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Why do we heat the test tube in a water bath and not directly over a flame?
Wiki User
∙ 8y ago
so they dont explode Because of the thickness of the glass. Glass that is thin, as in test tubes expand with heat rather quickly and this makes them very fragile. The water bath heats them up slowly.
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoThe water heats the contents of the test tube evenly, while the flame is concentrated to a point, which will cause the contents of the sample to be heated unevenly.
Wiki User
∙ 13y agoTherefore the contents of the test tubes are heated at a constant temperature.
Wiki User
∙ 14y agoThe water bath can safely heat the tube up to 100 °C (212° F) with less risk of overheating or combustion.
Wiki User
∙ 9y agoThe reason is primarily one of safety. It is always better to avoid direct flame if at all possible.
Wiki User
∙ 9y agoThe aim is to avoid uneven heating and breaking glass objects.
Sesethu Mandlana
IN Physics wards:Why do we heat test tube in a water bath and not directly over a flame?
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Is it OK to heat a flammable liquid such as ethanol using water bath over a Bunsen flame?
yes because the liquid isn't actually touching the flame.
How do you heat bath water with a heating element?
with a submersion heater designed for bath tubs..
Is it advisable to heat ethanol directly with a Bunsen flame?
It is not advisable to heat ethanol with a Bunsen flame because of the low boiling point and its volatile nature. Ethanol is also flammable, and therefore it is best to heat ethanol on a heat plate or steam condenser.
When is water bath used for laboratory?
water bath is a bath that has water...
When water is in a pan over a flame why does the water get hot?
The flame heats up the metal pan because metal conducts heat well. Since the water is in the hot pan, it also gets hot.
Why do we heat the tube in a water bath and not directly over a flame?
IN Physics wards:Why do we heat test tube in a water bath and not directly over a flame?
Why do we heat the test tube in a water bath not directly over a flame?
IN Physics wards:Why do we heat test tube in a water bath and not directly over a flame?
Would you heat a mixture of solutions directly on a flame or a water bath?
It depends on the solutions you mixed. If they are non-flammable, heating them on a flame would be fine. If they are flammable, I would use both a water bath and an electric hot plate.
Is it OK to heat a flammable liquid such as ethanol using water bath over a Bunsen flame?
yes because the liquid isn't actually touching the flame.
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.
Can you boil water in a test tube suspended in a pot of water?
For slow heating with the maximum control, test tubes are heated in a water bath rather than in a flame. This can only heat the tube to the boiling point of water, 100°C or 212 °F.
Does boiling water have more heat than a match flame?
Yes, the boiling water has more heat than the match flame.
During distillation of ether why you used water bath for heating?
Because ether is highly volatile liquid and easily catch the fire (combustible) so direct heat on flame is not possible.
How do you heat bath water with a heating element?
with a submersion heater designed for bath tubs..
Is it advisable to heat ethanol directly with a Bunsen flame?
It is not advisable to heat ethanol with a Bunsen flame because of the low boiling point and its volatile nature. Ethanol is also flammable, and therefore it is best to heat ethanol on a heat plate or steam condenser.
What are baking and pasting?
Baking it cooking food with dry heat in an oven so that it is not exposed directly to a flame. Pasting is creating a thick mixture usually consisting of flour and water.
What is the best way to keep pudding from burning?
Lower flame and keep stirring or put preparation pan in another pan of water so it is not directly over the heat source.
