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Why should you avoid moving the beaker while the chromatogram is being developed?
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Should we measure the mass of a beaker before measuring a chemical or powder inside the beaker?
You can do that or you can zero balance the scale with the empty beaker on it before adding the substance to be measured to the beaker.
Where should a beaker be placed with respect to the flame for the most efficient heating on Bunsen burner?
The most efficient, and safe, place for a beaker to be heated is above the flame. Have the beaker held up by the proper metal stand and have it held so that the flame is grazing the bottom of the beaker. Be careful though, the flame should only graze the bottom of the beaker so that the chemical doesn't heat up too quickly.
Why beaker used to collect solution should be dry?
Beakers that will be used to collect solutions should be completely dry before use due the possibility of water being able to dilute the solution that will be placed inside of the beaker. If a beaker is not completely dry before collection of a solution, an inacurracy in data results may occur.
What should be added to a beaker half filled with water to raise it's water level?
stones :)
Can a beaker measure kilograms?
Generally, a beaker (a glass jar) is used to measure volume (litres, gallons, pints, etc), not mass (kilograms, pounds, stone, etc). However, if you know the volume and density of the material in the beaker, you should be able to calculate its mass in kilograms. Density = Mass/Volume (mass over volume)
Why should you not touch chromatogram paper with your hands?
it is because sweat and other substances especially colored ones may be present there. so it is best not to touch chromatogram papers to aviod contaminating it and getting erroneous results..:) chem.student..:)
What of these items should be used to remove a hot beaker from a flame?
beaker tongs :)
Kate and Janie are about to pour water into a beaker when they notice the beaker has a crack at the bottom. What should the students do with the beaker?
Inform their teacher and then throw the beaker in the broken glass
Should we measure the mass of a beaker before measuring a chemical or powder inside the beaker?
You can do that or you can zero balance the scale with the empty beaker on it before adding the substance to be measured to the beaker.
Should you drink out of a beaker why or why not?
Of course not! A beaker is used to mix and measure chemicals. You do not know what chemicals have been in that beaker and many are poisonous or very harmful.
What should you do if a beaker breaks?
Tell the teacher.
Where should a thermometer be placed in a beaker?
Hold it by the top or use a clamp. But make sure before you take the temperature you stir the liquid around in the beaker first and that you do not let it touch the bottom of the beaker as the glass will be hotter than your liquid.
What would happen to a marble if dropped into an empty container like a beaker while the person dropping it was in motion?
The marble will have the motion of the person who dropped it (I assume you mean by 'dropped' that it is not thrown by the person, just dropped), whilst I assume the beaker is stationary. I also assume the person is moving horizontally and the beaker is upright. Therefore the marble will arrive in the beaker with some sideways velocity and will strike the side of the beaker with a horizontal component of velocity as well as a vertical component. I should think it will spin round the beaker a few times before coming to rest, it might even bounce right out. You can't predict this exactly without some more information.
How much does a 150 ml beaker weigh in grams?
How much a beaker weighs depends on the size of the beaker and the thickness of the glass. A small beaker might weigh a few ounces while a large beaker will weigh several times that.
Where should a beaker be placed with respect to the flame for the most efficient heating on Bunsen burner?
The most efficient, and safe, place for a beaker to be heated is above the flame. Have the beaker held up by the proper metal stand and have it held so that the flame is grazing the bottom of the beaker. Be careful though, the flame should only graze the bottom of the beaker so that the chemical doesn't heat up too quickly.
What should students do if a beaker is cracked?
they should immediatly tell the teacher and listen to her instructions
Why was it important not to let the thermometer rest on the bottom of the breaker?
to get an accurate reading of the liquid inside the beaker, the thermometer should not rest on the bottom of the beaker.
