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Mercury expands when heated.
The majority of the mercury is contained in the bulb at the bottom and the expansion forces it to move upwards into the narrow column where the temperature scale is located. The expansion is very linear with temperature which makes it possible to relate the distance moved up the tube with the change in temperature.
Almost every material known to mankind expands when heated. Mercury and a few other liquids exist in a temperature range that is convenient for use in thermometers. (Mercury has a freezing point of −39 °C and boiling point of 357 °C.)
Mercury has the advantage of being visible, i.e. not transparent, but other liquids are sometimes colored with dye for use in a thermometer. Mercury will not deteriorate over time as happens with some dyed liquids.
Being a pure material, its physical properties are unambiguous and so amenable to standardization.
Unfortunately, Mercury has some toxic qualities that require can in its use.
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∙ 11y ago
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Where is most of the liquid in a thermometer?
At the bottom if it's really cold and all over if it's really hot.
What happens to roadrunners when it gets to hot?
they get icepops
Can asbestos be turn into a liquid?
Asbestos can melt, if it gets hot enough.
Why does the liquid in the thermometer go up and down when the weather changes?
the liquid in the thermometer rises because of the surrounding heat which causes a chemical reaction wihtin the substance which makes the liquid rises. When, the liquid sinks, itn is because the air has gotten cooler
What measures how cold or hot something is?
a Thermometer.
Why does a thermometer rise up when its hot?
Usually when a thing gets hot, it expands. The liquid in the thermometer gets hot, and expands, so it takes up more room in the tube.
What happens when a cold thermometer is kept in a hot tub of water?
the termometre gets warmer
What happens to a liquid when is it is heated up?
First the liquid gets hot, then it boils becoming a gas.
What happens if chocolate gets wet?
when chcolate gets wet it may start to melt if the liquid is hot or it may become slimy.
What happens when liquid gets into an electric stove burner?
obviously you'll get burned if you touch the stove while its hot.
What happens when a Bunsen gauze gets hot?
.it gets hot and if you tuch it it will burn you what happens is it steams
What changes takes place in the liquid inside a thermometer when the thermometer is placed into something hot?
The liquid in thermometers expands when temperature increases (and contracts when temperature decreases). When it expands, the only place for it to expand 'to' is up the thermometer (into the empty space above it).
What change takes place in the liquid inside a thermometer when the thermometer is placed into something cold?
The liquid in thermometers contracts when placed in something cold (and expands when placed in something hot.)
Uses of a thermometer?
to take temperature of a cold or hot liquid usually used to take a fever
Where is most of the liquid in a thermometer?
At the bottom if it's really cold and all over if it's really hot.
What is the process by which a thermometer works?
There is mercury the thermometer. (well, some thermometers..) when mercury gets hot it expands because mercury is a metal. I'm pretty sure.
What happens when cotton gets hot?
It explodes
