, the honey will remain a liquid, so no change of state occurs by simply heating.
What items is used to distribute heat from a Bunsen burner when heating the bottom of a crucible?
A crucible is placed in a pipestem triangle placed on an iron ring while being heated. This supports the crucible while allowing the bottom of the crucible to be directly exposed to the flame of the Bunsen burner. There is no item that is used to distribute heat from a Bunsen burner when heating the bottom of a crucible. The bottom of the crucible is intended to be exposed to the direct flame of the Bunsen burner.
What is the advantage of using evaporation by water bath over direct heating method?
The advantage of using evaporation by water bath over a direct heating method is when heating directly, for example, with a Bunsen flame - the substance in the boling tube may decompose upon such an accelerated heating because of variations in the intensity of the flame and then may be scorched, while a water bath provides a constant heating of the subsatnce by distributing heat to the boiling tube equally throughout, so that the substance cautiously gets heated until a fixed point (be it the melting point or boiling point) is reached.
Is the inner part of a luminous flame yellow?
The inner part of a flame burns blue while the outer part of the flame burns yellow.
What instrument would be suitable for holding for a liquid while heating it over a flame?
metal tongsAnswermetal tongs Answermetal tongs
Is heating liquid honey a change of state?
No. Simply heating honey, while making it less viscus, does not change its state. It remains a liquid. Unless heating is prolonged enough to cause evaporation, the honey will remain a liquid, so no change of state occurs by simply heating.
Consistent temperature can be achieved while heating a test tube by doing what?
Consistent temperature can be achieved by heating a test tube while moving the test tube all around the flame. Do not let only one part of the test tube rest on a flame but instead, keep moving the test tube slowly.
Why don't wood melt on heating?
wood doesn't melt on heating because while heating the compound required to change that substance into liquid gets evaporated quickly when we start heating.
Why is it important to stir the beaker while the water is heated?
So that the temperature of the liquid is at a constant measurement
Should a luminous or non luminous Bunsen flame be used for heating in the laboratory and why?
Non-luminous flame should be used for heating in the laboratory because the flame is steady and produce little or no soot.Non-luminous flame is very hot thus, it is recommendable to use for laboratory purposes.Luminous flame is unsteady while non-luminous flame is steady.Another reason of using non-luminous flame because the flame of non-luminous is blue, and not visible unlike the luminous flame which is yellow in colour and visible.
Is non luminous flame steady or unsteady?
Non-luminous flame should be used for heating in the because the flame is steady and produce little or no soot. Non-luminous flame is very hot thus, it is recommen- dable to use for laboratory purposes. Luminous flame is unsteady while non-lumi- nous flame is steady. Another reason of using non-luminous flame because the flame of non-luminous is blue, and not visible unlike the luminous flame which is yellow in colour and visible.
What items is used to distribute heat from a Bunsen burner when heating the bottom of a crucible?
A crucible is placed in a pipestem triangle placed on an iron ring while being heated. This supports the crucible while allowing the bottom of the crucible to be directly exposed to the flame of the Bunsen burner. There is no item that is used to distribute heat from a Bunsen burner when heating the bottom of a crucible. The bottom of the crucible is intended to be exposed to the direct flame of the Bunsen burner.
What is the advantage of using evaporation by water bath over direct heating method?
The advantage of using evaporation by water bath over a direct heating method is when heating directly, for example, with a Bunsen flame - the substance in the boling tube may decompose upon such an accelerated heating because of variations in the intensity of the flame and then may be scorched, while a water bath provides a constant heating of the subsatnce by distributing heat to the boiling tube equally throughout, so that the substance cautiously gets heated until a fixed point (be it the melting point or boiling point) is reached.
Why do you use the blue flame while using a Bunsen burner?
hottest part of flame
What is the voltage of a thermocouple in a pilot flame?
It should be around 20 millivolts while operating in a flame.
How does gas tankless hot water work?
There is a coil of copper tubing that sits in the flame. When you open the hot water faucet, the flame ignites and starts heating the water. The coil is long enough that the water has time to heat while it is in the flame. That's why you can have hot water as long as you want.
