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Which is the correct way to hold a test tube whike heating its unknown chemical?
When heating a test tube with any substance in it, you hold it with a test tube holder, pointed away from you and other people.
The bottom of a test tube was covered with soot after an experiment which required heating. What kind of flame was used during the experiment?
A luminous flame
What is most important part of heating a liquid in a test tube?
Heating should be slow.The test tube should not be full.Work in a laboratory hood.
Whats the best method of heating fluid in a test tube is to point the flam directly at the bottom of the tube?
FALSE!!
How should you hold the test-tube during heating?
Sometimes you'd hold it on a retort stand, other times it'd be more practical to hold it with tongs
Heating the liquid in a test tube?
it vapourise from the test tube
What would you use if you were holding and heating a test tube?
When heating a test tube, you would use a test tube holder. It can also be used to hold/ support pipettes, etc. http://www.answers.com/mt/test-tube-holder
Which is the correct way to hold a test tube whike heating its unknown chemical?
When heating a test tube with any substance in it, you hold it with a test tube holder, pointed away from you and other people.
The bottom of a test tube was covered with soot after an experiment which required heating. What kind of flame was used during the experiment?
A luminous flame
In heating chemicals in a test tube where should the mouth of the test tube point?
Away from you....... BULOK eat my dust
When you are heating materials in a test tube what is very important about the mouth of the test tube?
The most important aspect of heating liquids in a test tube is to never look directly into the mouth of the test tube, as liquid may spurt out and come into contact with your eyes or face. However, if you are wearing plastic safety glasses, the substance may not harm you, depending on the type of substance you are heating.
What is most important part of heating a liquid in a test tube?
Heating should be slow.The test tube should not be full.Work in a laboratory hood.
Which is better for heating beaker or a test tubeand why?
A beaker is better for heating compared to a test tube because it does not break up easily.
What is the correct method for heating chemicals in a test tube?
Slowly heating, stir the test tube, the test tube must be max. 50 % filled, avoid very flammable or explosive chemicals, use safety glasses, work in a ventilated fume hood if it is possible.
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.
When heating liquid in a test tube what safety precautions are needed?
Before heating it, you should check the test tube for damage (scratches or cracks), and not use one that isn't perfect. You should also wear safety glasses (to protect your eyes in case the test tube explodes, which happens sometimes, even when heating water). If you are heating something that could react violently, you should use a blast shield (thick piece of clear plastic).
Johnny needs to heat a test tube with chemicalswhat do you suggest that he should do to perform the experimant safely?
When heating test tubes safely in the laboratory:Never leave the test tube stationary in the flame. Move the test tube constantly in and out of the flame.Never point the opening of the test tube towards your face or body; towards a walk way where somebody may walk past; or towards any other person or work station.Point the opening of the test tube along an unoccupied bench area or wall or dead space where nobody walks.You will feel the contents of the test tube heating because the test tube will start to vibrate as the contents heat - take extra care.The bigger the test tube the safer it is. Larger test tubes will be less likely to spray their hot contents out than smaller test tubes.Always wear safety goggles when heating a test tube.Take your time, don't be in a hurry. Carefully wave the test tube in and out of the flame and you will have safe heating of its contents.
