Mercury has a wide temperature range, high thermal conductivity, and a linear expansion coefficient, making it suitable for precise temperature measurements. Additionally, it does not wet the glass surface, allowing for accurate readings.
Oil will sink in water, so is the least dense.
The exterior of the bulb of the thermometer expands first, resulting in the mercury level to go down. After that the mercury in the bulb expands more than the glass bulb, resulting in the subsequent rise of the mercury level.
Yes, mercury was historically used in the glass manufacturing process to produce mirrored glass. The mercury was applied to the back of the glass to create a reflective surface. However, due to the toxic nature of mercury, this practice has been largely phased out in favor of safer alternatives.
Water isn't wet by itself, but it makes other materials wet when it sticks to the surface of them.
Mercury is a metal unlike water which have hydrogen bonding. Mercury does not wet most substances, because of its high cohesion and low adhesion to the glass mercury will not wet glass. Cohesion, along with adhesion(attraction between unlike molecules), can help explain mercury phenomena. Mercury has a surface energy over 6 times greater than that of water so there is a much greater attractive force between the atoms of mercury than between the molecules of water, so mercury does not wet glass.
The "wetting" that happens when an object is immersed in a liquid depends on the surface energy of the object and the capilary forces in action on the surface of the liquid. for example mercury will not "wet" glass but water can wet the same glass.
Mercury: Due to its high surface tension, mercury does not wet glass and forms droplets on its surface. Carbon tetrachloride: This liquid has low surface tension, which causes it to bead up on glass rather than spread out. Liquid bromine: Like mercury, liquid bromine does not wet glass due to its high surface tension property.
It doesn't wet surfaces. It doesn't stick to glass.
Is a very heavy liquid and doesn't wet glass
Mercury does not wet glass due to one of it's most significant properties. Mercury will not cling to the glass that contains it.
Glass floats in mercury because mercury is much denser than glass, creating a buoyant force that allows the glass to float. In contrast, water is less dense than glass, causing the glass to sink due to its higher density. The buoyant force in water is not enough to support the heavier glass object.
As mercury has a low specific heat yet is a good conductor of heat it has been the choice for thermometers. The ease of reading is due to the fact that the mercury does not wet the walls of the glass.
Glass
Wet thermal insulation.
Cohesion is the tendency of molecules to be attracted to similar molecules. Adhesion is the tendency of molecules to be attracted to dissimilar molecules.Water is both cohesive and adhesive, as is ethanol alcohol. The cohesiveness of water can be demonstrated by filling a cup with water and placing a wet clothe over the top of the cup, then flipping the cup upside down. The water will not entirely spill out of the cup.Mercury is cohesive, but not adhesive, so two drops of mercury will absorb one another, but dipping a clothe in mercury will not absorb it.The phenomenon of cohesion and adhesion can be understood by looking at the molecular structure and charge distribution of a molecule.
the paper will become wet and will tear.