Question

What is mercury in thermometer

Answer 1

Mercury is the thing which is a chemical.
it is used in thermometer to check the fever of a person.its readings will change when temperature is high or low.this Mercury was invented by Daniel Gabriel Fahrenheit In Amsterdam

Answer 2

Hi there!

Mercury is a chemical element. It is commonly known as quicksilver and was formerly named hydrargyrum.

¤ Symbol : Hg
¤ Atomic number : 80
¤ Melting point : -38. 83 °C

Many metals are very good conductors of heat and they are solids at room temperature.

but,
the only exception is Mercury.

Mercury is the only one in liquid state at room temperature.

● Why mercury is used in Thermometer?

Mercury has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer.

Hope it helps! :D

Cheers,
Ishaan Singh