You could, but its range would be limited. Not only does it freeze at 0oC and boil at 100oC, water reaches its greatest density at 4oC, below which it starts to expand again, so the bottom end of the scale would be useless.
Liquids used for thermometers include:
* Mercury, freezes at -38oC, boils at 630oC; * Ethanol, freezes at -114oC, boils at 78oC; * Toluene, freezes at -92oC, boils at 110oC; * Isomyl acetate, freezes at -78oC, boils at 142oC. Kerosene can also be used, but its exact freezing and boiling points depend very much on the grade.
So, to fully answer the question, water is probably not desirable in a thermometer.
Which thermometer is most suitable for measuring boiling point of water mercury or alcoholic thermometer
i think you mean a mercury theremometer
The mercury level in a thermometer placed in a hot tub of water will rise as the temperature of the water increases. This is because the volume of liquid mercury expands with higher temperatures, causing it to climb up the measuring scale in the thermometer.
If it's a silver liquid it's mercury, if it's red it's alcohol (not water)
A mercury thermometer (but not a medical one!)
The question must be asked carefully. If the thermometer is in water ice and there is no liquid water, and there is one atmosphere of pressure, the thermometer can read anything from the freezing point of water and lower, depending on the range of the thermometer. If the thermometer is in a stable mix of water and ice, it will read the freezing point of water.
Water freezes at too high a temperature.
To verify the ice point of a mercury thermometer, place the thermometer in a mixture of crushed ice and water, stirring gently. Allow the thermometer to stabilize for a few minutes, ensuring the mercury column remains constant. The temperature indicated by the thermometer should match the expected ice point of 0°C (32°F).
When placed in boiling water, the materials comprising the thermometer respond in the order in which the heat penetrates them. As the heat first permeates the glass cylinder, the cylinder expands, enlarging the bore. For the moment until the mercury is also heated, the constant volume of mercury fills the expanded bore to a slightly lower depth. When the heat reaches the mercury and it also expands, its volume to increase, and the liquid depth rises in the bore.
When a thermometer bulb containing mercury is placed in hot water, the mercury inside expands, causing the level of mercury to rise. This expansion of mercury is used to measure the increase in temperature accurately.
Water does not change as much in volume with temperature as much as Mercury does, which makes it more difficult to read temperature Changes on a scale.
The Fahrenheit temperature scale was created using ice water, sea salt, and a mercury thermometer by Daniel Gabriel Fahrenheit in the early 18th century.