2007-01-29 21:36:21 · 9 answers · asked by adriankwokdk 1 in Cars & Transportation ➔ Car Makes ➔ Mercury
1.Does not wet the sides of glass
2.Uniform change of volume with temperature
3.Bright silver colour
2007-01-29 21:50:47 · answer #1 · answered by karikalan 7 · 0⤊ 1⤋
Mercury (Hg) is used in some thermometers because it is 13 times heavier than water. Mercury is classified as a metal. Most fluid thermometers have a very thin vein of fluid that expands with heat or contracts with cold. A Mercury thermometer needs to be at least one meter long and capable of supporting the weight of a column of Mercury in a sealed glass tube, above which a perfect vacuum exists. When the column of Mercury is warmed, it expands and fills some of the vacuum space above the column. A thermometer using H2O (water) as a temperature indicator would need to be about 40 feet tall.
2007-01-29 21:54:09 · answer #2 · answered by Phillip S 6 · 0⤊ 1⤋
Mercury is used in glass thermometers because mercury is sensitive to changes in temperature. It can take extreme temperatures. A mercury thermometer can be easily identified by the presence of silver liquid. The silver liquid helps make reading the temperature easy
2007-01-29 22:00:04 · answer #3 · answered by infernos_heart 2 · 0⤊ 2⤋
Mercury is better than alcohol in thermometers where higher temperatures are required. Alcohol is no good over about 110C while mercury can do over 300C. However, there are digital thermometers you can use instead.
2007-01-29 21:47:11 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Is because Mercury are very sensitive to temperature and this kind of liquid doesn't stick to the wall. So, both of them above got the answer for you.
PEACE~
2007-01-29 21:49:41 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Mercury is used in thermometers because it expands and contracts evenly with temperature changes.
2007-01-29 21:42:03 · answer #6 · answered by Sled Queen 3 · 0⤊ 1⤋
It expands and contracts greatly with temperature. Moreover, it's boiling point is so high that helps you to very high temperatures.
2007-01-29 21:43:53 · answer #7 · answered by jaggie_c 4 · 0⤊ 1⤋
Because you cant fit Uranus in the thermometer...LOL
2007-01-30 01:47:41 · answer #8 · answered by exidement99 2 · 0⤊ 1⤋
Why ask this in the car section???
2007-02-02 19:33:58 · answer #9 · answered by Hello Kitty 3 · 0⤊ 0⤋