Mercury rotates very slow. Its day equals 59 of our days. As a matter of fact, it's day is longer than its year.
It's described as unique because there's nothing else like it. Why that is, science cannot tell, it's just an observed fact. One unique thing about Mercury is its huge range of surface temperatures. Another unique thing is its (almost) total lack of an atmosphere.
no
Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.
It is toxic.
Mercury is a metal which is liquid at room temperature.
You can only see Mercury at sunrise and sunset.
Mercury is a liquid metal - a strange property.
Mercury is the only metal that is liquid at "room" temperature.
mey
It is the closest from the sun
it is very hot there