Which metal is used in thermometer except mercury?

Silver. Hint: Thermometer is used to measure the temperatures. So the substance used in the thermometer must have a high coefficient of thermal expansion, it should be sensitive to small temperature change.

What is used in thermometers?

In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.

Why is mercury used in a thermometer instead of water or alcohol?

Mercury is the only one in liquid state at room temperature. It’s used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it’s used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.

Is silver used in thermometer?

Mercury is liquid at room temperature and it is also sensitive to temperature so it is used in thermometer.

Which glass is used for thermometer?

The mercury-in-glass or mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam (1714). It consists of a bulb containing mercury attached to a glass tube of narrow diameter; the volume of mercury in the tube is much less than the volume in the bulb.

Why is water not used instead of mercury in thermometer?

Water cannot be used in thermometer because of its higher freezing point and lower boiling point than other liquids . If water is used in a thermometer , it will start phase change at 0oC and 100oC and will not measure temperature , out of this range .

Why is ethanol used in thermometers?

Ethanol has low freezing point. Hence, it is used in thermometers.

Why alcohol is not used in thermometers?

It is less durable because alcohol evaporates faster than mercury. It cannot measure high temperature because of a low boiling point. It wets the walls of the thermometer, which can adversely impact the accuracy of readings.

Is gold used in thermometer?

Mercury is used in thermometer.

Why is glass used in thermometers?

Glass has a very low coefficient of thermal expansion. This is the reason why thermometer bulb or for a matter of fact entire thermometer is made up of glass. Due to low coefficient of thermal expansion, when the thermometer undergoes a large temperature change it will have minimal change in dimensions.

What is red liquid in thermometer?

If your thermometer is filled with a red liquid, your thermometer contains red dyed alcohol or mineral spirits and not mercury. These are safer alternatives to mercury fever thermometers.