2007-01-26 00:43:49 · 6 answers · asked by mahesh b 1 in Science & Mathematics ➔ Chemistry
Yes. There is a metallic alloy of nickel and titanium that shrinks when heated (with an electric current).
(see below for article):
Additionally, it has been hypothesized that plutonium (also a metal) shrinks when heated, but I am not aware of any real-world tests that have confirmed this. (note that the hypothesis involves temperatures at a very high degree as well):
2007-01-26 01:39:55 · answer #1 · answered by shotgun_mosquito 2 · 0⤊ 0⤋
There is a metal they used to use on type keys that expanded when cooling so that the type was clear. it was an alloy of tin, lead, antimony and sometimes copper and it expanded on solidifying.
2007-01-26 02:05:41 · answer #2 · answered by science teacher 7 · 0⤊ 0⤋
It is not mercury, since mercury expands on heating, like most (all?) metals. Otherwise, mercury thermometers wouldn't work.
2007-01-26 01:24:55 · answer #3 · answered by hcbiochem 7 · 1⤊ 0⤋
I have searched and did not found any material
Only liquid water shrinks between 0 and 4°c
2007-01-26 00:57:35 · answer #4 · answered by maussy 7 · 0⤊ 1⤋
water expands in cooling and heating but not metal!
2007-01-26 00:51:07 · answer #5 · answered by kater al nada 2 · 0⤊ 1⤋
mercury
2007-01-26 00:48:51 · answer #6 · answered by paul k 2 · 0⤊ 3⤋