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it is used to collect evaporated air/gas in the liquid you have just heated
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What is the use of watch-glass in laboratory?
because glass is transparent
What is the function of watch glass in a laboratory?
Watch glass in a laboratory is typically used as a covering for a beaker or a petri dish to prevent contamination or evaporation of the contents. It can also be used as a simple evaporating dish or a surface for weighing small amounts of substances.
What is the function of the watch glass in taking measurement using pipette?
The watch glass may contain small amounts of solid or liquid samples.
What is the used of watch glass in the laboratory?
because glass is transparent
What is the uses of watch glass?
A watch glass is sometimes used to measure small amounts of solids and evaporate miscellaneous liquids/ chemicals in a laboratory.
Which piece of laboratory apparatus would most likely be used to evaporate a 1-milliliter sample of a solution to dryness?
Which piece of laboratory apart it would most likely be used to evaporated E1 millimeters sample of a solution to drynes
What is the function of the file in the laboratory?
A triangular file is often used to stir chemicals, as well as to scratch glass tubing before breaking it.
Use of watch glass in laboratory?
A watch glass is commonly used in a laboratory to cover beakers or evaporating dishes to prevent contamination, evaporation, or splashing during experiments. It can also be used as a weighing dish for small amounts of solid reagents or as a surface for gently heating substances over a Bunsen burner.
What is the basic purpose and function of an independent laboratory?
basic purpose and function of an independent laboratory
What are some picture laboratory apparatus and their function?
what are some picture laboratory apparatus and their function
What is the function of the graduated cylinder in the laboratory?
The function of a graduated cylinder in the laboratory is to measure volumes.
What is a watch glass used for?
A watchglass can be used as a beaker cover, but you can also place small amounts of chemicals on it and then heat it (for example, to evaporate some water from a wet chemical).From Wikipedia:A watch glass is a circular, slightly concave piece of glass used in chemistry as a surface to evaporate a liquid, or as a cover for a beaker. The latter use is generally applied to prevent dust or other particles entering the beaker; the watch glass does not completely seal the beaker, and so gas exchanges still occur. When used as an evaporation surface, a watch glass allows closer observation of precipitates or crystallisation, and can be placed on a surface of contrasting colour to improve the visibility overall. Watch glasses are so named because they are identical to the glass used for the front of old-fashioned pocket watches. In reference to this, large watch glasses are occasionally known as clock glasses.See the Related Questions and Web Links to the left for a picture of watch glass and more information about other laboratory apparatus.
