The red liquid inside of a thermometer is alcohol. When the temperature changes, the alcohol expands, providing a reading based on the thermometer's scale. Red dye is used to color the clear alcohol so that someone is able to easily read the thermometer.Know More
Alcohol thermometers are considered much safer than the once popular mercury thermometers, but they are considered slightly less durable because the alcohol evaporates from the thermometer over time.
The mercury in mercury thermometers is poisonous if the thermometer breaks. Old thermometers must be properly disposed of to prevent environmental contamination. The Environmental Protection Agency (EPA) recommends that the use of mercury thermometers be avoided and that existing mercury thermometers be properly retired.Learn more about Chemistry
The law of floatation states that when a body is wholly or partially immersed in a liquid, it floats if the weight of the liquid displaced is equal to the weight of the body. If the weight of the liquid displaced is more than the weight of the body, it sinks.Full Answer >
In paper chromatography, a test sample is dotted onto a piece of paper, placed in a liquid that mobilizes its components separately and inspected to determine the component's final positions. Depending on the type of liquid used, the underlying mechanism for paper chromatography may involve the test sample's preference for dissolving in the solvent or the thin layer of water bound to the cellulose fibers in the paper.Full Answer >
Nitrogen is a liquid when it is cooled to a temperature between minus 346 degrees Fahrenheit and minus 320.44 degrees Fahrenheit. Liquid nitrogen resembles water when it boils, but when it is colder than minus 346 degrees, it turns into a solid.Full Answer >
According to the Scottish Environmental Protection Agency, pentane is an organic liquid used as an ingredient for petrol fuel and as a solvent. This chemical has some pollutant properties, but it is widely used in industrial and scientific settings.Full Answer >