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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.
What is the overall structure of the DNA molecule?
The physical structure is called a double-helix.
What is a chemical change to glass?
The ordinary glass is the silicates of sodium ad calcium with excess amount of silica. Na2SiO3.CaSiO3.4SiO2 The basic components of glass are soda lime and sand it means Na2CO3 , CaCO3 and SiO2 the basic reactions for formation of glass are, Na2CO3 + SiO2 = Na2SiO3 + CO2 CaCO3 + SiO2 = CaSiO3 + CO2 Na2SiO3 + CaSiO3 + 4SiO2 ==1400 celsius== Na2SiO3.CaSiO3.4SiO2 Potash glass cotains potassium instead of sodium. pyrex glass is Na2SiO3.CaSiO3.B2(SiO3)3.SiO2
How does glass get recycled?
* recycled bottles are taken to recycling center * non-recyclables are removed by hand * different colored bottles are separated * bottles are cleaned * filtered (to remove bottle tops etc) * the cullet is melted in blast furnace * new bottles are made Crushed recycled glass is called "cullet" Making glass from recycled bottles uses only 40% of the energy of making them from raw materials (sand, limestone and soda ash) New glass products have up to 80% recycled content. Glass can be recycled infinitely over and over again! Contaminants: * ceramic (cups, plates, china, crockery) * drinking glasses * oven-proof glass all contaminate the recycled glass. As little as 5 grams (0.2 oz) per tonne can cause a weak spot in the glass which could explode when filled with liquid.See the related links below.
What are Nikola Tesla rewards?
I posted 2 links in the related links box below for you to see. The information is there.
What is crown glass?
Crown glass is a type of glass used in lenses. For more information, see Related links below this box.
What CSS properties can be used to style links?
Many CSS properties can be used to style links. For example, color, font and background can be styled. There are many guides, such as 'w3schools' for advice on this.
What are the physical and chemical properties of ethylene?
See links below
What do glass plants do?
Glass manufacturing plants manufacture glass. It comes in the forms of the sheets and plates we are used to, but they also make all the glass containers and cookware we have. Use the links below to learn about glass and glass making.
The Glass Menagerie plus full text?
See the links below.
Carbon chains can form branches and cross-links?
Carbon chains can indeed form branches when additional carbon atoms are attached to the main chain. Cross-links occur when the branches of different carbon chains are connected, creating a network structure. These branchings and cross-links can greatly influence the physical and chemical properties of the resulting compound.
How are monomers similar to links in a chain?
Monomers are similar to links in a chain in that they are individual units that can be linked together to form a larger structure. Just as links in a chain can be connected in various ways to create different patterns, monomers can be combined in different sequences to form a variety of polymers with unique properties. Additionally, both monomers and links in a chain are essential for building larger, more complex structures.
What is the chemical structure of cocoa oil of?
See the links below.
How do you drink drambuie?
Straight in a glass. See also the related links below.
What is the study of properties of matterand how matter changes?
Visit all links below
What is the meaning of unintentionally broken a glass?
If someone has 'unintentionally broken a glass' it was an accident, they did not intend to break it. They did did not break the glass deliberately or on purpose.See Sources and Related links below for more information.
What is the organisational structure for Bank of Ireland?
See the related links below.
