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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.
What is the function a test tube?
Like the function of a beaker; to hold chemicalsA test tube is another useful science equipment used in experiments. A test tube is used:-1. to carry solids or liquids in small quantity.2. to do experiments, such as knowing the nature of the substance poured in it( acidic, basic or neutral) .basically, test tube's function is to carry substances in science labs.
If a sample contained 1 gram of pure substance A and another test tube contained 4 grams of pure substance A how would the melting point differ and how would the experiment differ?
The melting point is independent of the quantity. What changes is the amount of heat which must be supplied.
Which has the greater amount -the alcohol in an uncalibrated test tube or the salt solution in a vial?
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What is the source of error when using a test tube?
A test tube (or sample tube) has no errors.
Why substance stick to the test tube?
The ability of a substance to stick on inside part of a test tube depends on its surface tension, that's why substances such as water can stick to a window. And the other reason for sticking of a substance to the test tube could be that the test tube itself is dirty, thus the dirt particles hold the substance in place.
What substance would the student expect to find if respiration occurred in the test tube?
The student would expect to find carbon dioxide in the test tube, as it is a product of cellular respiration.
Function of the test tube?
use to hold liqud or substance
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.
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 laboratory tools are used measuring liquid substance?
beaker,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
If an inverted tube containing air is placed above a test tube of hydrogen why would the tube of air give a positive test for hydrogen after a few minutes?
This would happen because of the process of diffusion. Hydrogen molecules would move from the hydrogen test tube where they are highly concentrated to the air test tube where their concentration is low.
How do you conduct the solubility test?
To conduct a solubility test, add a small amount of the substance to a test tube of solvent (such as water) and observe whether it dissolves. If it dissolves, the substance is soluble; if it does not dissolve, the substance is insoluble in that solvent. Repeat the test with different solvents to determine the solubility characteristics of the substance.
What do you use to clean the inside of a test tube?
You should use a test brush and a cleaning substance.
What are the negative views on test tube babies?
Those who disapprove of test tube babies would probably say that God intended for conception to occur in a uterus, not in a test tube.
What tablet is dropped into a test tube of urine to test glucose?
A glucose tablet is usually dropped into a test tube of urine to test for glucose. The tablet contains a substance that reacts with glucose in the urine, causing a color change that indicates the presence of glucose.
